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GMRT observations of H.E.S.S. sources

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2009_ASPCS_407_349.pdf (143.86 KB)

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2009-09

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Astronomical Society of the Pacific

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Abstract

We have observed 4 VHE gamma-ray sources discovered by the High Energy Stereoscopic System (H.E.S.S.) with the Giant Metrewave Radio Telescope (GMRT). The sources viz., HESS J1813-178, HESS J1825-137, HESS J1834-087, and HESS J1837-069 were observed simultaneously at 0.61 and 0.235 GHz and at 1.28 GHz. Resolved source counterparts for 3 of these were detected at all the three frequencies. None was detected for HESS J1825-137. We investigate the consistent multiwavelength behaviour of these sources and plausible gamma-ray emission mechanisms.

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Open Access. Proceedings of the conference held 8-12 December 2008, at National Centre for Radio Astrophysics (NCRA), TIFR, Pune, India. Edited by D. J. Saikia, D. A. Green, Y. Gupta, and T. Venturi. San Francisco: Astronomical Society of the Pacific.

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ASP Conference Series, 2009, Vol.407, p349

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http://hdl.handle.net/2289/4145

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2009 Astronomical Society of the Pacific.