Abstract
We summarize the ASCA observations of the two Galactic superluminal sources GRO J1655-40 and GRS 1915+105, focusing on the absorption line features. The high spectroscopic capability of ASCA enabled us to detect iron-K absorption line features from both objects. This is direct evidence for the presence of highly ionized plasma in a non-spherical configuration around a black hole, and is considered to be a unique signature of superluminal jet systems. The candidate of the line-absorber would be a part of an accretion disk at a distance of 109–11 cm from the central X-ray source.
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Yamaoka, K. et al. (2001). ASCA Observations of the Galactic Superluminal Sources GRO J1655-40 and GRS 1915+105. In: Castro-Tirado, A.J., Greiner, J., Paredes, J.M. (eds) Microquasars. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0700-9_4
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DOI: https://doi.org/10.1007/978-94-010-0700-9_4
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