Swift's Gamma Ray Burst Detections: earlier bursts in 2008
- May 24, 2008 GRB080524
TITLE: GCN CIRCULAR
NUMBER: 7774
SUBJECT: GRB 080524: Swift-BAT detection of a burst in ground analysis
DATE: 08/05/25 19:41:39 GMT
FROM: Jay R. Cummings at NASA/GSFC/Swift
G. Sato (GSFC/ISAS), L. Barbier (GSFC), S. Barthelmy (GSFC),
W. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),
E. Fenimore (LANL), N. Gehrels (GSFC), D. Grupe (PSU),
D. Hullinger (BYU-Idaho), H. Krimm (GSFC/USRA), M. Koss (GSFC/UMD),
C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC),
T. Sakamoto (GSFC/ORAU), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC),
on behalf of the Swift-BAT team:
At 04:13:00 UT on May 24, 2008, BAT triggered on GRB 080524. The onboard
processing found a source that was not significant enough to initiate a
burst response. Routine processing on the ground of failed triggers found
a significant source (9.7 sigma) at RA, Dec 268.449, +80.143 which is:
RA 17h 53m 47.7s (J2000)
Dec 80d 8m 35s (J2000)
with an uncertainty radius of 2.5 arcmin (90% containment). The source
was 58% coded.
- + Read more
- May 23, 2008 GRB080523
TITLE: GCN CIRCULAR
NUMBER: 7767
SUBJECT: GRB 080523: Swift detection of a burst
DATE: 08/05/23 21:34:28 GMT
FROM: David Palmer at LANL
M. C. Stroh (PSU), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester),
C. Gronwall (PSU), D. Grupe (PSU), S. T. Holland (CRESST/USRA/GSFC),
H. A. Krimm (CRESST/GSFC/USRA), V. Mangano (INAF-IASFPA),
P. T. O'Brien (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), J. L. Racusin (PSU),
M. Stamatikos (NASA/ORAU), T. N. Ukwatta (GSFC/GWU) and
D. E. Vanden Berk (PSU) report on behalf of the Swift Team:
At 21:21:51 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080523 (trigger=312242). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 20.732, -64.053 which is
RA(J2000) = 01h 22m 56s
Dec(J2000) = -64d 03' 12"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows a single peak
with a duration of about 15 sec. The peak count rate
was ~700 counts/sec (15-350 keV), at ~5 sec after the trigger.
- + Read more
- May 20, 2008 GRB080520
TITLE: GCN CIRCULAR
NUMBER: 7753
SUBJECT: GRB 080520: Swift detection of a burst with optical afterglow
DATE: 08/05/20 22:49:07 GMT
FROM: David Palmer at LANL
D. Grupe (PSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),
A. P. Beardmore (U Leicester), J. R. Cummings (NASA/UMBC),
C. Gronwall (PSU), S. T. Holland (CRESST/USRA/GSFC),
J. A. Kennea (PSU), V. Mangano (INAF-IASFPA),
K. M. McLean (GSFC/UMD), J. P. Osborne (U Leicester),
D. M. Palmer (LANL), D. Perez (U Leicester), T. Sakamoto (NASA/UMBC),
M. Stamatikos (NASA/ORAU), M. C. Stroh (PSU) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 22:20:24 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080520 (trigger=312047). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 280.192, -55.004 which is
RA(J2000) = 18h 40m 46s
Dec(J2000) = -55d 00' 13"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows two peaks
with a duration of about 15 sec. The peak count rate
was ~700 counts/sec (15-350 keV), at ~2 sec after the trigger.
- + Read more
- May 17, 2008 GRB080517
TITLE: GCN CIRCULAR
NUMBER: 7742
SUBJECT: GRB 080517: Swift detection of a burst
DATE: 08/05/17 21:51:51 GMT
FROM: David Burrows at PSU/Swift
A. M. Parsons (GSFC), A. P. Beardmore (U Leicester),
D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC),
P. T. O'Brien (U Leicester), K. L. Page (U Leicester),
D. M. Palmer (LANL) and E. Troja (U Leicester/INAF-IASFPA) report on
behalf of the Swift Team:
At 21:22:51 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080517 (trigger=311874). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 102.255, +50.731 which is
RA(J2000) = 06h 49m 01s
Dec(J2000) = +50d 43' 51"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single-peaked
structure with a duration of about 20 sec. The peak count rate
was ~500 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- May 16, 2008 GRB080516
TITLE: GCN CIRCULAR
NUMBER: 7733
SUBJECT: GRB 080516: Swift detection of a burst
DATE: 08/05/16 00:47:29 GMT
FROM: David Burrows at PSU/Swift
S. T. Holland (CRESST/USRA/GSFC), S. D. Barthelmy (GSFC),
D. N. Burrows (PSU), E. A. Hoversten (PSU), J. A. Kennea (PSU),
H. A. Krimm (CRESST/GSFC/USRA), F. E. Marshall (NASA/GSFC),
K. L. Page (U Leicester), D. M. Palmer (LANL),
M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester) and
E. Troja (U Leicester/INAF-IASFPA) report on behalf of the Swift
Team:
At 00:17:07 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080516 (trigger=311762). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 120.629, -26.176 which is
RA(J2000) = 08h 02m 31s
Dec(J2000) = -26d 10' 33"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a multi-peaked
structure with a duration of about 20 sec. The peak count rate
was ~2500 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- May 15, 2008 GRB080515
TITLE: GCN CIRCULAR
NUMBER: 7721
SUBJECT: GRB 080515: Swift detection of a burst
DATE: 08/05/15 06:19:28 GMT
FROM: David Palmer at LANL
S. T. Holland (CRESST/USRA/GSFC), A. P. Beardmore (U Leicester),
P. A. Evans (U Leicester), E. A. Hoversten (PSU),
H. A. Krimm (CRESST/GSFC/USRA), C. B. Markwardt (CRESST/GSFC/UMD),
P. T. O'Brien (U Leicester), K. L. Page (U Leicester),
D. M. Palmer (LANL) and R. L. C. Starling (U Leicester) report on
behalf of the Swift Team:
At 06:01:13 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080515 (trigger=311658). Swift could not slew to the burst
due to Sun constraint. The BAT on-board calculated location is
RA, Dec 3.150, +32.599 which is
RA(J2000) = 00h 12m 36s
Dec(J2000) = +32d 35' 57"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve from TDRSS was
truncated by the beginning of a Malindi downlink and
is further complicated as we were coming out of the SAA at the time, but
shows activity from the trigger time to the end of available data
at T+8s, with a peak count rate of ~500 counts/s (15-350 keV).
