20.500.12556/RUNG-5562-01e1da41-d027-7be6-5b37-2a2760f40969
Search for Axionlike-Particle-Induced Prompt γ -Ray Emission from Extragalactic Core-Collapse Supernovae with the Fermi Large Area Telescope
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.
darn matter
axions
axion-like particles
core-collapse supernovae
true
true
false
Angleški jezik
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Delo ni kategorizirano
2020-06-11 16:46:34
2020-06-15 03:35:30
2023-06-09 03:39:15
0000-00-00 00:00:00
2020
0
0
7
124
23
2020
0000-00-00
PostprintKoncna
NiDoloceno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
19315459
10.1103/PhysRevLett.124.231101
URN:SI:UNG:REP:PMCTVWMJ
SNALPs-2.pdf
SNALPs-2.pdf
1
C0CA17374BAD6AD9943964213933C6DF
cc1595837504728f0d556de7d1c41838caf90ee091e2250f1500f1fbee76b39a
8f4b2398-05cf-11ee-9c48-5ef991fed68f
https://repozitorij.ung.si/Dokument.php?lang=slv&id=20147
Univerza v Novi Gorici
0
0
0