Probing light dark matter through cosmic-ray cooling in active galactic nuclei

被引:5
作者
Herrera, Gonzalo [1 ,2 ]
Murase, Kohta [3 ,4 ,5 ,6 ]
机构
[1] Tech Univ Munich, Phys Dept, James Franck Str, D-85748 Garching, Germany
[2] Werner Heisenberg Inst, Max Planck Inst Phys, Fohringer Ring 6, D-80805 Munich, Germany
[3] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
[4] Penn State Univ, Inst Gravitat & Cosmos, Ctr Multimessenger Astrophys, Dept Astron & Astrophys, University Pk, PA 16802 USA
[5] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA
[6] Kyoto Univ, Yukawa Inst Theoret Phys, Ctr Gravitat Phys & Quantum Informat, Kyoto, Kyoto 6068502, Japan
基金
美国国家科学基金会;
关键词
HIGH-ENERGY NEUTRINO; TXS 0506+056; BLACK-HOLES; GALAXIES; EMISSION; GROWTH; ORIGIN;
D O I
10.1103/PhysRevD.110.L011701
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Recent observations of high-energy neutrinos from active galactic nuclei (AGN), NGC 1068 and TXS 0506 + 056, suggest that cosmic rays (CRs) are accelerated in the vicinity of the central supermassive black hole and high-energy protons and electrons can cool efficiently via interactions with ambient photons and gas. The dark matter density may be significantly enhanced near the black hole, and CRs could lose energies predominantly due to scatterings with the ambient dark matter particles. We propose CR cooling in AGN as a new probe of dark matter-proton and dark matter-electron scatterings. Under plausible astrophysical assumptions, our constraints on sub-GeV dark matter can be the strongest derived to date. Some of the parameter space favored by thermal light dark matter models might already be probed with current multimessenger observations of AGN.
引用
收藏
页数:8
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