Older GCN Circulars Archive

1. The Older Circulars
2. Even Older Circulars

To learn more about the GCN Circulars and how to subscribe.

(Listed in reverse serial number order -- newest first: 5500 - 5599)

• 5599 GRB 060923A: Swift XRT refined analysis
  
• 5598 GRB 060923C: Keck Observations
  
• 5597 GRB 060923A: Keck and Gemini Observations
  
• 5596 GRB 060923C: Xinglong TNT optical observations
  
• 5595 GRB 060923B, Swift-BAT refined analysis
  
• 5594 GRB060923C : Faulkes Telescope South optical limits
  
• 5593 GRB060923C: Faulkes Telescope North optical observations
  
• 5592 GRB 060923C: optical observation
  
• 5591 GRB 060923C: Swift detection of a burst
  
• 5590 GRB 060923B: Swift detection of a burst
  
• 5589 GRB 060923, Swift-BAT refined analysis
  
• 5588 GRB 060923: Early Super-LOTIS Observations
  
• 5587 GRB 060923: UKIRT nIR observations - candidate afterglow
  
• 5586 GRB060923: Faulkes Telescope North optical observations
  
• 5585 GRB060923 - SDSS Pre-Burst Observations
  
• 5584 GRB 060923: KAIT observations
  
• 5583 GRB 060923: Swift detection of a burst
  
• 5582 Swift detection of IGR J17497-2821 (trigger 230504)
  
• 5581 Swift detects a hard X-ray burst from AXP CXOU J164710.2-455216
  
• 5580 GRB060919: Swift/UVOT optical observations
  
• 5579 GRB 060919 : Faulkes South Telescope Observations
  
• 5578 GRB 060919, Swift-BAT refined analysis
  
• 5577 GRB060919: XRT refined analysis
  
• 5576 GRB 060919: TAROT optical observations
  
• 5575 GRB 060919: Swift detection of a burst
  
• 5574 GRB 060912A: VLA Observation
  
• 5573 GRB 060912A: Probable Host Galaxy
  
• 5572 IBAS Alert n.3470: not a GRB
  
• 5571 GRB060825: MAGIC telescope GeV observation
  
• 5570 Konus-Wind observation of GRB 060912
  
• 5569 IBAS Alert No.3468: not a GRB
  
• 5568 GRB 060912: Redshift of nearby 2MASS galaxy
  
• 5567 GRB060912: optical observations
  
• 5566 GRB 060912B: Watcher observations
  
• 5565 GRB060912: Swift/UVOT Observations
  
• 5564 GRB060912: OPTIMA-Burst optical observations
  
• 5563 GRB 060912B: a long GRB detected with INTEGRAL
  
• 5562 GRB 060912: Swift XRT Team Refined Analysis
  
• 5561 GRB 060912, Swift-BAT refined analysis
  
• 5560 GRB 060912: Correction to GCN 5559
  
• 5559 GRB 060912: Xinglong TNT optical observations
  
• 5558 GRB 060912: Swift detection of a burst with an optical afterglow
  
• 5557 GRB060906: Danish/DFOSC optical observations
  
• 5556 VLA observations of GRB 060908
  
• 5555 GRB 060908: redshift
  
• 5554 GRB 060908, Swift/XRT refined analysis
  
• 5553 GRB 060908: Swift/UVOT Observations
  
• 5552 GRB 060908: Danish/DFOSC optical observations
  
• 5551 GRB 060908, Swift-BAT refined analysis
  
• 5550 GRB 060908 - SDSS Pre-burst Observations
  
• 5549 GRB 060904B : CFHT/WIRCam NIR afterglow observations
  
• 5548 GRB 060904B: Kiso Optical observation
  
• 5547 GRB 060904A : Optical limit
  
• 5546 GRB 060908: REM optical prompt observation
  
• 5545 GRB 060908: PROMPT Detection of a Bright Counterpart
  
• 5544 GRB 060908: Swift detection of a burst with a bright optical counterpart
  
• 5543 GRB 060904A: Suzaku/WAM observation of the prompt emission
  
• 5542 GRB060906 , optical observation
  
• 5541 GRB060904b optical detections (delayed report due to internet outage)
  
• 5540 GRB 060906: optical observation
  
• 5539 GRB 060906: Early RAPTOR optical limits
  
• 5538 GRB 060906, Swift-BAT refined spectral analysis
  
• 5537 GRB 060906: Swift/XRT Refined Analysis
  
• 5536 GRB 060906: Swift-UVOT observations
  
• 5535 VLT redshift of GRB 060906
  
• 5534 GRB 060906, Swift-BAT refined analysis
  
• 5533 GRB 060906: FRAM observations - flash determination (airplane)
  
