Discovery of X-Ray Emission from the Crab Pulsar at Pulse Minimum
The Astrophysical Journal2001Vol. 554(2), pp. L173–L176
Citations Over TimeTop 10% of 2001 papers
Allyn F. Tennant, W. Becker, M. Juda, Ronald F. Elsner, Jeffery J. Kolodziejczak, S. S. Murray, Stephen L. O’Dell, F. Paerels, Douglas A. Swartz, N. Shibazaki, Martin C. Weisskopf
Abstract
The 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 nonthermal in origin—places an upper limit (T∞ < 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.
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