CHANDRA Observations of RS Oph a Recurrent Symbiotic Nova in Outburst

Details CHANDRA Observations of RS Oph a Recurrent Symbiotic Nova in Outburst CHANDRA Observations of RS Oph a Recurrent Symbiotic Nova in Outburst

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.2079s&link_type=abstract

Chandra Proposal ID #07308242

Physics

Chandra Proposal Id #07308242

Scientific paper

RS Oph is a Symbiotic Recurrent Nova that was last seen in outburst in 1985. We have been monitoring its X-ray evolution with SWIFT and obtained a HETG spectrum on 26 February UT. The spectrum is well exposed although the 0th order is piled up. We are following a shock caused by material ejected from off a white dwarf and moving at speeds exceeding one thousand km/sec through the outer layers of a red giant. It is clearly bright enough for CHANDRA and is evolving rapidly as evidenced by our SWIFT observations. We will continue to obtain SWIFT observations (PI M. Bode) more often than the CHANDRA observations. T. O'Brien is doing hydrodynamic modeling of this outburst to better understand the evolution of the shock. The presence of emission lines will allow us to obtain abundances and the line profiles differ which suggests that the material has not been ejected spherically.

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