• 5532 GRB 060906: KAIT observations
  
• 5531 GRB 060906: Confirmation of P60 Optical Afterglow
  
• 5530 GRB 060906: observations with FRAM
  
• 5529 GRB 060906 (?): P60 Optical Afterglow Candidate
  
• 5528 GRB 060906: Swift detection of a probable burst
  
• 5527 GRB 060904A Milagro GeV/TeV Observations
  
• 5526 GRB060904b, optical observations
  
• 5525 GRB 060904b: SMARTS optical/IR afterglow observations
  
• 5524 GRB 060904B: RTT150 optical observations
  
• 5523 GRB060904A: Swift/UVOT optical observations
  
• 5522 GRB 060904A: Subaru NIR observation
  
• 5521 GRB 060904A: pseudo-z from spectral parameters of the prompt emission
  
• 5520 GRB 060904B: Swift-BAT refined analysis
  
• 5519 GRB060904b: Optical observations with Swift/UVOT
  
• 5518 Konus-Wind observation of GRB 060904A
  
• 5517 GRB 060904B: Swift-XRT refined analysis
  
• 5516 GRB 060904A: Refined analysis of the Swift-BAT burst
  
• 5515 GRB 060904A: Swift-XRT refined analysis
  
• 5514 GRB 060904A: Suzaku-XIS and -HXD observation plan
  
• 5513 GRB 060904B: VLT redshift
  
• 5512 GRB 060904A: P60 Observations
  
• 5511 GRB 060904B: Optical observations at Crni Vrh
  
• 5510 GRB060904B: Watcher observations
  
• 5509 GRB 060904B BOOTES-IR and 1.5m OSN observations
  
• 5508 GRB 060904B: TAROT optical counterpart observations
  
• 5507 GRB060904B - SDSS Pre-Burst Observations
  
• 5506 GRB 060904: TAROT optical observations
  
• 5505 GRB 060904B: Swift detection of a burst with optical counterpart
  
• 5504 GRB 060904B: ROTSE-III Detection of Optical Counterpart
  
• 5503 GRB060904 - SDSS Pre-Burst Observations
  
• 5502 GRB 060904: Swift detection of a bright burst
  
• 5501 GRB060901: Optical observations
  
• 5500 060901: Swift UVOT followup observations
  

After a while the above table gets too large and then the older entries are moved to the following tables.

Circulars 5400-5499   06-08-05 to 06-09-03
Circulars 5300-5399   06-07-11 to 06-08-05
Circulars 5200-5299   06-06-10 to 06-07-11
Circulars 5100-5199   06-05-10 to 06-06-03
Circulars 5000-5099   06-04-24 to 06-05-10
Circulars 4900-4999   06-03-21 to 06-04-24
Circulars 4800-4899   06-02-20 to 06-03-21
Circulars 4700-4799   06-02-06 to 06-02-20
Circulars 4600-4699   06-01-25 to 06-02-06
Circulars 4500-4599   06-01-13 to 06-01-25
Circulars 4400-4499   05-12-27 to 06-01-13
Circulars 4300-4399   05-11-22 to 05-12-27
Circulars 4200-4299   05-11-06 to 05-11-22
Circulars 4100-4199   05-10-16 to 05-11-06
Circulars 4000-4099   05-09-19 to 05-10-16
Circulars 3900-3999   05-08-28 to 05-09-18
Circulars 3800-3899   05-08-14 to 05-08-28
Circulars 3700-3799   05-07-29 to 05-08-14
Circulars 3600-3699   05-07-13 to 05-07-29
Circulars 3500-3599   05-05-28 to 05-07-13
Circulars 3400-3499   05-05-10 to 05-05-28
Circulars 3300-3399   05-04-21 to 05-05-10
Circulars 3200-3299   05-04-09 to 05-04-21
Circulars 3100-3199   05-03-16 to 05-04-09
Circulars 3000-3099   05-01-30 to 05-03-16
Circulars 2900-2999   04-12-23 to 05-01-28
Circulars 2800-2899   04-10-13 to 04-12-23
Circulars 2700-2799   04-09-09 to 04-10-13
Circulars 2600-2699   04-05-14 to 04-09-09
Circulars 2500-2599   03-12-22 to 04-05-14
Circulars 2400-2499   03-09-25 to 03-12-21
Circulars 2300-2399   03-07-15 to 03-09-24
Circulars 2200-2299   03-05-03 to 03-07-15
Circulars 2100-2199   03-04-05 to 03-05-03
Circulars 2000-2099   03-03-27 to 03-04-05
Circulars 1900-1999   03-02-27 to 03-03-29
Circulars 1800-1899   03-01-11 to 03-02-27
Circulars 1700-1799   02-11-20 to 03-01-11
Circulars 1600-1699   02-10-07 to 02-11-19
Circulars 1500-1599   02-08-16 to 02-10-07
Circulars 1400-1499   02-05-31 to 02-08-16
Circulars 1300-1399   02-03-22 to 02-05-31
Circulars 1200-1299   01-12-13 to 02-03-12
Circulars 1100-1199   01-09-22 to 01-12-13
Circulars 1000-1099   01-03-02 to 01-09-22
Circulars 900-999   00-12-14 to 01-03-01
Circulars 800-899   00-09-27 to 00-12-14
Circulars 700-799   00-06-13 to 00-09-27
Circulars 600-699   00-03-08 to 00-06-13
Circulars 500-599   99-12-16 to 00-03-08
Circulars 400-499   99-08-10 to 99-12-16
Circulars 300-399   99-05-08 to 99-08-10
Circulars 199-299   99-01-23 to 99-05-07
Circulars 100-198   98-06-13 to 99-01-22
Circulars neg4-099   97-02-?? to 98-06-13