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GAPS contributions to the 38th International Cosmic Ray Conference (Nagoya 2023)
T. Aramaki, M. Boezio, S. E. Boggs +55
Compilation of papers presented by the GAPS Collaboration at the 38th International Cosmic Ray Conference (ICRC), held July 26 through August 3, 2023 in Nagoya, Japan.
Long-Exposure NuSTAR Constraints on Decaying Dark Matter in the Galactic Halo
Brandon M. Roach, Steven Rossland, Kenny C. Y. Ng +6
We present two complementary NuSTAR x-ray searches for keV-scale dark matter decaying to mono-energetic photons in the Milky Way halo. In the first, we utilize the known intensity…
Sensitivity of the GAPS Experiment to Low-energy Cosmic-ray Antiprotons
Field Rogers, Tsuguo Aramaki, Mirko Boezio +50
The General Antiparticle Spectrometer (GAPS) is an upcoming balloon mission to measure low-energy cosmic-ray antinuclei during at least three ~35-day Antarctic flights. With its la…
Betelgeuse Constraints on Coupling between Axion-like Particles and Electrons
Mengjiao Xiao, Pierluca Carenza, Maurizio Giannotti +4
Axion-like particles (ALPs) can be produced by thermal processes in a stellar interior, escape from the star and, if sufficiently light, be converted into photons in the external G…
New Constraints on Cosmic Particle Populations at the Galactic Center using X-ray Observations of the Molecular Cloud Sagittarius B2
Field Rogers, Shuo Zhang, Kerstin Perez +2
The Sagittarius B2 (Sgr B2) molecular cloud complex is an X-ray reflection nebula whose total emissions have continued to decrease since 2001 as it reprocesses one or more past ene…
NuSTAR measurement of the cosmic X-ray background in the 3-20 keV energy band
Roman Krivonos, Daniel Wik, Brian Grefenstette +5
We present measurements of the intensity of the Cosmic X-ray Background (CXB) with the NuSTAR telescope in the 3-20 keV energy range. Our method uses spatial modulation of the CXB…