Does GRS 1915+105 exhibit "canonical" black-hole states?

Details Does GRS 1915+105 exhibit "canonical" black-hole states? Does GRS 1915+105 exhibit "canonical" black-hole states?

2003-09-10

arxiv.org/abs/astro-ph/0309283v1

Astron.Astrophys.412:229-234,2003

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20031388

We have analysed RXTE data of the superluminal source GRS 1915+105 in order to investigate if, despite its extreme variability, it also exhibits the canonical source states that characterise other black-hole candidates. The phenomenology of GRS 1915+105 has been described in terms of three states (named A, B and C) based on their hardness ratios and position in the colour-colour diagram. We have investigated the connection between these states and the canonical behaviour and found that the shape of the power spectral continuum and the values of the best-fit model parameters to the noise components in all three states indicate that the source shows properties similar to the canonical very high state.

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