First INTEGRAL and Swift observations of a giant outburst of A0535+26
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Author/Creator ORCID
Date
2012-03-29
Type of Work
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Citation of Original Publication
Caballero, I., S. Müller, P. Bordas, C. Ferrigno, M. Kühnel, K. Pottschmidt, P. Kretschmar, et al. “First INTEGRAL and Swift Observations of a Giant Outburst of A0535+26.” AIP Conference Proceedings 1427, no. 1 (March 29, 2012): 300–301. https://doi.org/10.1063/1.3696213.
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This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Caballero, I., S. Müller, P. Bordas, C. Ferrigno, M. Kühnel, K. Pottschmidt, P. Kretschmar, et al. “First INTEGRAL and Swift Observations of a Giant Outburst of A0535+26.” AIP Conference Proceedings 1427, no. 1 (March 29, 2012): 300–301. https://doi.org/10.1063/1.3696213. and may be found at https://doi.org/10.1063/1.3696213.
Subjects
Abstract
The Be/X-ray binary A0535+26 has shown three giant outbursts since 2005, after a long period of quiescence. The giant outbursts in 2005 (~5.2 Crab, 15-50 keV range) and 2009 (~5.6 Crab) could not be observed by most X-ray observatories due to Sun observing constraints. Finally, a giant outburst in February 2011, that reached a flux of ~3.8 Crab, was monitored with INTEGRAL and Swift TOO observations. We present first results of these observations, with a special focus on the cyclotron lines present in the X-ray spectrum of the source.