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Title: | The 2010 May Flaring Episode of Cygnus X-3 in Radio, X-rays, and γ-rays |
Author: | Williams, Peter K. G. Tomsick, John A. Bodaghee, Arash Bower, Geoffrey C. Pooley, G. Pottschmidt, Katja Rodriguez, Jérôme Wilms, Jörn Migliari, Simone Trushkin, Sergei A. |
Keywords: | Forats negres (Astronomia) Estels binaris de raigs X Jets (Astrofísica) Astrofísica Black holes (Astronomy) X-ray binaries Astrophysical jets Astrophysics |
Issue Date: | Jun-2011 |
Publisher: | Institute of Physics (IOP) |
Abstract: | In 2009, Cygnus X-3 (Cyg X-3) became the first microquasar to be detected in the GeV γ-ray regime, via the satellites Fermi and AGILE. The addition of this new band to the observational toolbox holds promise for building a more detailed understanding of the relativistic jets of this and other systems. We present a rich data set of radio, hard and soft X-ray, and γ-ray observations of Cyg X-3 made during a flaring episode in 2010 May. We detect a ~3 day softening and recovery of the X-ray emission, followed almost immediately by a ~1 Jy radio flare at 15 GHz, followed by a 4.3σ γ-ray flare (E > 100 MeV) ~1.5 days later. The radio sampling is sparse, but we use archival data to argue that it is unlikely the γ-ray flare was followed by any significant unobserved radio flares. In this case, the sequencing of the observed events is difficult to explain in a model in which the γ-ray emission is due to inverse Compton scattering of the companion star's radiation field. Our observations suggest that other mechanisms may also be responsible for γ-ray emission from Cyg X-3. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1088/2041-8205/733/2/L20 |
It is part of: | Astrophysical Journal, 2011, vol. 733, num. 2, p. 1-6 |
URI: | http://hdl.handle.net/2445/50795 |
Related resource: | http://dx.doi.org/10.1088/2041-8205/733/2/L20 |
ISSN: | 0004-637X |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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