文献类型：期刊文献

英文题名：Radiation and energy release in a background field of axion-like dark matter

作者：Liao, Wei[1]

机构：[1]East China Univ Sci & Technol, Sch Sci, Inst Modern Phys, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：772

起止页码：708

外文期刊名：PHYSICS LETTERS B

收录：;EI(收录号：20200010662);WOS:【SCI-EXPANDED(收录号:WOS:000411369700100)】；

基金：This work is supported by National Science Foundation of China (NSFC), grant No. 11375065, and Shanghai Key Laboratory of Particle Physics and Cosmology, grant No. 15DZ2272100. I would like to thank ITP CAS Beijing for the hospitality during the course of this work.

语种：英文

外文关键词：Dark Matter - Energy transfer - Galaxies - Radiation

摘要：We find that a fuzzy dark matter background and the mG scale magnetic field in the galactic center can give rise to a radiation with a very large energy release. The frequency of the radiation field is the same as the frequency of the oscillating axion-like background field. We show that there is an energy transfer between the fuzzy dark matter sector and the electromagnetic sector because of the presence of the generated radiation field and the galactic magnetic field. The energy release rate of radiation is found to be very slow in comparison with the energy of fuzzy dark matter but could be significant comparing with the energy of galactic magnetic field in the source region. Using this example, we show that the fuzzy dark matter together with a large scale magnetic field is possible to give rise to fruitful physics. (C) 2017 The Author(s). Published by Elsevier B.V.