A Half-Megasecond Chandra Observation of the Oxygen-rich Supernova Remnant G292.0+1.8

Details A Half-Megasecond Chandra Observation of the Oxygen-rich Supernova Remnant G292.0+1.8 A Half-Megasecond Chandra Observation of the Oxygen-rich Supernova Remnant G292.0+1.8

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe..21l&link_type=abstract

Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo

Computer Science

Supernova Remnants

Scientific paper

Our Chandra Large Project of the Galactic O-rich SNR G292.0+1.8 is one of the highlights for the core-collapse SNR studies in the 10-yr legacy of Chandra. We review the early results and report on the recent progress on our analysis of a deep 510 ks Chandra observation. G292.0+1.8 is a textbook example of remnants of core-collapse super novae, harboring a pulsar (J1124-5916) and a pulsar wind nebula, the reverse-shocked metal-rich ejecta material, and the shocked circumstellar wind. The X-ray characteristics of the shocked circumstellar wind shows that the progenitor star had experienced a massive mass loss during its late-stage evolution. A highly nonuniform distribution of thermodynamic conditions of the X-ray-emitting ejecta features suggest that the explosion was likely aspherical. We further reveal spectacular substructures of a torus, a jet, and an extended central compact nebula, all associated with the embedded pulsar. The observation shows a consistent picture of late-stage evolution of massive star, where it loses a significant amount of its initial mass as stellar wind and undergoes an aspheric explosion to leave a neutron star with high spatial velocity.

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