Reading Between The Lines: The Evolution Of The Hard Continuum Emission in RS Oph Observed With Chandra and XMM-Newton

Details Reading Between The Lines: The Evolution Of The Hard Continuum Emission in RS Oph Observed With Chandra and XMM-Newton Reading Between The Lines: The Evolution Of The Hard Continuum Emission in RS Oph Observed With Chandra and XMM-Newton

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.4102n&link_type=abstract

American Astronomical Society Meeting 210, #41.02; Bulletin of the American Astronomical Society, Vol. 39, p.155

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Scientific paper

The 6th outburst of the recurrent nova RS Oph started with a spectacular shock induced by the expanding ejecta moving into the stellar wind of the companion giant. The radiation produced by this shock was observed in X-rays, and the best spectral resolution was achieved with the gratings aboard Chandra and XMM-Newton. These spectra consist of continuum plus emission lines. We modeled the pure continuum emission with isothermal Bremsstrahlung continua, while excluding the emission lines, which is only possible with Chandra and XMM-Newton grating spectra.
JUN is generously supported by a Chandra Fellowship; Any opinions, findings, and conclusions or recommendations expressed in this article are those of the authors and do not necessarily reflect the views of SAO or NASA.

Evolution of model parameters

day	log(T/K)	log(VEM/cm-3)	NH(1021cm-2)	chi^2
13.9	7.51±0.02	58.16±0.01	5.14±0.03	2.11
26.1	6.73±0.03	58.48±0.03	5.0±0.06	2.3
111.7	6.44±0.04	57.22±0.08	2.4(fixed)	0.2
205.4	6.45±0.03	56.48±0.04	2.4(fixed)	0.40
204-208	6.28±0.12	56.71±0.32	2.4(fixed)	1.36
239.2	6.39±0.04	56.35±0.12	2.4(fixed)	0.52

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