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Chandra Phase-Resolved X-Ray Spectroscopy of the Crab PulsarWe present here the first phase-resolved study of the X-ray spectral properties of the Crab Pulsar that covers all pulse phases. The superb angular resolution of the Chandra X-ray Observatory enables distinguishing the pulsar from the surrounding nebulosity, even at pulse minimum. Analysis of the pulse-averaged spectrum measures interstellar photoelectric absorption and scattering by dust grains in the direction of the Crab Nebula. Analysis of the spectrum as a function of pulse phase measures the low-energy X-ray spectral index even at pulse minimum - albeit with large statistical uncertainty. The data are used to set a new upper limit to any thermal component.
Document ID
20030062177
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Weisskopf, Martin C. (NASA Marshall Space Flight Center Huntsville, AL, United States)
ODell, Stephen L. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Paerels, Frits (Columbia Univ. New York, NY, United States)
Elsner, Ronald F. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Becker, Werner E. (Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Tennant, Allyn F. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Swartz, Douglas A. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Astronomy
Distribution Limits
Public
Copyright
Other

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