An optically-thick disk wind in GRO J1655-40?

摘要: We revisited the unusual wind in GRO J1655-40 detected with Chandra 2005 April, using long-term RXTE X-ray data and simultaneous optical/near-infrared photometric data. This is most convincing case for magnetic driving black hole binaries, as it has an inferred launch radius which a factor of 10 smaller than thermal prediction. However, optical near-infrared fluxes monotonically increase around observation, whereas flux decreases from days beforehand. Yet are outer, irradiated disk, so them to implies that X-rays likewise increased. applied new disk model multi-wavelength spectral energy distributions (SEDs). Fitting fluxes, we estimated intrinsic luminosity at epoch was > ~0.7 L_Edd, more one order magnitude larger observed luminosity. These results could be explained if Compton-thick, almost completely ionized gas present strong scattering reduced apparent The effects should then taken into account discussion wind-driving mechanism. Radiation pressure Compton heating may also contribute powering this high