The Thermal Composite SNR Kes 79

Details The Thermal Composite SNR Kes 79 The Thermal Composite SNR Kes 79

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..614s&link_type=abstract

Chandra Proposal ID #02500707

Computer Science

Chandra Proposal Id #02500707

Scientific paper

Kes 79 is a relatively young (3-6 kyr) supernova remnant (SNR) with an unusual double-shell X-ray structure. The faint outer shell is aligned with the radio shell, while the bright interior X-rays may form a second shell, although the data are inconclusive. Kes 79 has been classified as a thermal composite remnant due to the thermal X-rays in its interior, but it is very unusual in that an outer shell can also be seen. We propose a 30 ksec ACIS-I observation of Kes 79 to answer these questions about the origin of the interior emission, to map the outer shell and determine its spectrum, and to determine which if any of the competing models for thermal composite remnants fit this unusual object. We will also search for a pulsar with a sensitivity 30 times greater than the existing limit.

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