- + Read more
- May 6, 2008 GRB080506
TITLE: GCN CIRCULAR
NUMBER: 7685
SUBJECT: GRB 080506: Swift detection of a burst with optical afterglow
DATE: 08/05/06 18:06:27 GMT
FROM: Wayne Baumgartner at GSFC
W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU),
M. M. Chester (PSU), G. Cusumano (INAF-IASFPA),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
C. Guidorzi (INAF-OAB), S. T. Holland (CRESST/USRA/GSFC),
S. Immler (CRESST/GSFC/UMD), J. A. Kennea (PSU),
V. La Parola (INAF-IASFPA), V. Mangano (INAF-IASFPA),
F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester),
C. Pagani (PSU), P. Romano (INAF-IASFPA), T. Sakamoto (NASA/UMBC),
M. Stamatikos (NASA/ORAU), T. N. Ukwatta (GSFC/GWU) and
H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 17:46:21 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080506 (trigger=311159). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 329.435, +39.002 which is
RA(J2000) = 21h 57m 44s
Dec(J2000) = +39d 00' 08"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). As this is an image trigger, the BAT light curve does
not show meaningful emission from the burst.
- + Read more
- May 3, 2008 GRB080503
TITLE: GCN CIRCULAR
NUMBER: 7665
SUBJECT: GRB 080503: Swift detection of a short burst
DATE: 08/05/03 12:50:13 GMT
FROM: David Burrows at PSU/Swift
J. Mao (INAF-OAB), W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU),
M. M. Chester (PSU), N. Gehrels (NASA/GSFC), C. Guidorzi (INAF-OAB),
S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC),
P. T. O'Brien (U Leicester), D. M. Palmer (LANL),
P. Romano (INAF-IASFPA), T. N. Ukwatta (GSFC/GWU) and
D. E. Vanden Berk (PSU) report on behalf of the Swift Team:
At 12:26:13 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080503 (trigger=310785). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 286.617, +68.778 which is
RA(J2000) = 19h 06m 28s
Dec(J2000) = +68d 46' 41"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single spike
structure with a duration of about 0.5 sec, although there may
be further activity during the slew. The peak count rate
was ~6500 counts/sec (15-350 keV), at ~0.1 sec after the trigger.
- + Read more
- April 30, 2008 GRB080430
TITLE: GCN CIRCULAR
NUMBER: 7647
SUBJECT: GRB 080430: Swift detection of a burst with optical afterglow
DATE: 08/04/30 20:16:10 GMT
FROM: Scott Barthelmy at NASA/GSFC
C. Guidorzi (INAF-OAB), S. D. Barthelmy (GSFC),
A. P. Beardmore (U Leicester), D. N. Burrows (PSU),
J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC),
O. Godet (U Leicester), S. T. Holland (CRESST/USRA/GSFC),
J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA),
W.L Landsman (GSFC), C. B. Markwardt (CRESST/GSFC/UMD),
K. M. McLean (GSFC/UMD), P. T. O'Brien (U Leicester),
D. M. Palmer (LANL), D. Perez (U Leicester), P. Romano (INAF-IASFPA),
T. Sakamoto (NASA/UMBC), M. Stamatikos (NASA/ORAU),
R. L. C. Starling (U Leicester), G. Tagliaferri (INAF-OAB),
T. N. Ukwatta (GSFC/GWU), D. E. Vanden Berk (PSU) and
H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 19:53:02 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080430 (trigger=310613). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 165.322, +51.689 which is
RA(J2000) = 11h 01m 17s
Dec(J2000) = +51d 41' 22"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single FRED peak
structure with a duration of about 20 sec. The peak count rate
was ~6000 counts/sec (15-350 keV), at ~1 sec after the trigger.
- + Read more
- April 26, 2008 GRB080426
TITLE: GCN CIRCULAR
NUMBER: 7639
SUBJECT: GRB 080426: Swift detection of a possibly short burst
DATE: 08/04/26 13:49:12 GMT
FROM: David Burrows at PSU/Swift
H. Ziaeepour (UCL-MSSL), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester),
D. N. Burrows (PSU), N. Gehrels (NASA/GSFC), C. Guidorzi (INAF-OAB),
S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU),
N. P. M. Kuin (MSSL), J. Mao (INAF-OAB),
C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC),
P. T. O'Brien (U Leicester), S. R. Oates (UCL-MSSL), C. Pagani (PSU),
D. M. Palmer (LANL), D. Perez (U Leicester),
R. L. C. Starling (U Leicester), G. Tagliaferri (INAF-OAB),
T. N. Ukwatta (GSFC/GWU) and P. A. Ward (MSSL-UCL) report on behalf
of the Swift Team:
At 13:23:22 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080426 (trigger=310219). Swift slewed to the burst
after a brief delay due to Earth limb constraint.
