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30th International Cosmic Ray Conference - ICRC'07, Merida : Mexique (2007)
Discovery of TeV Gamma-Ray Emission in the W28 Region from HESS Observations, and Multiwavelength Comparisons
G. Rowell, E. Brion1, O. Reimer, F. Aharonian, P. Goret1, A. Djannati-Ataï2, Y. Moriguchi, Y. Fukui
HESS Collaboration(s)

H.E.S.S. observations of the old-age (more than 10000 yrs; about 0.5 deg diameter) composite SNR W28 reveal TeV emission situated at its northeastern and southern boundaries. The northeastern TeV source is in an area where W28 is interacting with a dense molecular cloud, containing OH masers, local radio and X-ray peaks. The southern TeV sources are found in a region occupied by several HII regions, including the ultra- compact HII region W28-A2. Our analysis of NANTEN CO data also reveals a dense molecular cloud enveloping this southern region. Further details concerning H.E.S.S., NANTEN, and other multiwavelength results will be presented at the conference.
1 :  DAPNIA - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée
2 :  APC - UMR 7164 - AstroParticule et Cosmologie
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

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

Planète et Univers/Astrophysique