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XMM-Newton observations of the microquasars GRO J1655-40 and GRS 1915+105

Gloria Sala·Jochen Greiner·Frank Haberl·Eckhard Kendziorra·Konrad Dennerl·Michael Freyberg·Günther Hasinger
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Abstract

We present results of a sequence of XMM-Newton observations of the two microquasars GRO J1655-40 and GRS 1915+105. The observations were preformed using the EPIC-pn camera in the Burst mode. The observations of GRO J1655-40 in a bright state have made possible a substantial improvement in the calibration of the Burst mode, with determination of the rate dependence of the Charge Transfer Efficiency (CTE). We detect He-like Fe K-shell absorption features in the EPIC-pn spectrum of GRO J1655-40, indicating the presence of a highly ionized absorber, and clear absorption features at 0.71 and 0.72 keV in the RGS spectrum, most probably identified as blueshifted Fe XVIII.

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Gloria Sala, Jochen Greiner, Frank Haberl, Eckhard Kendziorra, Konrad Dennerl, Michael Freyberg, Günther Hasinger. 2005-11-28. XMM-Newton observations of the microquasars GRO J1655-40 and GRS 1915+105. https://arxiv.org/abs/astro-ph/0511762

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