The BAT on-board calculated location is
RA, Dec 26.574, +69.492 which is
RA(J2000) = 01h 46m 18s
Dec(J2000) = +69d 29' 30"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single-peaked
structure with a duration of about 2 sec. The peak count rate
was ~7500 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- April 13, 2008 GRB080413b
TITLE: GCN CIRCULAR
NUMBER: 7598
SUBJECT: GRB 080413B: Swift detection of a possibly short burst with optical counterpart
DATE: 08/04/13 09:20:28 GMT
FROM: David Palmer at LANL
M. Stamatikos (NASA/ORAU), A. P. Beardmore (U Leicester),
N. Gehrels (NASA/GSFC), S. D. Hunsberger (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), J. P. Osborne (U Leicester),
K. L. Page (U Leicester), D. M. Palmer (LANL),
T. Sakamoto (NASA/UMBC), R. L. C. Starling (U Leicester) and
E. Troja (U Leicester/INAF-IASFPA) report on behalf of the Swift
Team:
At 08:51:12 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080413B (trigger=309111). Swift started slewing approximately
70 seconds after the burst. The BAT on-board calculated location is
RA, Dec 326.134, -19.969 which is
RA(J2000) = 21h 44m 32s
Dec(J2000) = -19d 58' 08"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single peaked
structure with a duration of about 3 sec. The peak count rate
was ~15,000 counts/sec (15-350 keV), at ~0.2 sec after the trigger.
- + Read more
- April 13, 2008 GRB080413a
TITLE: GCN CIRCULAR
NUMBER: 7594
SUBJECT: GRB 080413: Swift detection of a burst with an optical afterglow
DATE: 08/04/13 03:06:53 GMT
FROM: David Palmer at LANL
A. P. Beardmore (U Leicester), D. N. Burrows (PSU),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
S. T. Holland (CRESST/USRA/GSFC), S. D. Hunsberger (PSU),
J. A. Kennea (PSU), C. B. Markwardt (CRESST/GSFC/UMD),
K. L. Page (U Leicester), D. M. Palmer (LANL),
T. Sakamoto (NASA/UMBC), M. Stamatikos (NASA/ORAU) and
E. Troja (U Leicester/INAF-IASFPA) report on behalf of the Swift
Team:
At 02:54:19 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080413 (trigger=309096). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 287.290, -27.679 which is
RA(J2000) = 19h 09m 10s
Dec(J2000) = -27d 40' 44"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a triple-peaked
structure with a duration of about 55 sec. The peak count rate
was ~10000 counts/sec (15-350 keV), at ~1 sec after the trigger.
- + Read more
- April 11, 2008 GRB080411
TITLE: GCN CIRCULAR
NUMBER: 7584
SUBJECT: GRB 080411: Swift detection of a bright burst
DATE: 08/04/11 21:47:27 GMT
FROM: Scott Barthelmy at NASA/GSFC
F. E. Marshall (NASA/GSFC), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester),
D. N. Burrows (PSU), N. Gehrels (NASA/GSFC), O. Godet (U Leicester),
S. T. Holland (CRESST/USRA/GSFC), H. A. Krimm (CRESST/GSFC/USRA),
C. B. Markwardt (CRESST/GSFC/UMD), K. M. McLean (GSFC/UMD),
C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL),
M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester),
T. N. Ukwatta (GSFC/GWU), L. Vetere (PSU) and P. A. Ward (MSSL-UCL)
report on behalf of the Swift Team:
At 21:15:32 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080411 (trigger=309010). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 38.018, -71.342 which is
RA(J2000) = 02h 32m 04s
Dec(J2000) = -71d 20' 30"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The TDRSS BAT lightcurve shows the burst
starting with a fast rise from background to ~13,000 counts/sec in
approximately 0.5 sec. There are several peaks after that with the
fourth peak (T+19 sec) at 75,000 cnts/sec. There are several more peaks
after that lasting out to at least T+70 sec.
- + Read more
- April 9, 2008 GRB080409
TITLE: GCN CIRCULAR
NUMBER: 7573
SUBJECT: GRB 080409: Swift detection of a burst
DATE: 08/04/09 01:46:36 GMT
FROM: David Palmer at LANL
S. T. Holland (CRESST/USRA/GSFC), W. H. Baumgartner (GSFC/UMBC),
D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), J. A. Kennea (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC),
K. M. McLean (GSFC/UMD), K. L. Page (U Leicester),
D. M. Palmer (LANL), R. L. C. Starling (U Leicester) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 01:22:57 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080409 (trigger=308812). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 84.333, +5.085 which is
RA(J2000) = 05h 37m 20s
Dec(J2000) = +05d 05' 07"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a double-peaked
structure with a duration of about 10 sec. The peak count rate
was ~5000 counts/sec (15-350 keV), at ~0.7 sec after the trigger.
