Energetic young pulsars and expanding blast waves [ supernova remnants (SNRs)] are the most visible remains after massive stars, ending their lives, explode in core-collapse supernovae. The Fermi Gamma- Ray Space Telescope has unveiled a radio quiet pulsar located near the center of the compact synchrotron nebula inside the supernova remnant CTA 1. The pulsar, discovered through its gamma- ray pulsations, has a period of 316.86 milliseconds and a period derivative of 3.614 x 10(-13) seconds per second. Its characteristic age of 10(4) years is comparable to that estimated for the SNR. We speculate that most unidentified Galactic gamma- ray sources associated with star- forming regions and SNRs are such young pulsars.
|Autori interni:||GIGLIETTO, Nicola|
|Titolo:||The Fermi Gamma-Ray Space Telescope Discovers the Pulsar in the Young Galactic Supernova Remnant CTA 1 RID B-5372-2009 RID G-6769-2011 RID A-5582-2009 RID D-9467-2011|
|Data di pubblicazione:||2008|
|Digital Object Identifier (DOI):||10.1126/science.1165572|
|Appare nelle tipologie:||1.1 Articolo in rivista|