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          Institute: MPI für Kernphysik     Collection: High-Energy Astrophysics     Display Documents



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ID: 519218.0, MPI für Kernphysik / High-Energy Astrophysics
H.E.S.S. observations of massive stellar clusters
Authors:Ohm, Stefan; Horns, Dieter; Reimer, Olaf; Hinton, Jim; Rowell, Gavin; Wilhelmi, Emma O.; Fernandes, Milton V.; Acero, Fabian; Marcowith, A.
Language:English
Publisher:Astronomical Society of the Pacific
Place of Publication:San Francisco
Date of Publication (YYYY-MM-DD):2010-05
Title of Proceedings:High Energy Phenomena in Massive Stars
Start Page:265
End Page:275
Title of Series:ASP Conference Series, High Energy Phenomena in Massive Stars
Volume (in Series):422
Name of Conference/Meeting:High Energy Phenomena in Massive Stars
Place of Conference/Meeting:Jaén, Spain
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
2009-02-02
End Date of Conference/Meeting 
 (YYYY-MM-DD):
2009-02-05
Copyright:© Copyright 1988 - 2010 - Astronomical Society of the Pacific
Review Status:not specified
Audience:Experts Only
Abstract / Description:Stellar clusters are potential acceleration sites of very-high-energy (VHE, E > 100GeV) particles since they host supernova remnants (SNRs) and pulsar wind nebulae (PWNe). Additionally, in stellar clusters, particles can also be accelerated e.g. at the boundaries of wind-blown bubbles, in colliding wind zones in massive binary systems or in the framework of collective wind or wind/supernova(SN) ejecta scenarios. Motivated by the detection of VHE γ-ray emission towards Westerlund 2 and assuming similar particle acceleration mechanisms at work, Westerlund 1 is an even more promising target for VHE γ-ray observations given that massive star content and distance are more favorable for detectable VHE γ-ray emission compared to Westerlund 2. Here, H.E.S.S. observations of massive stellar clusters in general with special emphasis on the most massive stellar cluster in the galaxy, Westerlund 1 are summarized.
Free Keywords:Hess
External Publication Status:published
Document Type:Conference-Paper
Affiliations:MPI für Kernphysik/Group of W. Hofmann/Experimental High-Energy Astrophysics (M. Panter, G. Hermann)
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