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Investigating gamma-ray fluxes from globular clusters
- Publication Year :
- 2016
- Publisher :
- SAIP, 2016.
-
Abstract
- Globular clusters are large collections of old stars that are orbiting the core of a galaxy. Our Milky Way Galaxy has about 160 known clusters, with perhaps more to be discovered. We first accumulated the necessary parameters for 16 clusters and ran a numerical model that predicts the inverse Compton gamma-ray flux expected from each cluster. We also reanalysed data from 16 clusters observed by the H.E.S.S. very-high-energy (>100 GeV) gamma-ray telescopes. We confirmed the detection of Terzan 5 and found flux upper limits for the remaining 15 sources that were consistent with published results. We attempted to constrain some source parameters using X-ray and gamma-ray data. We lastly list the five most promising clusters for future observations by the Cherenkov Telescope Array
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.od......1399..c4c3ae66a41a5272e80e2982656ca39f