On the nature of HESS J1503-582 revealed by the H.E.S.S. experiment: Coincidence with a FVW?

Details On the nature of HESS J1503-582 revealed by the H.E.S.S. experiment: Coincidence with a FVW? On the nature of HESS J1503-582 revealed by the H.E.S.S. experiment: Coincidence with a FVW?

2008-11-10

arxiv.org/abs/0811.1552v1

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, Submitted to Proceedings of "4th Heidelberg International Symposium on High Energy Gamma-Ray Astronomy 200

Scientific paper

10.1063/1.3076660

The H.E.S.S. survey of the inner Galaxy in the very-high-energy gamma-ray domain has led to the discovery of many extended sources, some of which do not appear to be associated with any obvious counterpart at traditional wavelengths (radio, infrared and X-ray). In this contribution, preliminary H.E.S.S. results on one of these so-called "dark" sources, namely HESS J1503-582, are presented. After introducing the properties of this source candidate, results of the search for counterparts in several astronomical windows are shown. Finally, its possible association with a "Forbidden-Velocity-Wing", a characteristic 21 cm HI line structure that appears as a deviation from the canonical Galactic rotation curve, is discussed.

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