VHE gamma-ray observations of transient and variable stellar objects with the MAGIC telescopes
Abstract
Galactic transients, X-ray and gamma-ray binaries provide a proper environment for particle acceleration. This leads to the production of gamma rays with energies reaching the GeV-TeV regime. MAGIC has carried out deep observations of different transient and variable stellar objects of which we highlight 4 of them here: LSI+61 303, MWC 656, Cygnus X-1 and SN 2014J. We present the results of those observations, including long-term monitoring of Cygnus X-1 and LSI+61 303 (7 and 8 years, respectively). The former is one of the brightest X-ray sources and best studied microquasars across a broad range of wavelengths, whose steady and variable signal was studied by MAGIC within a multiwavelength scenario. The latest results of an unique object, MWC 656, are also shown in this presentation. This source is the first high-mass X-ray binary system detected that is composed of a black hole and a Be star. Finally, we report on the observations of SN 2014J, the nearest Type Ia SN of the last 40 years. Its proximity and early observation gave a remarkable opportunity to study important features of these powerful events.
- Publication:
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34th International Cosmic Ray Conference (ICRC2015)
- Pub Date:
- July 2015
- DOI:
- 10.22323/1.236.0732
- arXiv:
- arXiv:1510.03101
- Bibcode:
- 2015ICRC...34..732F
- Keywords:
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- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- Proceedings of the 34th International Cosmic Ray Conference, 30 July- 6 August, 2015, The Hague, The Netherlands, 8 pages, 3 figures