Monte Carlo simulations of a diffusive shock with multiple scattering angular distributions

	Monte Carlo simulations of a diffusive shock with multiple scattering angular distributions
	Wang, X.; Yan, Y. H.
刊名	ASTRONOMY & ASTROPHYSICS
	2011
卷号	530 页码:A92
关键词	acceleration of particles methods: numerical shock waves
ISSN号	0004-6361
通讯作者	Wang, X (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Activ, Beijing 100012, Peoples R China.
中文摘要	Aims. We independently develop a simulation code following the previous dynamical Monte Carlo simulation of the diffusive shock acceleration under the isotropic scattering law during the scattering process, and the same results are obtained. Methods. Since the same results test the validity of the dynamical Monte Carlo method for simulating a collisionless shock, we extend the simulation toward including an anisotropic scattering law for further developing this dynamical Monte Carlo simulation. Under this extended anisotropic scattering law, a Gaussian distribution function is used to describe the variation of scattering angles in the particle's local frame. Results. As a result, we obtain a series of different shock structures and evolutions in terms of the standard deviation values of the given Gaussian scattering angular distributions. Conclusions. We find that the total energy spectral index increases as the standard deviation value of the scattering angular distribution increases, but the subshock's energy spectral index decreases as the standard deviation value of the scattering angular distribution increases.
英文摘要	Aims. We independently develop a simulation code following the previous dynamical Monte Carlo simulation of the diffusive shock acceleration under the isotropic scattering law during the scattering process, and the same results are obtained. Methods. Since the same results test the validity of the dynamical Monte Carlo method for simulating a collisionless shock, we extend the simulation toward including an anisotropic scattering law for further developing this dynamical Monte Carlo simulation. Under this extended anisotropic scattering law, a Gaussian distribution function is used to describe the variation of scattering angles in the particle's local frame. Results. As a result, we obtain a series of different shock structures and evolutions in terms of the standard deviation values of the given Gaussian scattering angular distributions. Conclusions. We find that the total energy spectral index increases as the standard deviation value of the scattering angular distribution increases, but the subshock's energy spectral index decreases as the standard deviation value of the scattering angular distribution increases.
学科主题	空间物理
收录类别	SCI ; EI
资助信息	CAS-NSFC [10778605]; NSFC [10921303]; MOST [2011CB811401]
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/3132]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Wang, X.,Yan, Y. H.. Monte Carlo simulations of a diffusive shock with multiple scattering angular distributions[J]. ASTRONOMY & ASTROPHYSICS,2011,530:A92.
APA	Wang, X.,&Yan, Y. H..(2011).Monte Carlo simulations of a diffusive shock with multiple scattering angular distributions.ASTRONOMY & ASTROPHYSICS,530,A92.
MLA	Wang, X.,et al."Monte Carlo simulations of a diffusive shock with multiple scattering angular distributions".ASTRONOMY & ASTROPHYSICS 530(2011):A92.