HIGH-ENERGY NEUTRINO EMISSION FROM WHITE DWARF MERGERS
HIGH-ENERGY NEUTRINO EMISSION FROM WHITE DWARF MERGERS
复制标题
白矮星合并产生的高能中微子发射
DOI:
10.3847/0004-637x/832/1/20
复制
发表时间:
2016-08
影响因子:
4.9
通讯作者:
Dai Zi-Gao
中科院分区:
文献类型:
--
作者:
Xiao Di;Meszaros Peter;Murase Kohta;Dai Zi-Gao
The merger of two white dwarfs is expected to result in a central fast-rotating core surrounded by a debris disk, in which magnetorotational instabilities give rise to a hot magnetized corona and a magnetized outflow. The dissipation of magnetic energy via reconnection could lead to the acceleration of cosmic-rays (CRs) in the expanding material, which would result in high energy neutrinos. We discuss the possibility of using these neutrino signals as probes of the outflow dynamics, magnetic energy dissipation rate, and CR acceleration efficiency. Importantly, the accompanying high-energy gamma-rays are absorbed within these sources because of the large optical depth, so these neutrino sources can be regarded as hidden cosmic-ray accelerators that are consistent with the non-detection of gamma-rays with Fermi-LAT. While the CR generation rate is highly uncertain, if it reaches , the diffuse neutrino flux could contribute a substantial fraction of the IceCube observations. We also evaluate the prospect of observing individual merger events, which provides a means for testing such sources in the future.
登录
查看更多内容
影响因子:
4.9
作者:
Xiao Di;Meszaros Peter;Murase Kohta;Dai Zi-Gao
通讯作者:
Dai Zi-Gao
影响因子:
6.5
作者:
G. Nelemans;L. Yungelson;S. P. Zwart;F. Verbunt
通讯作者:
G. Nelemans;L. Yungelson;S. P. Zwart;F. Verbunt
DOI:
10.1088/0004-637x/800/1/7
发表时间:
2014-11
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Neeleman;J. Prochaska;A. Wolfe
通讯作者:
M. Neeleman;J. Prochaska;A. Wolfe
DOI:
10.1111/j.1365-2966.2011.19747.x
发表时间:
2011-05
影响因子:
4.8
作者:
B. Metzger
通讯作者:
B. Metzger
影响因子:
6.4
作者:
A. Loeb;E. Waxman
通讯作者:
A. Loeb;E. Waxman