- + Read more
- April 5, 2008 GRB080405
TITLE: GCN CIRCULAR
NUMBER: 7566
SUBJECT: GRB 080405: Swift-BAT refined analysis
DATE: 08/04/07 14:25:11 GMT
FROM: Jay R. Cummings at NASA/GSFC/Swift
T. Sakamoto (GSFC/ORAU), L. Barbier (GSFC), S. Barthelmy (GSFC),
J. Cummings (GSFC/UMBC), M. Stamatikos (GSFC/ORAU), T. Ukwatta (GWU),
K. McLean (GSFC/UMD), W. Baumgartner (GSFC/UMBC), E. Fenimore (LANL),
H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL),
G. Sato (GSFC/ISAS), J. Tueller (GSFC)
(i. e. the Swift-BAT team)
We report further results on GRB 080405 (Cummings et al. GCN circ
#7564) based on the BAT event data from T-1.3 to T+8.7 seconds.
This interval covers only about the first fifth of the event, and
not the interval of peak flux.
The best BAT position remains the same: RA, Dec 162.597, -4.250 deg
which is:
RA(J2000) = 10h 50m 23.3s,
Dec(J2000) = -4d 15' 00" (J2000)
with an uncertainty of 2.0 arcmin (radius, sys+stat, 90% containment).
- + Read more
- Older Bursts
- March 30, 2008 GRB080330
TITLE: GCN CIRCULAR
NUMBER: 7537
SUBJECT: GRB 080330: Swift detection of a burst with an optical counterpart
DATE: 08/03/30 04:02:22 GMT
FROM: David Palmer at LANL
J. Mao (INAF-OAB), W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU),
N. Gehrels (NASA/GSFC), S. T. Holland (CRESST/USRA/GSFC),
J. A. Kennea (PSU), K. M. McLean (GSFC/UMD), D. M. Palmer (LANL),
A. M. Parsons (GSFC), M. Stamatikos (NASA/ORAU),
R. L. C. Starling (U Leicester), T. N. Ukwatta (GSFC/GWU) and
D. E. Vanden Berk (PSU) report on behalf of the Swift Team:
At 03:41:16 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080330 (trigger=308041). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 169.302, +30.570 which is
RA(J2000) = 11h 17m 12s
Dec(J2000) = +30d 34' 13"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a multiple-peak
structure with a duration of about 60 sec. The peak count rate
was ~1500 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- March 28, 2008 GRB080328
TITLE: GCN CIRCULAR
NUMBER: 7525
SUBJECT: GRB 080328: Swift detection of a burst with an optical counterpart
DATE: 08/03/28 08:28:44 GMT
FROM: David Palmer at LANL
M. Perri (ASDC), D. N. Burrows (PSU), S. Campana (INAF-OAB),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
C. Guidorzi (INAF-OAB), C. B. Markwardt (CRESST/GSFC/UMD),
K. L. Page (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), P. Romano (INAF-IASFPA),
R. L. C. Starling (U Leicester), G. Stratta (ASDC),
D. E. Vanden Berk (PSU), P. A. Ward (MSSL-UCL) and
H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 08:03:04 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080328 (trigger=307931). Swift slewed immediately to the
burst. The BAT on-board calculated location is
RA, Dec 80.479, +47.524 which is
RA(J2000) = 05h 21m 55s
Dec(J2000) = +47d 31' 26"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a multi-peaked
structure with a duration of about 110 sec. The peak count rate
was ~9500 counts/sec (15-350 keV), at ~10 sec after the trigger.
- + Read more
- March 25, 2008 GRB080325
TITLE: GCN CIRCULAR
NUMBER: 7512
SUBJECT: GRB 080325: Swift detection of a burst
DATE: 08/03/25 04:25:22 GMT
FROM: David Palmer at LANL
L. Vetere (PSU), P. J. Brown (PSU), D. Grupe (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), C. Pagani (PSU),
D. M. Palmer (LANL), J. L. Racusin (PSU), M. C. Stroh (PSU) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 04:09:17 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080325 (trigger=307604). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 277.895, +36.511 which is
RA(J2000) = 18h 31m 35s
Dec(J2000) = +36d 30' 38"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). Because this is a 64-sec long image trigger, the
TDRSS lightcurve does not show any significant signal (as is typical).
- + Read more
- March 20, 2008 GRB080320
TITLE: GCN CIRCULAR
NUMBER: 7473
SUBJECT: GRB 080320: Swift detection of a burst
DATE: 08/03/20 05:08:16 GMT
FROM: David Burrows at PSU/Swift
D. Grupe (PSU), D. N. Burrows (PSU), M. M. Chester (PSU),
N. Gehrels (NASA/GSFC), S. Immler (CRESST/GSFC/UMD),
J. A. Kennea (PSU), C. B. Markwardt (CRESST/GSFC/UMD),
D. M. Palmer (LANL), A. M. Parsons (GSFC), J. L. Racusin (PSU),
M. Stamatikos (NASA/ORAU), T. N. Ukwatta (GSFC/GWU),
D. E. Vanden Berk (PSU) and L. Vetere (PSU) report on behalf of the
Swift Team:
At 04:37:38 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080320 (trigger=306858). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 177.780, +57.144 which is
RA(J2000) = 11h 51m 07s
Dec(J2000) = +57d 08' 38"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a FRED
structure with a duration of about 25 sec. The peak count rate
was ~1200 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- March 19, 2008 GRB080319d
TITLE: GCN CIRCULAR
NUMBER: 7453
SUBJECT: GRB 080319D: Swift detection of a burst with a possible optical afterglow
DATE: 08/03/19 17:42:09 GMT
FROM: Scott Barthelmy at NASA/GSFC
P. J. Brown (PSU), S. D. Barthelmy (GSFC), D. N. Burrows (PSU),
M. M. Chester (PSU), N. Gehrels (NASA/GSFC), O. Godet (U Leicester),
S. T. Holland (CRESST/USRA/GSFC), S. Immler (CRESST/GSFC/UMD),
J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA),
P. T. O'Brien (U Leicester), J. P. Osborne (U Leicester),
C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL),
M. Perri (ASDC), J. L. Racusin (PSU), M. Stamatikos (NASA/ORAU),
R. L. C. Starling (U Leicester), E. Troja (U Leicester/INAF-IASFPA)
and T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 17:05:09 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080319D (trigger=306793). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 99.480, +23.933 which is
RA(J2000) = 06h 37m 55s
Dec(J2000) = +23d 56' 01"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). As is usual with an image trigger, the prompt light
curve does not not show any clear structure. We will be able to tell more with
the full data set.
