THE 2010 MAY FLARING EPISODE OF CYGNUS X-3 IN RADIO, X-RAYS, AND gamma-RAYS

Williams PKG, Tomsick JA, Bodaghee A, Bower GC, Pooley GG, Pottschmidt K, Rodriguez J, Wilms J, Migliari S, Trushkin SA (2011)

Publication Status: Published

Publication Type: Journal article

Publication year: 2011

Journal

Astrophysical Journal Letters American Astronomical Society

Publisher: IOP PUBLISHING LTD

Book Volume: 733

Article Number: ARTN L20

Journal Issue: 2

DOI: 10.1088/2041-8205/733/2/20

Abstract

In 2009, Cygnus X-3 (Cyg X-3) became the first microquasar to be detected in the GeV gamma-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 gamma-ray observations of Cyg X-3 made during a flaring episode in 2010 May. We detect a similar to 3 day softening and recovery of the X-ray emission, followed almost immediately by a similar to 1 Jy radio flare at 15 GHz, followed by a 4.3 sigma gamma-ray flare (E > 100 MeV) similar to 1.5 days later. The radio sampling is sparse, but we use archival data to argue that it is unlikely the gamma-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 gamma-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 gamma-ray emission from Cyg X-3.

Authors with CRIS profile

Jörn Wilms Professur für Astronomie und Astrophysik

Involved external institutions

University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot FR France (FR) University of Maryland US United States (USA) (US) University of Cambridge GB United Kingdom (GB) University of California, Berkeley US United States (USA) (US) Russian Academy of Sciences / Росси́йская акаде́мия нау́к (RAS) RU Russian Federation (RU) Universitat de Barcelona (UB) / University of Barcelona ES Spain (ES)

How to cite

APA:

Williams, P.K.G., Tomsick, J.A., Bodaghee, A., Bower, G.C., Pooley, G.G., Pottschmidt, K.,... Trushkin, S.A. (2011). THE 2010 MAY FLARING EPISODE OF CYGNUS X-3 IN RADIO, X-RAYS, AND gamma-RAYS. Astrophysical Journal Letters, 733(2). https://doi.org/10.1088/2041-8205/733/2/20

MLA:

Williams, Peter K. G., et al. "THE 2010 MAY FLARING EPISODE OF CYGNUS X-3 IN RADIO, X-RAYS, AND gamma-RAYS." Astrophysical Journal Letters 733.2 (2011).

BibTeX: Download