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浏览/检索结果: 共32条，第1-10条 帮助

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Listening for dark photon radio signals from the Galactic Center 期刊论文  OAI收割
PHYSICAL REVIEW D, 2023, 卷号: 107, 期号: 11, 页码: 115035
作者:  Hardy, Edward;  Song, Ningqiang
  |  收藏  |  浏览/下载：7/0  |  提交时间：2023/12/07
The correlations between optical/UV broad lines and X-ray emission for a large sample of quasars 期刊论文  OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 卷号: 492, 期号: 1, 页码: 719-741
作者:  Timlin, John D., II;  Brandt, W. N.;  Ni, Q.;  Luo, B.;  Pu, Xingting
  |  收藏  |  浏览/下载：64/0  |  提交时间：2020/03/31
Probing the dynamical state, baryon content, and multiphase nature of galaxy clusters with bright background QSOs 期刊论文  OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2018, 卷号: 481, 期号: 3, 页码: 4111-4122
作者:  Ge, Chong;  Wang, Q. Daniel;  Burchett, Joseph N.;  Tripp, Todd M.;  Sun, Ming
  |  收藏  |  浏览/下载：72/0  |  提交时间：2019/04/08
A New Set of Parameters of High-Mass X-ray Binaries Found with their Cyclotron Lines 期刊论文  OAI收割
arXiv e-prints, 2018
作者:  Zhang, Chengmin;  Taani, Ali;  Chaty, Sylvain;  Karino, Shigeyuki;  Song, Liming
  |  收藏  |  浏览/下载：89/0  |  提交时间：2019/07/12
Astrophysics - High Energy Astrophysical Phenomena  Abstract: We have derived new physical quantities for several High-Mass X-ray Binaries (HMXBs) with supergiant (SG) companions through their cyclotron lines. The parameters are: the terminal velocity of the wind, the mass loss rate of the donor, the effective temperature and the magnetic fields. These parameters influence significantly the improvement of the model of accretion. In spite of the variety of their observational properties, the corresponding magnetic field is around B ~ 10^12 G. This result can be constrained by the effects on stellar evolution. In addition, we have performed a segmentation in the parameter space of donors intended for several SG-HMXB listed in our sample set. The parameter space can be categorized into five regimes depending on the possibility of disk formation associated with accretion from the stellar wind. This can give a quantitative clarification of the observed variability and the properties of these objects. We show that, when these systems come into the direct accretion region, systems with corresponding parameters can emit X-rays.  
Joint fit of Warm Absorbers in COS and HETG spectra of NGC 3783 期刊论文  OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2017, 卷号: 17, 期号: 9, 页码: 10
作者:  Fu, Xiao-Dan;  Zhang, Shui-Nai;  Sun, Wei;  Niu, Shu;  Ji, Li
  |  收藏  |  浏览/下载：24/0  |  提交时间：2019/04/08
Joint fit of Warm Absorbers in COS and HETG spectra of NGC 3783 期刊论文  OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2017, 卷号: 17, 期号: 9
作者:  Fu, Xiao-Dan;  Zhang, Shui-Nai;  Sun, Wei;  Niu, Shu;  Ji, Li
  |  收藏  |  浏览/下载：26/0  |  提交时间：2019/05/23
Properties of the Narrow Line Seyfert 1 Galaxies Revisited 期刊论文  OAI收割
International Journal of Astronomy and Astrophysics, 2016, 卷号: 6, 期号: 2, 页码: 166-174
作者:  Su, R.;  Liu, X.;  Yang, P.;  Zhang, Z.
  |  收藏  |  浏览/下载：21/0  |  提交时间：2017/06/11
A DIRECT LINKAGE BETWEEN AGN OUTFLOWS IN THE NARROW-LINE REGIONS AND THE X-RAY EMISSION FROM THE ACCRETION DISKS 期刊论文  OAI收割
ASTRONOMICAL JOURNAL, 2016, 卷号: 151, 期号: 3
作者:  Wang, J.;  Xu, D. W.;  Wei, J. Y.
收藏  |  浏览/下载：15/0  |  提交时间：2016/11/04
Probabilities of magnetic reconnection encounter at different activity levels in the Earth's magnetotail 期刊论文  OAI收割
ADVANCES IN SPACE RESEARCH, 2015, 卷号: 56, 期号: 4, 页码: 736-741
作者:  Zhang, L. Q.;  Lui, A. T. Y.;  Baumjohann, W.;  Wang, J. Y.
收藏  |  浏览/下载：26/0  |  提交时间：2015/09/28
BBFs  X-lines  Substorm  SMC  
Distance and evolutionary state of the supernova remnant G18.1-0.1 期刊论文  OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 卷号: 438, 期号: 2, 页码: 1813-1819
作者:  Leahy, Denis;  Green, Kaylie;  Tian, Wenwu
收藏  |  浏览/下载：22/0  |  提交时间：2016/11/30