2002/12/02 by Hakki Ogelman, Ogelman, Hakki, Emre Tepedelenlioglu +1
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0212017
5 pages, 3 figures, to appear in "High Energy Studies of Supernova Remnants and Neutron Stars" (COSPAR 2002), Advances in Space Research, in press
arxiv created 2003/05/16 · arxiv updated 2009/12/01
PSR B0628-28 is an X-ray emitting radio pulsar which was observed with Advanced CCD Imaging Spectrometer (ACIS) on board Chandra on 2001 November 04 and on 2002 March 25 for 2000 s and 17000 s, respectively. The source countrate was 0.0111+-0.0013 cps. Making PSR B0628-28 to be the longest period X-ray emitting pulsar. The spectral distribution of counts can be described by several model fits. A blackbody fit yields a temperature kT=2.69-0.09+0.09x106 K together with NH=0.082-0.03+0.04x1022 cm-2 and a powerlaw fit yields a photon index of γ=2.65-0.29+0.28 with a hydrogen column density of NH=0.13-0.021+0.028x1022 cm-2. Confirming the previous ROSAT pointed observation for PSR 1813-36, there was no positive detection from the 30ks Chandra ACIS observation on 2001 October 25. We obtained an upper limit for the countrate of 2.3x10-4 cps.