A Multi-Wavelength Investigation of the Unidentified Gamma-Ray Source HESS J1708-410

Abstract

We report on recent XMM-Newton observations, archival radio continuum and CO data, and SED modeling of the unidentified Galactic plane source HESS J1708-410. No significant extended X-ray emission is observed, and we place an upper limit of 3.2 x 10{-13} erg cm{-2} s{-1} in the 2-4 keV range for the region of TeV emission. Molonglo Galactic Plane Survey data is used to place an upper limit of 0.27 Jy at 843 MHz for the source, with a 2.4 GHz limit of 0.4 Jy from the Parkes survey of the southern Galactic plane. 12CO (J 1->0) data of this region indicates a plausible distance of 3 kpc for HESS J1708-410. SED modeling of both the H.E.S.S. detection and flux upper limits offer useful constraints on the emission mechanisms, magnetic field, injection spectrum, and ambient medium surrounding this source.

16 pages, 5 figures, accepted to The Astrophysical Journal

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Cited by in corpus (3)

• The H.E.S.S. Galactic plane survey
• Deep GMRT radio observations and a multi-wavelength study of the region around HESS J1858+020
• Ancient Pulsar Wind Nebulae as a natural explanation for unidentified gamma-ray sources