- + Read more
- March 19, 2008 GRB080319c
TITLE: GCN CIRCULAR
NUMBER: 7442
SUBJECT: GRB 080319C: Swift detection of a burst with an optical afterglow
DATE: 08/03/19 12:45:58 GMT
FROM: Scott Barthelmy at NASA/GSFC
C. Pagani (PSU), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester),
D. N. Burrows (PSU), P. A. Evans (U Leicester),
N. Gehrels (NASA/GSFC), O. Godet (U Leicester),
S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU),
V. Mangano (INAF-IASFPA), J. P. Osborne (U Leicester),
K. L. Page (U Leicester), A. M. Parsons (GSFC), J. L. Racusin (PSU),
B. Sbarufatti (INAF-IASFPA), M. Stamatikos (NASA/ORAU),
R. L. C. Starling (U Leicester), G. Stratta (ASDC) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 12:25:56 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080319C (trigger=306778). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 258.973, +55.410 which is
RA(J2000) = 17h 15m 54s
Dec(J2000) = +55d 24' 35"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows several overlapping FRED-like
peaks starting at T+0 and ending around T+20 sec. The peak count rate
was ~8000 counts/sec (15-350 keV), at ~T+0 sec after the trigger.
- + Read more
- March 19, 2008 GRB080319b
TITLE: GCN CIRCULAR
NUMBER: 7427
SUBJECT: GRB 080319B: Swift detection of an intense burst with a bright optical counterpart
DATE: 08/03/19 06:32:26 GMT
FROM: David Palmer at LANL
J. L. Racusin (PSU), N. Gehrels (NASA/GSFC),
S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), C. Pagani (PSU),
D. M. Palmer (LANL) and M. Stamatikos (NASA/ORAU) report on behalf of
the Swift Team:
At 06:12:49 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080319B (trigger=306757). Swift slewed immediately to
the burst. The BAT on-board calculated location is
RA, Dec 217.926, +36.303 which is
RA(J2000) = 14h 31m 42s
Dec(J2000) = +36d 18' 10"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed one bright but
complex peak with a duration of about 50 sec, with an extended tail.
The peak count rate was ~70,000 counts/sec (15-350 keV), at ~20 sec
after the trigger.
- + Read more
- March 19, 2008 GRB080319a
TITLE: GCN CIRCULAR
NUMBER: 7426
SUBJECT: GRB 080319A: Swift detection of a burst
DATE: 08/03/19 06:18:20 GMT
FROM: David Palmer at LANL
C. Pagani (PSU), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), D. M. Palmer (LANL),
J. L. Racusin (PSU) and M. Stamatikos (NASA/ORAU) report on behalf of
the Swift Team:
At 05:45:42 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080319A (trigger=306754). The Swift slew to the burst was
delayed because of an earth constraint. The BAT on-board calculated
location is RA, Dec 206.354, +44.079 which is
RA(J2000) = 13h 45m 25s
Dec(J2000) = +44d 04' 44"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a multiple peaks
with a duration of about 40 sec. The peak count rate
was ~800 counts/sec (15-350 keV), at ~10 sec after the trigger.
- + Read more
- March 15, 2008 GRB080315
TITLE: GCN CIRCULAR
NUMBER: 7416
SUBJECT: GRB 080315: Swift detection of a possible burst
DATE: 08/03/15 02:46:19 GMT
FROM: David Palmer at LANL
K. L. Page (U Leicester), W. H. Baumgartner (GSFC/UMBC),
A. P. Beardmore (U Leicester), D. N. Burrows (PSU),
M. M. Chester (PSU), N. Gehrels (NASA/GSFC),
S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU),
H. A. Krimm (GSFC/USRA), C. B. Markwardt (CRESST/GSFC/UMD),
F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL),
M. Stamatikos (NASA/ORAU), E. Troja (U Leicester/INAF-IASFPA) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 02:25:01 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080315 (trigger=306323). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 155.182, +41.729 which is
RA(J2000) = 10h 20m 44s
Dec(J2000) = +41d 43' 44"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). As is usual for a 64-second image trigger,
the TDRSS light curve shows no obvious variation. Further BAT analysis
will rely on the Malindi-downlinked data.
