發(fā)布時(shí)間：2018-06-18 14:14

  本文選題：accretion + accretion��； 參考：《Research in Astronomy and Astrophysics》2015年12期

【摘要】：We investigate the effects of a global magnetic field on the dynamics of an ensemble of clumps within a magnetized advection-dominated accretion flow by ignoring interactions between the clumps and then solving the collisionless Boltzman equation.In the strong-coupling limit,in which the averaged radial and rotational velocities of the clumps follow dynamics described by an Advection-Dominated Accretion Flow(ADAF),the root mean square radial velocity of the clumps is calculated analytically for different magnetic field configurations.The value of the root mean square radial velocity of the clumps increases by increasing the strength of the radial or vertical components of the magnetic field,but a purely toroidal magnetic field geometry leads to a reduction in the value of the root mean square radial velocity of the clumps in the inner parts by increasing the strength of this component.Moreover,dynamics of the clumps strongly depend on the amount of advected energy so that the value of the root mean square radial velocity of the clumps increases in the presence of a global magnetic field as the flow becomes more advective.
[Abstract]:We investigate the effects of a global magnetic field on the dynamics of an ensemble of clumps within a magnetized advection-dominated accretion flow by ignoring interactions between the clumps and then solving the collisionless Boltzman equation.In the strong-coupling limit,in which the averaged radial and rotational velocities of the clumps follow dynamics described by an Advection-Dominated Accretion Flow(ADAF),the root mean square radial velocity of the clumps is calculated analytically for different magnetic field configurations.The value of the root mean square radial velocity of the clumps increases by increasing the strength of the radial or vertical components of the magnetic field,but a purely toroidal magnetic field geometry leads to a reduction in the value of the root mean square radial velocity of the clumps in the inner parts by increasing the strength of this component.Moreover,dynamics of the clumps strongly depend on the amount of advected energy so that the value of the root mean square radial velocity of the clumps increases in the presence of a global magnetic field as the flow becomes more advective.
【作者單位】： Department
【分類號(hào)】：P145.8;P157

【相似文獻(xiàn)】

中國期刊全文數(shù)據(jù)庫 前10條

1 ;Effects of radial velocity on line profiles and images from the standard thin disk[J];Science China(Physics,Mechanics & Astronomy);2010年01期

2 ;Mathematical model of wave transformation over radial sand ridge field on continental shelf of South Yellow Sea[J];Water Science and Engineering;2010年01期

3 朱孟周;莊革;王之江;潘垣;;Intermittency of the density fluctuations and its influence on the radial transport in the boundary of J-TEXT[J];Chinese Physics B;2011年02期

4 鐘俊晴;安世忠;姚紅娟;張?zhí)炀?畢遠(yuǎn)杰;;Influence of radial magnetic field on emittance in the median plane at CYCIAE-100[J];中國物理C;2009年S2期

5 胡業(yè)民;胡希偉;何勇;;Axial Shock in a Cylindrical Plasma with Current[J];Plasma Science and Technology;2006年05期

6 ;TWO NEW OPHIURANS FROM THE GULF OF BEIBUWAN[J];海洋與湖沼;1982年06期

7 Hai-Feng Peng;Kai Yang;Xiao-Wei Gao;;Element nodal computation-based radial integration BEM for non-homogeneous problems[J];Acta Mechanica Sinica;2013年03期

8 崔明姬,郭春泰,李潔,唐定驤;STRUCTURAL ANALYSIS OF MOLTEN LiF-KCI BY X-RAY DIFFRACTION[J];Chinese Science Bulletin;1991年22期

9 柳兆榮,李惜惜;ON ANALYSIS OF SPHYGMOGRAM[J];Science in China,Ser.B;1982年12期

10 REME H;DANDOURAS I;LUCEK E;DUNLOP M;;The radial evolution of earthward BBFs during substorm[J];Science China(Earth Sciences);2010年10期

中國重要會(huì)議論文全文數(shù)據(jù)庫 前4條

1 ;Symmetry energy and isospin effects of threshold energy of radial flow in heavy ion collisions[A];第十三屆全國核物理大會(huì)暨第八屆會(huì)員代表大會(huì)論文摘要集[C];2007年

2 ;Beam combination of a radial laser array: Hermite-Gaussian model[A];湖北省激光學(xué)會(huì)論文集[C];2000年

3 ZHOU Guo-hua;WU gang;CHEN shi-yong;QIN yong-nian;CHEN ming-quan;;Anatomy study of the forearm radial artery perfect flap[A];中華醫(yī)學(xué)會(huì)第10屆全國顯微外科學(xué)術(shù)會(huì)議暨世界首例斷肢再植成功50周年慶典論文集[C];2013年

4 Jifu Nong;;Conditions for Radial Basis Function Neural networks to Universal Approximation and Numerical Experiments[A];第25屆中國控制與決策會(huì)議論文集[C];2013年

，

本文編號(hào)：2035761