Fermi Telescope reveals a population of radio-quiet gamma-ray pulsars
Two studies published in Science Express show the analysis of gamma-rays from two dozen pulsars, including 16 discovered by NASA's Fermi Gamma-ray Space Telescope. Fermi is the first spacecraft able to identify pulsars by their gamma-ray emissions alone. A pulsar is the rapidly spinning and highly magnetized core left behind when a massive star explodes. Most of the currently cataloged pulsars, some 1800 of them, were found through their periodic radio emissions; pulses caused by narrow, lighthouse-like radio beams emanating from the pulsar's magnetic poles, according to current theory. read more
"Fermi has truly unprecedented power for discovering and studying gamma-ray pulsars," said Paul Ray of the Naval Research Laboratory in Washington.
"That's about one photon for every thousand Vela rotations," said Marcus Ziegler, a member of the team reporting on the new pulsars at the University of California, Santa Cruz. "From the faintest pulsar we studied, we see only two gamma-ray photons a day."
"Before Fermi launched, it wasn't clear that pulsars with millisecond periods could emit gamma rays at all," said Lucas Guillemot at the Center for Nuclear Studies in Gradignan, near Bordeaux, France.
Fermi Telescope reveals a population of radio-quiet gamma-ray pulsars
(PhysOrg.com) -- A new class of pulsars detected by NASA's Fermi Gamma-ray Space Telescope is solving the mystery of previously unidentified gamma-ray sources and helping scientists understand ...
Thu 2 Jul 09 from PhysOrg
NASA's Fermi Telescope Probes Dozens of Pulsars
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Vela Pulsar And Dozens Of Others Get Probed
Two studies published in Science Express show the analysis of gamma-rays from two dozen pulsars, including 16 discovered by NASA's Fermi Gamma-ray Space Telescope. Fermi is the first spacecraft ...
Mon 6 Jul 09 from Scientific Blogging
Fermi Telescope reveals new type of pulsar
A new class of pulsars detected by NASA's Fermi Gamma-ray Space Telescope is solving the mystery of previously unidentified radio-quiet gamma-ray sources...
Fri 3 Jul 09 from Science a Go Go
New Class Of Pulsars Solve Mystery Of Previously Unidentified Gamma-ray Sources, Fri 3 Jul 09 from ScienceDaily
NASA'S Fermi telescope finds 16 pulsars
WASHINGTON, July 2 (UPI) -- NASA's Fermi Gamma-ray Space Telescope -- able to identify pulsars by gamma-ray emissions -- has provided data for two studies, U.S. officials said.
Thu 2 Jul 09 from UPI
Fermi Telescope Probes Dozens Of Pulsars
Washington DC (SPX) Jul 06, 2009 - With NASA's Fermi Gamma-ray Space Telescope, astronomers now are getting their best look at those whirling stellar cinders known as pulsars. In two studies ...
Mon 6 Jul 09 from SpaceDaily
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