Preprint

PUBDB-2025-00523

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png NuSTAR Bounds on Radiatively Decaying Particles from M82

Candón, F. R. (Corresponding author) ; Fiorillo, D. F. G.Extern*DESY* ; Lucente, G. ; Vitagliano, E. ; Vogel, J. K.

2024

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Report No.: arXiv:2412.03660

Abstract: Axions and other putative feebly interacting particles (FIPs) with a mass of tens to several hundreds of keVs can be produced in stellar cores with a Lorentz boost factor $E_a/m_a\lesssim 10$. Thus, starburst galaxies such as M82 are efficient factories of slow axions. Their decay $a\rightarrow\gamma\gamma$ would produce a large flux of X-ray photons, peaking around $100$ keV and spread around the galaxy by an angle that can be relatively large. We use observations of the Nuclear Spectroscopic Telescope Array (NuSTAR) mission to show that the absence of these features can constrain $30-500$ keV axion masses into uncharted regions for axion-photon coupling of $g_{a\gamma}\sim 10^{-10}-10^{-12}\,\rm GeV^{-1}$. Our argument can be applied to other heavy FIPs and astrophysical sources that are hot enough to produce them, yet cold enough to avoid large boost factors which slow down the decay.

Note: 4 pages, 3 figures, plus Supplemental Material

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Contributing Institute(s):

1. Theoretische Astroteilchenphysik (Z_THAT)

Research Program(s):

1. 613 - Matter and Radiation from the Universe (POF4-613) (POF4-613)
2. INTERACTIONS - NBIA INTERACTIONS POSTDOCTORAL PROGRAMME (847523) (847523)
3. HIDDeN - Hunting Invisibles: Dark sectors, Dark matter and Neutrinos (860881) (860881)

Experiment(s):

1. No specific instrument

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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 Candón, F. R. ; Fiorillo, D. F. G. ; Lucente, G. ; Vitagliano, E. ; Vogel, J. K.
NuSTAR Bounds on Radiatively Decaying Particles from M82
Physical review letters 134(17), 171004 (2025) [10.1103/PhysRevLett.134.171004]2025     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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