Black hole X-ray binary IGR J17091-3624 shows a unique intensity variation pattern

Details Black hole X-ray binary IGR J17091-3624 shows a unique intensity variation pattern Black hole X-ray binary IGR J17091-3624 shows a unique intensity variation pattern

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3667....1p&link_type=abstract

The Astronomer's Telegram, #3667

Astronomy and Astrophysics

Astronomy

X-Ray, Binary, Black Hole, Transient

Scientific paper

IGR J17091-3624 is a black hole X-ray binary which showed variability similar to the 'rho'-type variability seen in the lightcurve of GRS 1915+105 in two periods of ~26 days (started on 14 March 2011) and ~39 days (started on 12 July 2011) respectively as observed with RXTE (ATel #3230, #3266, #3418, see arXiv1105.4694 for details). Apart from that, from the RXTE data we have found very prominent dips with time durations of 20 s - 30 s (for example, see lightcurves on 04 September 11, 28 August 11 etc.), and these dips, considering the rising and the decay parts, are very similar to the dips seen in the 'omega' class (Pahari and Pal, 2010, MNRAS, 409, 903) or 'theta' class (Belloni et al., 2000, A&A, 355, 271) of GRS 1915+105.

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