X-ray imaging and spectroscopic study of the SNR Kes 73 hosting the magnetar 1E 1841–045
Harsha S. Kumar,Samar Safi-Harb,Patrick Slane,Eric V. Gotthelf +3 more
- Vol. 9, pp 235-238
TLDR
In this article, Chandra and XMM-Newton images were used to study the young Galactic supernova remnant (SNR) Kes 73 associated with the anomalous X-ray pulsar (AXP) 1E 1841-045.Abstract:
Abstract We present the first detailed Chandra and XMM-Newton study of the young Galactic supernova remnant (SNR) Kes 73 associated with the anomalous X-ray pulsar (AXP) 1E 1841–045. Images of the remnant in the radio (20 cm), infrared (24 μm), and X-rays (0.5–7 keV) reveal a spherical morphology with a bright western limb. High-resolution Chandra images show bright diffuse emission across the remnant, with several small-scale clumpy and knotty structures filling the SNR interior. The overall Chandra and XMM-Newton spectrum of the SNR is best described by a two-component thermal model with the hard component characterized by a low ionization timescale, suggesting that the hot plasma has not yet reached ionization equilibrium. The soft component is characterized by enhanced metal abundances from Mg, Si, and S, suggesting the presence of metal-rich supernova ejecta. We discuss the explosion properties of the supernova and infer the mass of its progenitor star. Such studies shed light on our understanding of SNRs associated with highly magnetized neutron stars.read more
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The Discovery of an Anomalous X-Ray Pulsar in the Supernova Remnant Kes 73
TL;DR: In this article, the authors reported 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.
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Supernova remnant energetics and magnetars: no evidence in favour of millisecond proto-neutron stars
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Journal ArticleDOI
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