- + Read more
- March 10, 2008 GRB080310
TITLE: GCN CIRCULAR
NUMBER: 7382
SUBJECT: GRB 080310: Swift detection of a burst with optical afterglow
DATE: 08/03/10 08:58:27 GMT
FROM: Jay R. Cummings at NASA/GSFC/Swift
J. R. Cummings (NASA/UMBC), W. H. Baumgartner (GSFC/UMBC),
A. P. Beardmore (U Leicester), S. Campana (INAF-OAB),
P. A. Evans (U Leicester), E. A. Hoversten (PSU),
S. D. Hunsberger (PSU), C. B. Markwardt (CRESST/GSFC/UMD),
P. T. O'Brien (U Leicester), K. L. Page (U Leicester),
D. M. Palmer (LANL), R. L. C. Starling (U Leicester),
G. Tagliaferri (INAF-OAB) and T. N. Ukwatta (GSFC/GWU) report on
behalf of the Swift Team:
At 08:37:58 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080310 (trigger=305288). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 220.081, -0.166 which is
RA(J2000) = 14h 40m 19s
Dec(J2000) = -00d 09' 55"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a precursor at
T-24 seconds and multiple peaks from T-10 to T+6 seconds. The peak count
rate was ~2000 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- March 7, 2008 GRB080307
TITLE: GCN CIRCULAR
NUMBER: 7362
SUBJECT: GRB 080307: Swift detection of a burst
DATE: 08/03/07 12:01:53 GMT
FROM: David Palmer at LANL
S. T. Holland (CRESST/USRA/GSFC), S. D. Barthelmy (GSFC),
D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC),
G. Cusumano (INAF-IASFPA), P. A. Evans (U Leicester),
N. Gehrels (NASA/GSFC), O. Godet (U Leicester),
C. Guidorzi (INAF-OAB), S. D. Hunsberger (PSU), J. A. Kennea (PSU),
V. Mangano (INAF-IASFPA), C. B. Markwardt (CRESST/GSFC/UMD),
A. Moretti (INAF-OAB), P. T. O'Brien (U Leicester),
J. P. Osborne (U Leicester), C. Pagani (PSU),
K. L. Page (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), P. Romano (INAF-IASFPA), G. Sato (GSFC/ISAS),
M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester) and
E. Troja (U Leicester/INAF-IASFPA) report on behalf of the Swift
Team:
At 11:23:30 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080307 (trigger=305011). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 136.633, +35.168 which is
RA(J2000) = 09h 06m 32s
Dec(J2000) = +35d 10' 06"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a FRED
structure with a duration of at least 30 sec. The peak count rate
was ~600 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- March 3, 2008 GRB080303
TITLE: GCN CIRCULAR
NUMBER: 7351
SUBJECT: GRB 080303: Swift detection of a burst with optical afterglow
DATE: 08/03/03 09:41:42 GMT
FROM: David Palmer at LANL
T. Sakamoto (NASA/UMBC), W. H. Baumgartner (GSFC/UMBC),
A. P. Beardmore (U Leicester), G. Cusumano (INAF-IASFPA),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), C. Gronwall (PSU),
E. A. Hoversten (PSU), N. P. M. Kuin (MSSL), J. Mao (INAF-OAB),
A. Moretti (INAF-OAB), P. T. O'Brien (U Leicester),
S. R. Oates (UCL-MSSL), J. P. Osborne (U Leicester),
K. L. Page (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), P. Romano (INAF-IASFPA),
M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester),
G. Stratta (ASDC), G. Tagliaferri (INAF-OAB),
E. Troja (U Leicester/INAF-IASFPa) and H. Ziaeepour (UCL-MSSL) report
on behalf of the Swift Team:
At 09:10:35 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080303 (trigger=304549). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 112.073, -70.240 which is
RA(J2000) = 07h 28m 18s
Dec(J2000) = -70d 14' 23"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a FRED-like
structure with a duration of about 30 sec. The peak count rate
was ~2600 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- February 29, 2008 GRB080229
TITLE: GCN CIRCULAR
NUMBER: 7335
SUBJECT: GRB 080229: Swift detection of a bright burst
DATE: 08/02/29 17:31:15 GMT
FROM: Scott Barthelmy at NASA/GSFC
J. K. Cannizzo (NASA/UMBC), S. D. Barthelmy (GSFC),
A. P. Beardmore (U Leicester), J. R. Cummings (NASA/UMBC),
P. A. Evans (U Leicester), O. Godet (U Leicester), C. Gronwall (PSU),
S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU),
S. Immler (CRESST/GSFC/UMD), J. A. Kennea (PSU),
V. Mangano (INAF-IASFPA), C. B. Markwardt (CRESST/GSFC/UMD),
K. M. McLean (GSFC/UMD), A. Moretti (INAF-OAB),
P. T. O'Brien (U Leicester), J. P. Osborne (U Leicester),
C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL),
A. M. Parsons (GSFC), T. Sakamoto (NASA/UMBC), G. Sato (GSFC/ISAS),
B. Sbarufatti (INAF-IASFPA), M. Stamatikos (NASA/ORAU),
R. L. C. Starling (U Leicester), G. Stratta (ASDC) and
E. Troja (U Leicester/INAF-IASFPa) report on behalf of the Swift
Team:
At 17:04:59 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080229 (trigger=304379). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 228.217, -14.712 which is
RA(J2000) = 15h 12m 52s
Dec(J2000) = -14d 42' 43"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed three or four bright
peaks with the brightest at ~T+40 sec with a duration of about 60 sec.
The peak count rate was ~7000 counts/sec (15-350 keV), at ~40 sec
after the trigger.
