The γ-ray sources in classical novae

被引：0
|
作者：
Sun, Weichao [1 ]
Zhu, Chunhua [1 ]
Wang, Zhaojun [1 ]
Lu, Guoliang [1 ]
机构：
[1] Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China
来源：
ASTROPHYSICS AND SPACE SCIENCE | 2016年 / 361卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Acceleration of particles; Binaries: close; Gamma-rays: general; MASS-RATIO DISTRIBUTION; STELLAR EVOLUTION; SPECTROSCOPIC BINARIES; POPULATION SYNTHESIS; CIRCUMBINARY DISKS; RECURRENT NOVAE; SYMBIOTIC STARS; V407; CYGNI; SYSTEMS; EMISSION;
D O I：
10.1007/s10509-016-2863-4
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 gamma-rays. Both leptonic and hadronic scenarios can feasibly produce gamma-rays in CB disks. A grid is calculated in order to discuss the gamma-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 gamma-rays. According to the proposed grid and synthesis population method, it is estimated that the percentage of CNe that can produce gamma-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 gamma-ray CNe ranges from approximately 1 yr(-1) to 27 yr(-1) in the galaxy. The corresponding percentage ranges from approximately 64 % to 97 % in hadronic scenarios, while the occurrence rate of gamma-ray CNe ranges from approximately 35 yr(-1) to 52 yr(-1) in the galaxy.
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页数：8
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