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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:77/0  |  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.  
Thermal Desorption Low Temperature Plasma Ionization Mass Spectrometry for Rapid and Sensitive Detection of Pesticides in Broomcorn 期刊论文  OAI收割
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY, 2017, 卷号: 45, 期号: 2, 页码: 175-181
作者:  
Li Hai-Yang;  Wang Shuang;  Wang Zhe;  Hou Ke-Yong
  |  收藏  |  浏览/下载:32/0  |  提交时间:2019/06/20
Application of graphene in analytical sample preparation 期刊论文  OAI收割
Chemistry, 2012, 卷号: 37, 期号: 1, 页码: 1-11
Liu, Qian; Shi, Jianbo; Jiang, Guibin
收藏  |  浏览/下载:36/0  |  提交时间:2014/11/27
Lysophosphatidylcholine Biomarkers of Lung Cancer Detected by Ultra-performance Liquid Chromatography Coupled with Quadrupole Time-of-flight Mass Spectrometry 期刊论文  OAI收割
chemical research in chinese universities, 2011, 卷号: 27, 期号: 5, 页码: 750-755
作者:  
Dong Jun;  Cai Xiao-ming;  Zou Li-juan;  Chen Cheng;  Xue Xing-ya
收藏  |  浏览/下载:24/0  |  提交时间:2015/11/12
Ethanol outperforms multiple solvents in the extraction of chlorophyll-a from biological soil crusts 期刊论文  OAI收割
SOIL BIOLOGY & BIOCHEMISTRY, 2011, 卷号: 43, 期号: 4, 页码: 857-861
作者:  
Lan, Shubin;  Wu, Li;  Zhang, Delu;  Hu, Chunxiang;  Liu, Yongding
收藏  |  浏览/下载:79/17  |  提交时间:2011/06/30
硕士论文-J/ψ衰变到2(pai+pai-)°p和2(K+K-)终态的强衰变研究 学位论文  OAI收割
硕士, 北京: 中国科学院研究生院, 1991
作者:  
陈少敏
收藏  |  浏览/下载:24/0  |  提交时间:2015/10/12
The  J/Ψ  hadronic  decays  involving  2(π+π-)π°and  2(K+K-)  final  states  are  investigated  by  using  the  sample  of  2.5  *  10~6  J/Ψ's  which  were  obtained  from  the  BES  detector  at  BEPC  in  the  first  half  of  1990.  Some  signals  such  as  ω(782)  φ(1020)  f2(1270)  f2'(1525)  θ/f2(1720)  b1(1235)  and  a2(1320)  have  been  found  and  measured  the  mass  width  and  branching  fraction  of  reasonance  states.  The  results  are  agreement  with  the  world  average  values.  The  ratio  of  Br(J/Ψ    ω  f2(1270))/Br(J/Ψ→ρ°a2°)  shows  that  doubly  OZI  violating  effects  play  a  role  in  the  J/Ψ    ω  f2(1270)  f2(1270)    π+π-  are  given  in  the  first  time:  x  =  0.99  ±  0.29  Y  =  -0.24  ±  0.17  Z1  =  0.90  ±  0.57  Z2  =  0.56  ±  0.22.