- + Read more
- February 18, 2008 GRB080218b
TITLE: GCN CIRCULAR
NUMBER: 7314
SUBJECT: GRB 080218B: Swift detection of a burst
DATE: 08/02/19 00:37:50 GMT
FROM: David Palmer at LANL
P. Schady (MSSL-UCL), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester),
D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC),
P. A. Evans (U Leicester), S. T. Holland (CRESST/USRA/GSFC),
J. A. Kennea (PSU), H. A. Krimm (GSFC/USRA),
F. E. Marshall (NASA/GSFC), C. Pagani (PSU),
K. L. Page (U Leicester), D. M. Palmer (LANL),
T. Sakamoto (NASA/UMBC), G. Sato (GSFC/ISAS),
M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester),
D. E. Vanden Berk (PSU) and P. A. Ward (MSSL-UCL) report on behalf of
the Swift Team:
At 23:57:47 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080218B (trigger=303631). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 177.951, -53.100 which is
RA(J2000) = 11h 51m 48s
Dec(J2000) = -53d 06' 00"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a complex
structure with a duration of at least 12 sec, up to an
interruption in the available data caused by a TDRSS gap.
The peak count rate was ~1300 counts/sec (15-350 keV),
at ~0 sec after the trigger.
- + Read more
- February 18, 2008 GRB080218
TITLE: GCN CIRCULAR
NUMBER: 7313
SUBJECT: GRB 080218: Swift detection of a burst
DATE: 08/02/18 20:18:57 GMT
FROM: Scott Barthelmy at NASA/GSFC
H. Ziaeepour (UCL-MSSL), S. D. Barthelmy (GSFC),
J. R. Cummings (NASA/UMBC), P. A. Evans (U Leicester),
S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU),
W. B. Landsman (NASA/GSFC), K. M. McLean (GSFC/UMD), C. Pagani (PSU),
D. M. Palmer (LANL), T. Sakamoto (NASA/UMBC), G. Sato (GSFC/ISAS),
M. Stamatikos (NASA/ORAU), D. E. Vanden Berk (PSU), L. Vetere (PSU)
and P. A. Ward (MSSL-UCL) report on behalf of the Swift Team:
At 20:08:42 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080218 (trigger=303609). Swift did not slew to the burst
location because of the Sun observing constraint (34 deg from the Sun).
The BAT on-board calculated location is
RA, Dec 355.922, +12.175 which is
RA(J2000) = 23h 43m 41s
Dec(J2000) = +12d 10' 29"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows a weak peak around T_0.
The peak count rate was ~400 counts/sec (15-350 keV).
- + Read more
- February 12, 2008 GRB080212
TITLE: GCN CIRCULAR
NUMBER: 7296
SUBJECT: GRB 080212: Swift detection of a burst
DATE: 08/02/12 17:58:30 GMT
FROM: Scott Barthelmy at NASA/GSFC
H. Ziaeepour (UCL-MSSL), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester),
P. J. Brown (PSU), D. N. Burrows (PSU), M. M. Chester (PSU),
J. R. Cummings (NASA/UMBC), G. Cusumano (INAF-IASFPA),
M. De Pasquale (UCL-MSSL), O. Godet (U Leicester),
C. Guidorzi (INAF-OAB), J. A. Kennea (PSU), H. A. Krimm (GSFC/USRA),
V. Mangano (INAF-IASFPA), J. Mao (INAF-OAB),
C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC),
P. T. O'Brien (U Leicester), C. Pagani (PSU),
K. L. Page (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), P. Romano (INAF-IASFPA),
T. Sakamoto (NASA/UMBC), G. Sato (GSFC/ISAS),
B. Sbarufatti (INAF-IASFPA), M. Stamatikos (NASA/ORAU),
R. L. C. Starling (U Leicester), G. Tagliaferri (INAF-OAB),
E. Troja (U Leicester/INAF-IASFPa), D. E. Vanden Berk (PSU) and
L. Vetere (PSU) report on behalf of the Swift Team:
At 17:34:33 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080212 (trigger=303105). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 231.107, -22.752 which is
RA(J2000) = 15h 24m 26s
Dec(J2000) = -22d 45' 06"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single peak
with a duration of about 20 sec. The peak count rate was ~1000
counts/sec (15-350 keV), at ~0 sec after the trigger. There may be a
precursor at T-60 sec.
- + Read more
- February 10, 2008 GRB080210
TITLE: GCN CIRCULAR
NUMBER: 7281
SUBJECT: GRB 080210: Swift detection of a burst with optical afterglow
DATE: 08/02/10 08:27:08 GMT
FROM: David Palmer at LANL
D. Grupe (PSU), W. H. Baumgartner (GSFC/UMBC), M. M. Chester (PSU),
N. Gehrels (NASA/GSFC), E. A. Hoversten (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), D. M. Palmer (LANL),
A. M. Parsons (GSFC), M. Stamatikos (NASA/ORAU) and M. C. Stroh (PSU)
report on behalf of the Swift Team:
At 07:50:05 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080210 (trigger=302888). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 251.270, +13.830 which is
RA(J2000) = 16h 45m 05s
Dec(J2000) = +13d 49' 49"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single-peak
with substructure with a duration of about 35 sec. The peak count rate
was ~2000 counts/sec (15-350 keV), at ~10 sec after the trigger. This
was an image trigger, but with a clear light curve.
