Continuing Chandra Observations of the X-Ray Supernovae SN 1999EM and SN 1998S

Details Continuing Chandra Observations of the X-Ray Supernovae SN 1999EM and SN 1998S Continuing Chandra Observations of the X-Ray Supernovae SN 1999EM and SN 1998S

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..611l&link_type=abstract

Chandra Proposal ID #02500555

Physics

Chandra Proposal Id #02500555

Scientific paper

SN 1999em and SN 1998S are among the brightest supernovae (SNe) of their respective subclasses of the past decade. Both were targets of opportunity for both HST and Chandra. We propose to continue observations of these important sources. SN 1999em is the closest Type IIP SN and the only one observed in both radio and X-rays. It is seen to exhibit unusual behavior in both of these regimes and provides an unprecedented opportunity to determine the nature of this subclass. SN 1998S is one of the few radio loud Type IIn SN and presents a rare opportunity to follow this subclass through its optical, radio, and X-ray evolution. Regular monitoring of these SNe with Chandra will provide new insight into the structures of their respective circumstellar media and SN ejecta.

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