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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/27062
Title: An atlas of exotic variability in IGR J17091-3624: a comparison with GRS 1915+105
Authors: Court, J. M. C.
Altamirano, D.
Pereyra, M.
Boon, C. M.
Yamaoka, K.
BELLONI, Tomaso Maria Melchiorre 
Wijnands, R.
Pahari, M.
Issue Date: 2017
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 468
Issue: 4
First Page: 4748
Abstract: We performed an analysis of all Rossi X-ray Timing Explorer observations of the low-mass X-ray binary (LMXB) and black hole candidate IGR J17091-3624 during the 2011-2013 outburst of the source. By creating light curves, hardness-intensity diagrams and power density spectra of each observation, we have created a set of nine variability 'classes' that phenomenologically describe the range of types of variability seen in this object. We compare our set of variability classes to those established by Belloni et al. to describe the similar behaviour of the LMXB GRS 1915+105, finding that some types of variability seen in IGR J17091-3624 are not represented in data of GRS 1915+105. We also use all available X-ray data of the 2011-2013 outburst of IGR J17091-3624 to analyse its long-term evolution, presenting the first detection of IGR J17091-3624 above 150 keV as well as noting the presence of 're-flares' during the later stages of the outburst. Using our results, we place new constraints on the mass and distance of the object, and find that it accretes at ≲33 per cent of its Eddington limit. As such, we conclude that Eddington-limited accretion can no longer be considered a sufficient or necessary criterion for GRS 1915+105-like variability to occur in LMXBs.
URI: http://hdl.handle.net/20.500.12386/27062
URL: https://academic.oup.com/mnras/article/468/4/4748/3092383
ISSN: 0035-8711
DOI: 10.1093/mnras/stx773
Bibcode ADS: 2017MNRAS.468.4748C
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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