The Tortoise and the Hare: AN AXAF Study of Two Composite Supernova Remnants

Details The Tortoise and the Hare: AN AXAF Study of Two Composite Supernova Remnants The Tortoise and the Hare: AN AXAF Study of Two Composite Supernova Remnants

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop...37s&link_type=abstract

Chandra Proposal ID #01500336

Computer Science

Chandra Proposal Id #01500336

Scientific paper

G11.2-0.3 and Kes 73 are two composite SNRs whose properties are virtually indistinguishable but for one glaring exception. While the thermal properties of each indicate a young SNR which resulted from a typical explosion in a somewhat dense medium, the compact central relics produced during the supernova events are dramatically different. In G11.2-0.3 we find a 65 ms pulsar driving an extended synchrotron nebula, typical of scenarios for young SNRs from massive star progenitors. In Kes 73, however, there resides an unresolved source whose rotation rate is nearly 200 times slower than its would-be cousin in G11.2-0.3. We propose ACIS imaging, spectral, and timing studies of each remnant to help us understand the divergent evolutionary paths which have led to these contrasting objects.

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