G. Vasisht and E. V. Gotthelf 1997 ApJ 486 L129 doi:10.1086/310843
The Discovery of an Anomalous X-Ray Pulsar in the Supernova Remnant Kes 73
FREEG. Vasisht1 and E. V. Gotthelf2,3
Show affiliationsWe report the discovery of pulsed X-ray emission from the compact source 1E 1841-045, using data obtained with the Advanced Satellite for Cosmology and Astrophysics. The X-ray source is located in the center of the small-diameter supernova remnant (SNR) Kes 73 and is very likely to be the compact stellar remnant of the supernova that formed Kes 73. The X-rays are pulsed with a period of 
11.8 s and a sinusoidal modulation of roughly 30%. We interpret this modulation to be the rotation period of an embedded neutron star, and as such it would be the longest spin period for an isolated neutron star to date. This is especially remarkable since the surrounding SNR is very young, ~2000 yr old. We suggest that the observed characteristics of this object are best understood within the framework of a neutron star with an enormous dipolar magnetic field, B 8 × 1014 G.
- Subject headings
ISM: individual (Kesteven 73); pulsars: individual (1E 1841–045); stars: magnetic fields; stars: neutron; supernova remnants
- Dates
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Issue 2 (1997 September 10)
Received 1997 April 11, accepted for publication 1997 June 23
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The Discovery of an Anomalous X-Ray Pulsar in the Supernova Remnant Kes 73
G. Vasisht and E. V. Gotthelf 1997 ApJ 486 L129
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Kes 73: A Young Supernova Remnant with an X-Ray-bright, Radio-quiet Central Source
E. V. Gotthelf and G. Vasisht 1997 ApJ 486 L133
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The X-Ray Luminosity-Mass Relation for Local Clusters of Galaxies
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