In the past two years, many progresses have been made in magnetospheric physics by using the data of Double Star Program, Cluster, THEMIS and RBSP missions, or by computer simulations. This paper briefly reviews these...In the past two years, many progresses have been made in magnetospheric physics by using the data of Double Star Program, Cluster, THEMIS and RBSP missions, or by computer simulations. This paper briefly reviews these works based on papers selected from the 126 publications from March 2012 to March 2014. The subjects cover various sub-branches of magnetospheric physics,including geomagnetic storm, magnetospheric substorm and magnetic reconnection.展开更多
The photographic observations on the components of Sirius were made at the Bosscha Observatory (1955-1986) after the invention of the Sirius grating by van Albada (1956). This special grating enables us to photograph ...The photographic observations on the components of Sirius were made at the Bosscha Observatory (1955-1986) after the invention of the Sirius grating by van Albada (1956). This special grating enables us to photograph the two components that differ by 10 magnitudes. An overview on the technique of the photographic observations on this pair is presented in this paper, as well as the method of measurements and reductions. Combination of our results with the measurements carried out at the US Naval Observatory (1965-1972) on this pair have covered almost all the observable part of a revolution. An orbit determined by van den Bos (1960), which based mostly on visual observations, fails to agree with photographic measurements. It gives negative residuals in the position angles and large discrepancies in the separations. Revision to the orbit is, therefore, necessary to carry out.展开更多
一个图H称为一个双星(Doub le Star),当H由2个不交的星K1,m1,K1,m2加上连接它们最大度点的一条边所构成.图G的一个支撑子图F称为一个双星(DS)因子,当F的每一个连通分支是一个双星.本文研究完全偶图Km,n的DS-因子计数,给出了Km,n的DS-因...一个图H称为一个双星(Doub le Star),当H由2个不交的星K1,m1,K1,m2加上连接它们最大度点的一条边所构成.图G的一个支撑子图F称为一个双星(DS)因子,当F的每一个连通分支是一个双星.本文研究完全偶图Km,n的DS-因子计数,给出了Km,n的DS-因子计数公式.展开更多
文摘In the past two years, many progresses have been made in magnetospheric physics by using the data of Double Star Program, Cluster, THEMIS and RBSP missions, or by computer simulations. This paper briefly reviews these works based on papers selected from the 126 publications from March 2012 to March 2014. The subjects cover various sub-branches of magnetospheric physics,including geomagnetic storm, magnetospheric substorm and magnetic reconnection.
文摘The photographic observations on the components of Sirius were made at the Bosscha Observatory (1955-1986) after the invention of the Sirius grating by van Albada (1956). This special grating enables us to photograph the two components that differ by 10 magnitudes. An overview on the technique of the photographic observations on this pair is presented in this paper, as well as the method of measurements and reductions. Combination of our results with the measurements carried out at the US Naval Observatory (1965-1972) on this pair have covered almost all the observable part of a revolution. An orbit determined by van den Bos (1960), which based mostly on visual observations, fails to agree with photographic measurements. It gives negative residuals in the position angles and large discrepancies in the separations. Revision to the orbit is, therefore, necessary to carry out.
