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- Chinese Academy of SciencesCN243 papers
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127 papers · 1 filter
Determination of Topology Skeleton of Magnetic Fields in a Solar Active Region
Hui Zhao, Jing-Xiu Wang, Jun Zhang +2
The knowledge of magnetic topology is the key to understand magnetic energy release in astrophysics. Based on observed vector magnetograms, we have determined threedimensional (3D)…
ASTROD and ASTROD I -- Overview and Progress
Wei-Tou Ni
In this paper, we present an overview of ASTROD (Astrodynamical Space Test of Relativity using Optical Devices) and ASTROD I mission concepts and studies. The missions employ deep-…
Central engine afterglow of Gamma-ray Bursts
Yi-Zhong Fan, Tsvi Piran, Da-Ming Wei
Before 2004, nearly all GRB afterglow data could be understood in the context of the external shocks model. This situation has changed in the past two years, when it became clear t…
Photometric Properties and Scaling Relations of Early Type Brightest Cluster Galaxies
F. S. Liu, X. Y. Xia, Shude Mao +2
We investigate the photometric properties of the early type Brightest Cluster Galaxies (BCGs) using a carefully selected sample of 85 BCGs from the C4 cluster catalogue with redshi…
The effect of binaries on the dynamical mass determination of star clusters
M. B. N. Kouwenhoven, R. de Grijs
The total mass of distant star clusters is often derived from the virial theorem, using line-of-sight velocity dispersion measurements and half-light radii. Although most stars for…
How many radio-loud quasars can be detected by the Gamma-Ray Large Area Space Telescope?
Xinwu Cao, J. M. Bai
In the unification scheme, radio quasars and FR II radio galaxies come from the same parent population, but viewed at different angles. Based on the Comptonization models for the g…