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On the source of QPO of the black hole candidate GRS1915+105: some new observations and their interpretation

Anuj Nandi·Sivakumar G. Manickam·A. R. Rao·Sandip K. Chakrabarti
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Abstract

A few classes of the light curve of the black hole candidate GRS 1915+105 have been analyzed in detail. We discover that unlike the previous findings, QPOs occasionally occur even in the so-called `On' or softer states. Such findings may require a revision of the accretion/wind scenario of the black hole candidates. We conjecture that considerable winds which is produced in `Off' states, cool down due to Comptonization, and falls back to the disk and creating an excess accretion rate to produce the so-called `On' state. After the drainage of the excess matter, the disk goes back to the `Off' state. Our findings strengthen the shock oscillation model for QPOs.

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Anuj Nandi, Sivakumar G. Manickam, A. R. Rao, Sandip K. Chakrabarti. 2000-12-29. On the source of QPO of the black hole candidate GRS1915+105: some new observations and their interpretation. https://doi.org/10.1046/j.1365-8711.2001.04339.x

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