Progress Toward Reproducing the GeV Galactic Center Excess Using CALET Data

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ICRC2025613.pdf (1.27 MB)

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https://pos.sissa.it/501/613/

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https://doi.org/10.22323/1.501.0613
 http://hdl.handle.net/11603/40730

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UMBC Faculty Collection
UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)

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Date

2025-09-23

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conference papers and proceedings
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Citation of Original Publication

Coleman, Audrey, Wolfgang V. Zober, Michela Negro, Nicholas W. Cannady, and Brian Rauch. “Progress Toward Reproducing the GeV Galactic Center Excess Using CALET Data.” Proceedings of 39th International Cosmic Ray Conference — PoS(ICRC2025) 501 (September 2025): 613. https://doi.org/10.22323/1.501.0613.

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

The Calorimetric Electron Telescope (CALET) currently has more than nine years of high-energy 𝛾-ray data that has not been fully explored. A region of particular interest for 𝛾-ray astronomy is the Galactic Center (GC). Analysis of Fermi Large Area Telescope (LAT) data shows an excess of GeV 𝛾 rays from the GC region that could possibly be explained by the annihilation of weakly interacting massive particles (WIMPs) or an unresolved population of millisecond pulsars. Here we present the analysis of the Crab and Geminga using FermiPy and progress toward analysis of the Galactic Center using CALET data.