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Predictions of Gamma-Ray Emission from Globular Cluster Millisecond Pulsars Above 100 MeV
Ist Teil von
The Astrophysical journal, 2009-05, Vol.696 (1), p.L52-L55
Ort / Verlag
IOP Publishing
Erscheinungsjahr
2009
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
The recent Fermi detection of the globular cluster (GC) 47 Tucanae highlighted the importance of modeling collective gamma-ray emission of millisecond pulsars (MSPs) in GCs. Steady flux from such populations is also expected in the very high energy domain covered by ground-based Cherenkov telescopes. We present pulsed curvature radiation (CR) as well as unpulsed inverse Compton (IC) calculations for an ensemble of MSPs in the GCs 47 Tucanae and Terzan 5. We demonstrate that the CR from these GCs should be easily detectable for Fermi, while constraints on the total number of MSPs and the nebular B-field may be derived using the IC flux components.