- + Read more
- February 7, 2008 GRB080207
TITLE: GCN CIRCULAR
NUMBER: 7264
SUBJECT: GRB 080207: Swift detection of a burst
DATE: 08/02/07 21:48:14 GMT
FROM: Scott Barthelmy at NASA/GSFC
J. L. Racusin (PSU), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), P. J. Brown (PSU),
D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC),
P. A. Evans (U Leicester), S. D. Hunsberger (PSU),
J. A. Kennea (PSU), C. B. Markwardt (CRESST/GSFC/UMD),
F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester),
D. M. Palmer (LANL), T. Sakamoto (NASA/UMBC),
R. L. C. Starling (U Leicester), M. C. Stroh (PSU) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 21:30:21 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080207 (trigger=302728). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 207.513, +7.514 which is
RA(J2000) = 13h 50m 03s
Dec(J2000) = +07d 30' 50"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). This was an image-trigger, so the TDRSS
lightcurve show little activity.
- + Read more
- February 5, 2008 GRB080205
TITLE: GCN CIRCULAR
NUMBER: 7250
SUBJECT: GRB 080205: Swift detection of a burst
DATE: 08/02/05 08:21:36 GMT
FROM: David Palmer at LANL
C. B. Markwardt (CRESST/GSFC/UMD), M. M. Chester (PSU),
J. R. Cummings (NASA/UMBC), P. A. Evans (U Leicester),
A. D. Falcone (PSU), N. Gehrels (NASA/GSFC), C. Guidorzi (INAF-OAB),
S. T. Holland (CRESST/USRA/GSFC), S. D. Hunsberger (PSU),
J. A. Kennea (PSU), C. Pagani (PSU), K. L. Page (U Leicester),
D. M. Palmer (LANL), D. Perez (U Leicester), J. L. Racusin (PSU),
T. Sakamoto (NASA/UMBC), M. Stamatikos (NASA/ORAU),
R. L. C. Starling (U Leicester), T. N. Ukwatta (GSFC/GWU) and
L. Vetere (PSU) report on behalf of the Swift Team:
At 07:55:51 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080205 (trigger=302506). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 98.219, +62.769 which is
RA(J2000) = 06h 32m 53s
Dec(J2000) = +62d 46' 07"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows three roughly
equal-height peaks spanning approximately 120 seconds. The peak
count rate was ~1000 counts/sec (15-350 keV), at ~0 sec, ~70 sec,
and ~95 sec after the trigger.
- + Read more
- January 29, 2008 GRB080129
TITLE: GCN CIRCULAR
NUMBER: 7226
SUBJECT: GRB 080129 (?): Swift detection of a possible burst
DATE: 08/01/29 06:31:10 GMT
FROM: Stefan Immler at NASA/GSFC
S. Immler (CRESST/GSFC/UMD), D. N. Burrows (PSU), M. M. Chester (PSU),
N. Gehrels (NASA/GSFC), S. T. Holland (CRESST/USRA/GSFC),
E. A. Hoversten (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), M. Perri (ASDC), M. Stamatikos (NASA/ORAU) and
G. Stratta (ASDC) report on behalf of the Swift Team:
At 06:06:45 UT, the Swift Burst Alert Telescope (BAT) triggered and
located a possible GRB 080129 (trigger=301981). The BAT on-board calculated
location is RA, Dec 105.280, -7.827 which is
RA(J2000) = 07h 01m 07s
Dec(J2000) = -07d 49' 35"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve for this event appears
to show a duration of about 80 sec with a peak of ~600 counts/sec
(15-350 keV), at ~30 sec after the trigger although, as is usual
for image triggers, the TDRSS light curve is noisy.
The location of the source, 1.4 degrees from the Galactic plane
raises the possibility that this is a Galactic transient.
Further analysis will require the downlinked data from Malindi.
- + Read more
- January 23, 2008 GRB080123
TITLE: GCN CIRCULAR
NUMBER: 7203
SUBJECT: GRB 080123: Swift detection of a short burst
DATE: 08/01/23 04:43:57 GMT
FROM: Jamie A. Kennea at PSU/Swift-XRT
T. N. Ukwatta (GSFC/GWU), W. H. Baumgartner (GSFC/UMBC),
M. M. Chester (PSU), N. Gehrels (NASA/GSFC),
S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU),
S. Immler (CRESST/GSFC/UMD), J. A. Kennea (PSU),
V. Mangano (INAF-IASFPA), F. E. Marshall (NASA/GSFC),
D. M. Palmer (LANL), T. Sakamoto (NASA/UMBC),
B. Sbarufatti (INAF-IASFPA) and D. E. Vanden Berk (PSU) report on
behalf of the Swift Team:
At 04:21:57 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080123 (trigger=301578). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 338.929, -64.890 which is
RA(J2000) = 22h 35m 43s
Dec(J2000) = -64d 53' 23"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a double-peaked
structure with a duration of about 0.5 sec. The peak count rate
was ~6000 counts/sec (15-350 keV), at ~0.1 sec after the trigger.
- + Read more
- January 21, 2008 GRB080121
TITLE: GCN CIRCULAR
NUMBER: 7209
SUBJECT: GRB 080121: Swift-BAT detection of a very weak, short burst
DATE: 08/01/23 20:39:09 GMT
FROM: Jay R. Cummings at NASA/GSFC/Swift
J. R. Cummings and D. M. Palmer for the Swift-BAT team
At 21:29:55 on Jan 21, 2008, BAT detected a weak short GRB
(trigger #301491) at a ground-calculated location
RA, Dec 137.235, +41.841, error radius 3 arcmin (90% confidence),
which is:
RA(J2000) = 09h 08m 56s
Dec(J2000) = +41d 50' 29"
The significance of the source in the detection image was just
below the alert threshold, so Swift did not slew immediately to
the burst. In addition, the source location was in Moon constraint,
so no late observation was made.
- + Read more
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