G292.0+1.8: a Remarkable Oxygen-Rich Supernova Remnant

Details G292.0+1.8: a Remarkable Oxygen-Rich Supernova Remnant G292.0+1.8: a Remarkable Oxygen-Rich Supernova Remnant

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop..264g&link_type=abstract

Chandra Proposal ID #01500055

Computer Science

Chandra Proposal Id #01500055

Scientific paper

G292.0+1.8, one of the radio-brightest supernova remnants (SNRs) in the sky, has a shell-type exterior with a plerionic core. Optical high-velocity O- and Ne-rich filaments are seen near the center. The X-ray morphology is also composite with a large barlike structure bisecting the shell. The X-ray spectrum shows both a non-equilibrium ionized plasma with excess metal abundances expected from a 25 solar mass progenitor, and a hard power-law component likely associated with the central synchrotron nebula. This ACIS image will elucidate the spatial distribution of elemental excesses, study dynamics of the X-ray bar with Doppler shifts, and confirm the presence of a nonthermal nebula.

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