Expansion of Kes 73, A Shell Supernova Remnant Containing a Magnetar
نویسندگان
چکیده
منابع مشابه
Influence of an Internal Magnetar on Supernova Remnant Expansion
Most of the proposed associations between magnetars and supernova remnant suffer from age problems. Usually, supernova remnants ages are determined from an approximation of the Sedov-Taylor phase relation between radius and age, for a fixed energy of the explosion ∼ 10 erg. Those ages do not generally agree with the characteristic ages of the (proposed) associated magnetars. We show quantitativ...
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A Chandra X-ray observation has detected an unresolved source at the center of the supernova remnant Kes 79. The best single-model fit to the source spectrum is a blackbody with an X-ray luminosity L X (0.3-8.0 keV)=7×10 33 ergs s −1. There is no evidence for a surrounding pulsar wind nebula. There are no cataloged counterparts at other wavelengths, but the absorption is high. The source proper...
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I report here on the analysis and interpretation of a Chandra observation of the supernova remnant Kes 32. Kes 32 is rather weak in X-rays due to a large interstellar absorption, which is found to be ∼ 4 × 10 cm, larger than previously reported. Spectral analysis indicates that the ionization age of this object is very young, with net ∼ 4×10 9 cms, and a temperature of kTe ∼ 1 keV. The X-ray em...
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The environments of supernova explosion are often inhomogeneous and there may be jumps in their density structure. We have developed a semi-analytic model under the thin-shell approximation for supernova remnants that evolve crossing a density jump in the ambient medium. The generic evolutionary relations are presented for the blast wave after impacting on a cavity wall, which may be produced b...
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We compare recent observations of the supernova remnant G11.2−0.3 taken with the VLA during 2001−02 with images from VLA archives (1984−85) to detect and measure the amount of expansion that has occurred during 17 years. The bright, circular outer shell shows a mean expansion of (0.71± 0.15)% and (0.50±0.17)%, from 20and 6-cm data, respectively, which corresponds to a rate of 0. 057±0. 012/yr a...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2017
ISSN: 1538-4357
DOI: 10.3847/1538-4357/aa830f