Other
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2822c&link_type=abstract
Chandra proposal ID #11500373
Other
Scientific paper
Recently, we found a new candidate of an X-ray supernova (XSN), SN 2004am, that shows rising X-ray flux for several years after explosion. There are only two SNe, SN 1996cr and SN 1987A, which have similar long-term X-ray light curve. If SN 2004am is similar to the other two Type II SNe, the supergiant progenitor likely explodes into a wind-blown bubble resulting a unique X-ray light curve. Further regular monitoring observations of SN 2004am will allow us to constrain the light curve slope and luminosity. By comparing these with SN 1996cr and SN 1987A, we might be able to gain valuable information about the circumstellar matter density structure. Hence, confirming the XSN nature of SN 2004am will add an important sample in studying late-time behaviors of Type II SNe.
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