The gamma-ray sources in classical novae
The gamma-ray sources in classical novae
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经典新星中的伽马射线源
DOI：
10.1007/s10509-016-2863-4
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发表时间：
2016
影响因子：
1.9
通讯作者：
Lu Guoliang
中科院分区：
文献类型：
--
作者：
Sun Weichao;Zhu Chunhua;Wang Zhaojun;Lu Guoliang
基于扩散激波加速（DSA）机制，研究了新星喷出物与新星系统周围吸积盘或环双星（CB）盘的相互作用。结果表明，新星喷出物和CB盘之间的相互作用最有可能产生射线。轻子和强子的情况下，可以可行地产生CB磁盘中的射线。计算了一个网格，讨论了经典新星（CNe）中的-射线源，结果表明，白色矮星的质量和CNe的轨道周期对-射线的产生有很大的影响。根据所提出的网格和综合布居方法，估算了当激波区磁场强度为0.005 ~ 0.02G时，轻子态情况下CNe产生γ射线的百分比约为0.17%~ 51%.射线CNe在星系中的出现率约为。在强子情况下，相应的百分比范围从大约64%到97%，而射线CNe的出现率在星系中的范围从大约。
The interaction between novae ejecta and accretion disks or circumbinary (CB) disks surrounding nova systems based on the diffusive shock acceleration (DSA) mechanism are investigated. Results suggest that interaction between the novae ejecta and CB disks most probably produce-rays. Both leptonic and hadronic scenarios can feasibly produce-rays in CB disks. A grid is calculated in order to discuss the-ray sources in classical novae (CNe), and results indicated that the mass of a white dwarf and the orbit period in CNe can greatly affect the production of-rays. According to the proposed grid and synthesis population method, it is estimated that the percentage of CNe that can produce-rays ranges from approximately 0.17 % to 51 % for leptonic scenarios when the magnetic field strength in the shock region ranges from 0.005 G to 0.02 G. The occurrence rate of-ray CNe ranges from approximatelyin the galaxy. The corresponding percentage ranges from approximately 64 % to 97 % in hadronic scenarios, while the occurrence rate of-ray CNe ranges from approximatelyin the galaxy.