Preprint

PUBDB-2025-04685

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Diffuse Continuum Emission and Large Extended Sources at MeV Energies

Ackermann, M. (Corresponding author)DESY* ; Malyshev, D. ; Malyshev, D. V.

2025

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Report No.: arXiv:2510.07311

Abstract: Future $\gamma$ -ray survey instruments, such as COSI, newASTROGAM and AMEGO-X, will significantly improve previous and current all-sky surveys at MeV energies. In this paper we discuss the continuum emission from the Milky Way, two prominent large extended sources, the Fermi bubbles and Loop I, and the extragalactic $\gamma$ -ray background. We highlight the importance of measurements in the MeV to GeV energy range for understanding CR production and propagation in the Galaxy, for the determination of the nature of the Fermi bubbles and Loop I, and for exploring the origin of the extragalactic \gamma -ray background.

Keyword(s): Diffuse gamma-ray emission ; MeV gamma rays

Note: 27 pages, 5 figures, part of the 'Unveiling the MeV Universe in the Multi-Messenger Era' collection in Space Science Reviews

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Contributing Institute(s):

1. Gammaastronomie (Z_GA)
2. Neutrinoastronomie / Kosmologie (Z_NA)

Research Program(s):

1. 613 - Matter and Radiation from the Universe (POF4-613) (POF4-613)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2025

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Database coverage:
Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Ackermann, M. (Corresponding author)DESY* ; Malyshev, D. ; Malyshev, D.
Diffuse continuum emission and large extended sources at MeV energies
Space science reviews 221(7), 92 (2025) [10.1007/s11214-025-01215-0]2025     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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