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http://hdl.handle.net/20.500.12386/27916
Title: | Fast multi-wavelength broad-band and QPO variability in a black hole X-ray binary: accretion flow and/or a jet origin? | Authors: | Kalamkar, M. CASELLA, Piergiorgio O'Brien, K. Uttley, P. Maccarone, T. |
Issue Date: | 2015 | Volume: | The Extremes of Black Hole Accretion | First Page: | 39 | Abstract: | Fast variability in X-ray binaries has been studied for many decades, which is associated with accretion flows (in X-rays) and recently confirmed from jets (at least in the infra-red band). I will present results of observations of a black hole X-ray binary in hard state with simultaneous coverage in X-ray, optical and infra-red bands. A Quasi Periodic Oscillation (QPO) is detected for the first time in infra-red. Interestingly, the QPO is also detected in optical and the frequency in both these bands is half the frequency of the QPO in X-rays (classified as type-C) in the broad 0.3-60 keV range. The infra-red power spectrum also exhibits broad-band noise similar to the X-ray power spectrum and is correlated. Hence, we see strong correlated variability in the emission from the accretion disk, corona/hot flow and the jet. With the known origin of X-ray variability in accretion flows, I will discuss if this can manifest itself in jets providing a mechanism for jet variability in the framework of existing models (e.g., Ingram & Done 2011, Veledina et al. 2013, Drappeau et al. 2015). This will provide strong constraints on the structure and geometry of these systems and insight into their disk-jet coupling. <P /> | Conference Name: | XMM-Newton 2015 Science Workshop | Conference Place: | Madrid, Spain | Conference Date: | 8-10 June, 2015 | URI: | http://hdl.handle.net/20.500.12386/27916 | URL: | https://www.cosmos.esa.int/web/xmm-newton/2015-workshop/#proceedings | Bibcode ADS: | 2015ebha.confE..39K | Fulltext: | open |
Appears in Collections: | 4.09 Prodotti multimediali |
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