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Galactic center GeV excess and classification of Fermi-LAT sources with machine learning
- Publication Year :
- 2024
-
Abstract
- Excess of gamma rays with a spherical morphology around the Galactic center (GC) observed in the Fermi large area telescope (LAT) data is one of the most intriguing features in the gamma-ray sky. The excess has been interpreted by annihilating dark matter as well as emission from a population of unresolved millisecond pulsars (MSPs). We use a multi-class classification of Fermi-LAT sources with machine learning to study the distribution of MSP-like sources among unassociated Fermi-LAT sources near the GC. We find that the source count distribution of MSP-like sources is comparable with the MSP explanation of the GC excess.<br />Comment: contribution to the 2024 Very High Energy Phenomena in the Universe session of the 58th Rencontres de Moriond, 4 pages, 2 figures
- Subjects :
- Astrophysics - High Energy Astrophysical Phenomena
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2406.03990
- Document Type :
- Working Paper