Small Progenitors, Large Couplings: Type Ic Supernova Constraints on Radiatively Decaying Particles
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866911209833365504 |
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| author | Candón, Francisco R. Fiorillo, Damiano F. G. Janka, Hans-Thomas van Baal, Bart F. A. Vitagliano, Edoardo |
| author_facet | Candón, Francisco R. Fiorillo, Damiano F. G. Janka, Hans-Thomas van Baal, Bart F. A. Vitagliano, Edoardo |
| contents | Supernova (SN) 1987A is a celebrated laboratory in searches for gamma-ray flashes produced by the radiative decay of sub-GeV particles such as axion-like particles (ALPs), sterile neutrinos, and novel gauge bosons. At large couplings, however, particles decay rapidly inside the stellar envelope, which results in a suppression of the signal. Focusing on the prototypical example of ALPs with a photon coupling, we show that core-collapse SNe of Type Ic are much less affected by this attenuation, thanks to the compactness of their progenitors ensuing from the loss of their envelope. While Fermi-LAT may miss the brief gamma-ray flash from a single Type Ic SN, their high rate allows for a statistical approach: by stacking many events, we can obtain constraints that significantly surpass those from SN 1987A at large couplings. Our approach can be extended to any feebly interacting particle featuring a decay channel into photons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_18253 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Small Progenitors, Large Couplings: Type Ic Supernova Constraints on Radiatively Decaying Particles Candón, Francisco R. Fiorillo, Damiano F. G. Janka, Hans-Thomas van Baal, Bart F. A. Vitagliano, Edoardo High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Supernova (SN) 1987A is a celebrated laboratory in searches for gamma-ray flashes produced by the radiative decay of sub-GeV particles such as axion-like particles (ALPs), sterile neutrinos, and novel gauge bosons. At large couplings, however, particles decay rapidly inside the stellar envelope, which results in a suppression of the signal. Focusing on the prototypical example of ALPs with a photon coupling, we show that core-collapse SNe of Type Ic are much less affected by this attenuation, thanks to the compactness of their progenitors ensuing from the loss of their envelope. While Fermi-LAT may miss the brief gamma-ray flash from a single Type Ic SN, their high rate allows for a statistical approach: by stacking many events, we can obtain constraints that significantly surpass those from SN 1987A at large couplings. Our approach can be extended to any feebly interacting particle featuring a decay channel into photons. |
| title | Small Progenitors, Large Couplings: Type Ic Supernova Constraints on Radiatively Decaying Particles |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2509.18253 |