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.2075s&link_type=abstract

Chandra Proposal ID #07308240, p.1

Physics

Chandra Proposal Id #07308240

Scientific paper

RS Oph is a Symbiotic Recurrent Nova that was last seen in outburst in 1985 It was observed by EXOSAT. It's outburst commenced on Jan. 26 (IAUC 4030, 4031, 4036). EXOSAT observed RS Oph between 18h00 and 23h00 UT on 1985 Mar. 22. Preliminary analysis indicated that the x-ray spectrum was soft and absorbed. Fits to a thermal bremsstrahlung model yielded a temperature of 0.75 keV and an absorbing column density of ~ 10**21 atoms cm**-2. The flux at Earth in the 0.1-6.0-keV band was estimated to be 4 x 10**-10 erg cm-**2 s**-1. This was taken from an IAU Circular by Cordova and Mason in 1985. It has an extremely rapid decline in Xrays which are probably caused by a shock moving through a red giant atmosphere.

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