【作者单位】Institute for Space and Astrophysics, Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China;Institute of Cosmic Rays, Department of Physics, College of Science, Tibet University, Lhasa 850000, China;Institute for Space and Astrophysics, Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China;Institute for Space and Astrophysics, Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China
【摘要】 Observation of the isolated neutron star 1E 1207.4−5209 shows three distinct absorption features, regularly spaced at 0.7, 1.4, and 2.1 keV, which vary in phase with the star's rotation. In this paper, we attempt to clarify the understanding of...
line in Active Galactic Nuclei - calculation in the optically thin case
