Relativistic Fe line emission and highly photoionized absorption in GRO J1655-40

Details Relativistic Fe line emission and highly photoionized absorption in GRO J1655-40 Relativistic Fe line emission and highly photoionized absorption in GRO J1655-40

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327.1008d&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 10, p.1008-1011

Astronomy and Astrophysics

Astronomy

X-Rays: Binaries, Accretion, Accretion Disks, X-Rays: Individual: Gro J1655-40

Scientific paper

We report on two XMM-Newton and simultaneous INTEGRAL observations of the microquasar GRO J1655-40 during its 2005 outburst. The source was most probably in its high-soft state during both observations. There is evidence for the presence of both a relativistically broadened Fe line providing strong support for the existence of a spinning black hole, and a highly photo-ionized absorber. The photo-ionized absorber is responsible for strong K absorption lines of Fe XXV and Fe XXVI in the EPIC pn spectra. The parameters of the highly-ionized absorber were different during the two observations. A less ionized absorber is present in the second observation, where the 0.5-200 keV luminosity of GRO J1655-40 decreased by around a half.

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