| Title: | Search for Axionlike-Particle-Induced Prompt γ -Ray Emission from Extragalactic Core-Collapse Supernovae with the Fermi Large Area Telescope |
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| Authors: | ID Meyer, Manuel, Erlangen Centre for Astroparticle Physics, University of Erlangen-Nuremberg, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany (Author)
ID Petrushevska, Tanja (Author) |
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| Files: |  SNALPs-2.pdf (30,47 MB)
MD5: C0CA17374BAD6AD9943964213933C6DF
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| Language: | English |
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| Work type: | Not categorized |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | During a core-collapse supernova (SN), axionlike particles (ALPs) could be produced through the Primakoff process and subsequently convert into γ rays in the magnetic field of the Milky Way. We do not find evidence for such a γ-ray burst in observations of extragalactic SNe with the Fermi Large Area Telescope (LAT). The SN explosion times are estimated from optical light curves and we find a probability of about ∼90% that the LAT observed at least one SN at the time of the core collapse. Under the assumption that at least one SN was contained within the LAT field of view, we exclude photon-ALP couplings ≳2.6×10−12 GeV−1 for ALP masses ma≲3×10−10 eV, improving previous limits from SN1987A by a factor of 2. |
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| Keywords: | darn matter, axions, axion-like particles, core-collapse supernovae |
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| Publication version: | Author Accepted Manuscript |
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| Year of publishing: | 2020 |
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| Number of pages: | 7 |
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| Numbering: | 23, 124 |
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| PID: | 20.500.12556/RUNG-5562-01e1da41-d027-7be6-5b37-2a2760f40969  |
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| COBISS.SI-ID: | 19315459 |
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| DOI: | 10.1103/PhysRevLett.124.231101 |
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| NUK URN: | URN:SI:UNG:REP:PMCTVWMJ |
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| Publication date in RUNG: | 15.06.2020 |
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| Views: | 2538 |
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| Downloads: | 77 |
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