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- W94121996 abstract "The recurrent nova RS Ophiuchi was detected at quiescence by the Rosat PSPC, with net count rate 0.0104 ± 0.0015 cts s −1 . The counts, stronglg peaked around 1 KeV, were not detected below 0.5 KeV. The best spectral fits of an optically thin model of thermal plasma in the admitted range of N H imply a temperature 1.1-1.3 KeV and flux 1.6-3.4 × 10 −13 ergs cm −2 s −1 , corresponding to a soft X-rays luminosity L x ≃ 2.8 × 10 31 -1.64 × 10 32 erg s −1 . This poses strong constraints on the models proposed for the system. It can be ruled out that the X-ray flux is due to ongoing hydrogen burning. If it is emitted by the boundary layer of an accretion disk around a high mass white dwarf, the mass accretion rate ia M < 10 −9 M ○ . yr −1 , not sufficiently high to power a thermonuclear runaway on the surface of a white dwarf every ≃ 20 yrs" @default.
- W94121996 created "2016-06-24" @default.
- W94121996 creator A5001258048 @default.
- W94121996 date "1993-07-01" @default.
- W94121996 modified "2023-10-16" @default.
- W94121996 title "The ROSAT detection of RS Ophiuchi at quiescence." @default.
- W94121996 hasPublicationYear "1993" @default.
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