{ "id": "0908.3077", "version": "v1", "published": "2009-08-21T09:09:06.000Z", "updated": "2009-08-21T09:09:06.000Z", "title": "Black-hole binaries: life begins at 40 keV", "authors": [ "Tomaso M. Belloni", "Sara Motta" ], "comment": "Proc. \"Simbol-X: Focusing on the Hard X-Ray Universe\", Paris, 2-5 Dec. 2008, ed. J. Rodriguez and P. Ferrando; 4 pages, 3 figures", "categories": [ "astro-ph.HE" ], "abstract": "In the study of black-hole transients, an important problem that still needs to be answered is how the high-energy part of the spectrum evolves from the low-hard to the high-soft state, given that they have very different properties. Recent results obtained with RXTE and INTEGRAL have given inconsistent results. With RXTE, we have found that the high-energy cutoff in GX 339-4 during the transition first decreases (during the low-hard state), then increases again across the Hard-Intermediate state, to become unmeasurable in the soft states (possibly because of statistical limitations). We show Simbol-X will be able to determine the spectral shape with superb accuracy. As the high-energy part of the spectrum is relatively less known than the one below 20 keV, Simbol-X will provide important results that will help out understanding of the extreme physical conditions in the vicinity of a stellar-mass black hole.", "revisions": [ { "version": "v1", "updated": "2009-08-21T09:09:06.000Z" } ], "analyses": { "subjects": [ "98.62.Js", "95.85.Nv", "95.85.-e", "98.52.-b" ], "keywords": [ "life begins", "black-hole binaries", "high-energy part", "transition first decreases", "stellar-mass black hole" ], "tags": [ "journal article" ], "publication": { "doi": "10.1063/1.3149408" }, "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable", "inspire": 829244, "adsabs": "2009AIPC.1126..185B" } } }