Late X-ray Emission Of Supernovae: Sn1988z And Sn1978k

Details Late X-ray Emission Of Supernovae: Sn1988z And Sn1978k Late X-ray Emission Of Supernovae: Sn1988z And Sn1978k

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.0114s&link_type=abstract

American Astronomical Society, HEAD meeting #9, #1.14; Bulletin of the American Astronomical Society, Vol. 38, p.331

Astronomy and Astrophysics

Astronomy

Scientific paper

Few supernovae have been detected and followed in the X-ray band beyond a few years. Late-time behavior is particularly important as an indication of late-phase stellar mass loss. A recent observation of SN1988Z shows a decline at log t -2.6, one of the steepest light curves. The steepness argues for a high density, log n > 5 and is inconsistent with constant mass-loss phase from the progenitor. An observation of SN1978K in 2003 continues a trend of decreasing temperature, but shows an increase in flux in the soft and hard bands. This increase likely translates to the shock overrunning a dense cloud or a region of enhanced mass loss from the progenitor. We present a summary of our results.
The participation of E. Lenz and EMS were supported by CXO Grant G04-5071A to UT-SA.

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