Bibcode
Bradley, Charles K.; Hynes, R. I.; Kong, A. K.; Casares, J.; Charles, P.; Fender, R.; Gallo, E.; Garcia, M. R.; Haswell, C. A.; Robinson, E. L.; Rupen, M. R.; Shahbaz, T.; Zurita, C.
Referencia bibliográfica
American Astronomical Society, HEAD meeting #9, #1.72; Bulletin of the American Astronomical Society, Vol. 38, p.340
Fecha de publicación:
9
2006
Número de citas
0
Número de citas referidas
0
Descripción
We present a new 40ks XMM observation of the black hole X-ray nova V404
Cyg in quiescence. Its quiescent spectra can be best fitted by a
power-law with slope Gamma 2 as found previously. V404 Cyg was roughly
equal in luminosity compared to the previous observation of Chandra with
variability of a factor of 4 during the observation. We find no evidence
for the presence of iron fluorescent emission, nor emission from more
highly ionized states and discuss constraints this presents upon the
accretion flow geometry. This research was supported by the XMM-Newton
Guest Observer Program.