Long-term spectral study of the black hole Cygnus X-1 using INTEGRAL
Cangemi F, Beuchert T, Siegert T, Grinberg V, Wilms J, Rodriguez J, Kreykenbohm I, Laurent P, Pottschmidt K (2019)
Publication Type: Conference contribution
Publication year: 2019
Publisher: Societa Astronomica Italiana
Book Volume: 90
Pages Range: 191-195
Conference Proceedings Title: Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society
Event location: Geneva, CHE
Abstract
We utilize the joint capabilities of IBIS and SPI to perform a state-resolved 20-2000 keV analysis of the microquasar Cygnus X-1. In both LHS and HSS, the spectral analysis reveals the presence of a high-energy tail above 400 keV in addition to a standard, Compton-like continuum in the 20-400 keV range. We study the polarisation properties of the hard X-ray radiation, as well as of the polarisation of this high-energy tail. Polarisation is detected in the LHS in agreement with previous work. We find potential variations of the LHS polarisation with time and no polarisation detection in the HSS.
Authors with CRIS profile
Jörn Wilms
Professur für Astronomie und Astrophysik
Ingo Kreykenbohm
Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut
Involved external institutions
University of Amsterdam
Netherlands (NL)
University of California, San Diego
United States (USA) (US)
Eberhard Karls Universität Tübingen
Germany (DE)
Université Paris-Saclay
France (FR)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
France (FR)
National Aeronautics and Space Administration (NASA)
United States (USA) (US)
Netherlands (NL)
University of California, San Diego
United States (USA) (US)
Eberhard Karls Universität Tübingen
Germany (DE)
Université Paris-Saclay
France (FR)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
France (FR)
National Aeronautics and Space Administration (NASA)
United States (USA) (US)
How to cite
APA:
Cangemi, F., Beuchert, T., Siegert, T., Grinberg, V., Wilms, J., Rodriguez, J.,... Pottschmidt, K. (2019). Long-term spectral study of the black hole Cygnus X-1 using INTEGRAL. In Carlo Ferrigno, Enrico Bozzo, Peter von Ballmoos (Eds.), Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society (pp. 191-195). Geneva, CHE: Societa Astronomica Italiana.
MLA:
Cangemi, F., et al. "Long-term spectral study of the black hole Cygnus X-1 using INTEGRAL." Proceedings of the 12th INTEGRAL Conference and 1st AHEAD Gamma-Ray Workshop: INTEGRAL Looks AHEAD to Multi-Messenger Astronomy, Geneva, CHE Ed. Carlo Ferrigno, Enrico Bozzo, Peter von Ballmoos, Societa Astronomica Italiana, 2019. 191-195.
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