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30th International Cosmic Ray Conference - ICRC'07, Merida : Mexique (2007)
H.E.S.S. VHE Gamma-ray sources without identified counterparts
K. Kosack, A. Djannati-Ataï1, A. Lemière1, E. Moulin2
HESS Collaboration(s)
(2008)

Scan-based observations of the Galactic plane and continuing re-observations of known very-high-energy (VHE) gamma-ray sources with the H.E.S.S. system of imaging atmospheric Cherenkov telescopes have revealed a wide variety of new VHE objects. While in many cases these objects can be associated with known sources in the X-ray, radio, or optical wavebands, a subset of them currently have no obvious cataloged lower-energy counterpart. Since at least weak X-ray and radio emission is predicted by most common VHE emission models, the lack of lower-energy detections may provide substantial model constraints and may even point to a new class of objects which emit primarily in the VHE energy range. An analysis of 8 such unidentified sources will be presented here, including a multi-wavelength discussion.
1 :  APC - UMR 7164 - AstroParticule et Cosmologie
2 :  LPTA - Laboratoire de Physique Théorique et Astroparticules
APC - AHE
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique