期刊
ASTROPHYSICAL JOURNAL
卷 554, 期 2, 页码 L173-L176出版社
IOP PUBLISHING LTD
DOI: 10.1086/321718
关键词
ISM : individual (Crab Nebula) pulsars : individual (Crab Pulsar) radiation mechanisms : nonthermal stars : neutron; X-rays : general
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-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.
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