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Discovery of X-Ray Emission from the Crab Pulsar at Pulse MinimumThe Chandra X-Ray Observatory observed the Crab pulsar using the Low-Energy Transmission Grating with the High-Resolution Camera. Time-resolved zeroth-order images reveal that the pulsar emits X-rays at all pulse phases. Analysis of the flux at minimum - most likely non-thermal in origin - places an upper limit (T(sub infinity) < 2.1 MK) on the surface temperature of the underlying neutron star. In addition, analysis of the pulse profile establishes that the error in the Chandra-determined absolute time is quite small, -0.2 +/- 0.1 ms.
Document ID
20020023810
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Tennant, Allyn F. (NASA Marshall Space Flight Center Huntsville, AL United States)
Becker, Werner (Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Juda, Michael (Smithsonian Astrophysical Observatory Cambridge, MA United States)
Elsner, Ronald F. (NASA Marshall Space Flight Center Huntsville, AL United States)
Kolodziejczak, Jeffery J. (NASA Marshall Space Flight Center Huntsville, AL United States)
Murray, Stephen S. (Smithsonian Astrophysical Observatory Cambridge, MA United States)
ODell, Stephen L. (NASA Marshall Space Flight Center Huntsville, AL United States)
Paerels, Frits (Columbia Univ. New York, NY United States)
Swartz, Douglas A. (Universities Space Research Association Huntsville, AL United States)
Date Acquired
August 20, 2013
Publication Date
June 20, 2001
Publication Information
Publication: Astrophysical Journal
Volume: 554
Subject Category
Space Radiation
Distribution Limits
Public
Copyright
Other