Other
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003pasb.conf..207p&link_type=abstract
"Pulsars, AXPs and SGRs observed with BeppoSAX and Other Observatories, Proceedings of the International Workshop held in Marsal
Other
1
Scientific paper
We present X-ray imaging, timing, and phase resolved spectroscopy of the anomalous X-ray pulsars (AXPs) 1E 2259+586 and 4U 0142+61 using the Chandra X-ray Observatory (CXO). The pulsar spectra are well described by a power law plus blackbody model; we find no evidence for spectral features between 0.5-7.0 keV. We derive a new, precise X-ray position for the sources and determine their spin periods. Phase resolved X-ray spectra of 1E 2259+586 show no significant variation as a function of pulse phase. However, phase resolved X-ray spectroscopy of 4U 0142+61 shows evidence for evolution in phase in either Gamma, or kTBB or some combination thereof as a function of pulse phase. We have detected emission beyond 4 arcsec from the central source and extending beyond 100 arcsec, likely due to dust scattering in the interstellar medium and, for 1E 2259+586, possibly due to the supernova remnant G109.1-1.0.
Belloni Tomaso
Finger Mark H.
Gogus Ersin
Kouveliotou Chryssa
Patel Sandeep Kumar
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