利用费米大面积望远镜搜寻河外核心坍缩超新星中轴子类粒子诱导的瞬发伽马射线发射。

Search for Axionlike-Particle-Induced Prompt γ-Ray Emission from Extragalactic Core-Collapse Supernovae with the Fermi Large Area Telescope.

作者信息

Meyer Manuel, Petrushevska Tanja

机构信息

Erlangen Centre for Astroparticle Physics, University of Erlangen-Nuremberg, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany and W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, California 94305, USA.

Centre for Astrophysics and Cosmology, University of Nova Gorica, Vipavska 11c, 5270 Ajdovščina, Slovenia.

出版信息

Phys Rev Lett. 2020 Jun 12;124(23):231101. doi: 10.1103/PhysRevLett.124.231101.

DOI:10.1103/PhysRevLett.124.231101

PMID:32603156

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 m_{a}≲3×10^{-10} eV, improving previous limits from SN1987A by a factor of 2.

摘要

在核心坍缩超新星（SN）爆发期间，类轴子粒子（ALP）可通过普里马科夫过程产生，随后在银河系磁场中转化为γ射线。利用费米大面积望远镜（LAT）对河外超新星进行观测时，我们并未找到此类γ射线暴的证据。超新星爆发时间是根据光学光变曲线估算得出的，我们发现LAT在核心坍缩时刻观测到至少一颗超新星的概率约为90%。在假设LAT视场内至少包含一颗超新星的情况下，对于质量(m_{a}\lesssim3×10^{-10}) eV的ALP，我们排除了光子 - ALP耦合(≳2.6×10^{-12}) GeV(^{-1})的情况，比之前来自超新星1987A的限制提高了一倍。