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Pulsars Emit Gamma-rays from Equator
A pulsar is a rapidly spinning and highly magnetized neutron star, the crushed core left behind when a massive sun explodes. Most were found through their pulses at radio wavelengths, which are thought to be caused by narrow, lighthouse-like beams emanating from the star's magnetic poles.

When it comes to gamma-rays, pulsars are no longer lighthouses. A new class of gamma-ray-only pulsars shows that the gamma rays must form in a broader region than the lighthouse-like radio beam. Astronomers now believe the pulsed gamma rays arise far above the neutron star.


The pulsar's radio beams (green) never intersect Earth, but its pulsed gamma rays (magenta) do.    The pulsar's radio beams (green) never intersect Earth, but its pulsed gamma rays (magenta) do.
Duration: 33.0 seconds
Available formats:
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  640x360 (29.97 fps) MPEG-4   6 MB
  640x360 (29.97 fps) MPEG-1   7 MB
  512x288 (29.97 fps) MPEG-1   5 MB
  320x240 (29.97 fps) MPEG-4   998 KB
  320x180     PNG           112 KB
  160x80       PNG           41 KB
  80x40         PNG           14 KB
  1280x720 (30 fps) QT         20 MB
  1280x720 (30 fps) QT         296 MB
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Animation Number:10361
Completed:2009-01-09
Animator:Cruz DeWilde (Avant Gravity) (Lead)
Producer:Stefanie Misztal (UMBC)
Scientist:Steven Ritz (NASA/GSFC)
Platform/Sensor/Data Set:Fermi/LAT
Keywords:
SVS >> Gamma Ray
SVS >> HDTV
SVS >> Gamma Ray Burst
SVS >> Astrophysics
SVS >> Universe
SVS >> Pulsar
SVS >> GLAST
SVS >> Gamma Ray Observatory
SVS >> Fermi
 
 
Please give credit for this item to
NASA/Fermi/Cruz deWilde


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