Small-Diameter Galactic Supernova Remnants: The Missing Young Remnants?

Details Small-Diameter Galactic Supernova Remnants: The Missing Young Remnants? Small-Diameter Galactic Supernova Remnants: The Missing Young Remnants?

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1696r&link_type=abstract

Chandra Proposal ID #06500281

Computer Science

Chandra Proposal Id #06500281

Scientific paper

We propose to study four small-diameter Galactic supernova remnants (SNRs) with well-defined radio shells suggestive of young age, and high radio surface brightness. Chandra observations should provide reliable ages, and show if these remnants really are young and can help fill the gap between inferred SN rates and known young SNRs. None of these objects has been previously resolved in X-rays, though 3 have been detected. We expect to obtain between 4000 and 30000 counts per remnant, sufficient for moderate to high-resolution imaging and spatially resolved spectroscopy. We should be able to identify shell emission, and obtain ages; identify central emission, discriminate possible pulsar-wind nebulae or compact objects, and characterize ejecta emission if present.

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