The Peculiar X-Ray Evolution of Supernovae 1978K, 1979C and 1993J

Details The Peculiar X-Ray Evolution of Supernovae 1978K, 1979C and 1993J The Peculiar X-Ray Evolution of Supernovae 1978K, 1979C and 1993J

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2400i&link_type=abstract

Chandra Proposal ID #09500615

Physics

Chandra Proposal Id #09500615

Scientific paper

Supernovae (SNe) 1978K, 1979C, and 1993J are some of the brightest and best observed SNe in the X-ray regime. Over the past ~2 decades, SNe 1978K and 1979C have shown no evolution in X-rays, with high sustained (0.2-10 keV) luminosities around E39 ergs/s and high inferred mass-loss rates of the progenitors (>E-4 M_sun/year) over the last 40,000 years prior to their explosions. However, the latest Chandra, XMM-Newton and Swift observations show a dramatic decrease in their X-ray luminosities similar to that of SN 1993J. We propose Chandra observations to follow their fast rates of decline which will bring the long-term X-ray monitoring of these three SNe to a final closure.

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