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Discovery of VHE gamma-ray emission from the direction of the globular cluster Terzan 5

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons30416

Domainko,  Wilfried
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30378

Clapson,  André-Claude
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Volltexte (frei zugänglich)

1112.4974.zip
(Preprint), 136KB

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Zitation

Domainko, W., Clapson, A.-C., Brun, F., Eger, P., Jamrozy, M., Dyrda, M., et al. (2011). Discovery of VHE gamma-ray emission from the direction of the globular cluster Terzan 5. In ICRC2013. Retrieved from http://arxiv.org/abs/1112.4974.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0014-BF98-B
Zusammenfassung
Globular clusters are old stellar systems which exhibit very-high stellar densities in their cores. The globular cluster Terzan 5 is characterized by a high stellar encounter rate and hosts the largest detected population of millisecond pulsars. It also features bright GeV gamma-ray emission and extended X-ray radiation. However, no globular clusters have been detected in very-high-energy gamma rays (VHE, E> 100 GeV) so far. In order to investigate this possibility Terzan 5 has been observed with the H.E.S.S. telescope array in this energy band. The discovery of a source of VHE gamma rays from the direction of this globular cluster will be reported. The results of the VHE analysis and a multi-wavelength view of Terzan 5 will be presented in this contribution. No counterpart or model can fully explain the observed morphology of the detected VHE gamma-ray source.