The radio counterpart of the likely TeV binary HESS J0632+057

Skilton JL, Pandey-Pommier M, Hinton JA, Cheung CC, Aharonian FA, Brucker J, Dubus G, Fiasson A, Funk S, Gallant Y, Marcowith A, Reimer O (2009)

Publication Type: Journal article

Publication year: 2009

Journal

Monthly Notices of the Royal Astronomical Society Oxford University Press

Book Volume: 399

Pages Range: 317-322

Journal Issue: 1

DOI: 10.1111/j.1365-2966.2009.15272.x

Abstract

The few known gamma-ray binary systems are all associated with variable radio and X-ray emission. The TeV source HESS J0632+057, apparently associated with the Be star MWC 148, is plausibly I new member of this class. Following the identification of a variable X-ray counterpart to the TeV source we conducted Giant Metrewave Radio Telescope (GMRT) and Very Large Array (VLA) observations in 2008 June-September to search for the radio counterpart of this object. A point-like radio source at the position of the star is detected in both 1280-MHz GMRT and 5-GHz VLA observations, with an average spectral index, alpha, of similar to 0.6. In the VLA data there is significant flux variability oil similar to month time-scales around the mean flux density of approximate to 0.3 mJy. These radio properties (and the overall spectral energy distribution) are consistent with an interpretation of HESS J0632+057 as a lower power analogue of the established gamma-ray binary systems.

Authors with CRIS profile

Julia Brucker Lehrstuhl für Physik Stefan Funk

Involved external institutions

University of Leeds GB United Kingdom (GB) Leiden University NL Netherlands (NL) National Aeronautics and Space Administration (NASA) US United States (USA) (US) Dublin Institute for Advanced Studies (DIAS) IE Ireland (IE) Université Joseph Fourier (UJF Grenoble 1) FR France (FR) University of Montpellier / Université Montpellier FR France (FR) Stanford National Accelerator Laboratory (SLAC) US United States (USA) (US)

How to cite

APA:

Skilton, J.L., Pandey-Pommier, M., Hinton, J.A., Cheung, C.C., Aharonian, F.A., Brucker, J.,... Reimer, O. (2009). The radio counterpart of the likely TeV binary HESS J0632+057. Monthly Notices of the Royal Astronomical Society, 399(1), 317-322. https://doi.org/10.1111/j.1365-2966.2009.15272.x

MLA:

Skilton, J. L., et al. "The radio counterpart of the likely TeV binary HESS J0632+057." Monthly Notices of the Royal Astronomical Society 399.1 (2009): 317-322.

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