机构

• 紫金山天文台 [5]

采集方式

• OAI收割 [5]

内容类型

• 期刊论文 [5]

发表日期

• 2011 [1]
• 2009 [1]
• 2008 [2]
• 2000 [1]

学科主题

• Physics [5]

筛选

浏览/检索结果: 共5条，第1-5条 帮助 限定条件 学科主题：Physics    专题：紫金山天文台    第一署名单位    第一作者单位    通讯作者单位     条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择提交时间升序提交时间降序发表日期升序发表日期降序题名升序题名降序作者升序作者降序 SPACETIME VARIATION OF alpha AND THE CMB POWER SPECTRA AFTER THE RECOMBINATION 期刊论文  OAI收割 MODERN PHYSICS LETTERS A, 2011, 卷号: 26, 期号: 1, 页码: 43-52 作者:  Wang, Xiulian;  Li, Mingzhe 收藏  |  浏览/下载：11/0  |  提交时间：2012/08/07 Cosmology  cosmic microwave background  varying fine structure constant   Nucleon internal structure: a new set of quark, gluon momentum, angular momentum operators and parton distribution functions 期刊论文  OAI收割 CHINESE PHYSICS C, 2009, 卷号: 33, 期号: 12, 页码: 1197-1204 作者:  Wang Fan;  Chen Xiang-Song;  Lu Xiao-Fu;  Sun Wei-Min;  Goldman, T. 收藏  |  浏览/下载：14/0  |  提交时间：2011/12/08 nucleon internal structure  quark-gluon momentum and angular momentum  canonical communication relation  gauge invariance   Solitary kinetic Alfven waves in dusty plasmas 期刊论文  OAI收割 PHYSICS OF PLASMAS, 2008, 卷号: 15, 期号: 8, 页码: 083703 作者:  Li, Yang-fang;  Wu, D. J.;  Morfill, G. E. 收藏  |  浏览/下载：22/0  |  提交时间：2011/12/29 Solitary kinetic Alfven waves in dusty plasmas are studied by Considering the dust charge variation. The effect of the dust charge-to-mass ratio on the soliton solution is discussed. The Sagdeev potential is derived analytically with constant dust charge and then calculated numerically by taking the dust charge variation into account. We show that the dust charge-to-mass ratio plays an important role in the soliton properties. The soliton solutions are comprised of two branches. One branch is sub-Alfvenic and the soliton velocity is obviously smaller than the Alfven speed. The other branch is super-Alfvenic and the soliton velocity is very close to or greater than the Alfven speed. Both compressive and rarefactive solitons can exist. For the sub-Alfvenic branch  the rarefactive soliton is bell-shaped and it is much narrower than the compressive one. However  for the super-Alfvenic branch  the compressive soliton is bell-shaped and narrower  and the rarefactive one is broadened. When the charge-to-mass ratio of the dust grains is sufficiently high  the width of the rarefactive soliton  in the super-Alfvenic branch  will broaden extremely and a electron depletion will be observed. It is also shown that the bell-shaped soliton can transition to a cusped structure when the velocity is sufficiently high. (C) 2008 American Institute of Physics.   Rescaled bispectrum and the baryonic wiggles in bispectrum 期刊论文  OAI收割 RELATIVISTIC ASTROPHYSICS (AIP CONFERENCE PROCEEDINGS) , 2008, 卷号: 966, 页码: 107-113 Pan Jun 收藏  |  浏览/下载：82/0  |  提交时间：2011/12/30 LARGE-SCALE STRUCTURE  PROBING DARK ENERGY  POWER-SPECTRUM  NONLINEAR EVOLUTION  PERTURBATION-THEORY  REDSHIFT SURVEYS  HALO-MODEL  FLUCTUATIONS  SIMULATIONS  GALAXIES   Some new observing features of a solar radio spectral event on August 25, 1999 期刊论文  OAI收割 Chinese Physics Letters, 2000, 卷号: 17, 期号: 11, 页码: 850-852 Fu-Ying Xu; Yu-Ying Liu; Qi-Jun Yao; Qi-Jun Fu; Xuan Meng; Hong-Ao Wu 收藏  |  浏览/下载：13/0  |  提交时间：2013/02/01 ELECTRON-BEAMS  FINE-STRUCTURE  FLARE  EMISSION  BURSTS