We discussed the physical background of the unified scaling law in spiral galaxies,and qualitatively obtained the power index of the empirical relation among the luminosity L,radius R and the rotation velocity V.We al...We discussed the physical background of the unified scaling law in spiral galaxies,and qualitatively obtained the power index of the empirical relation among the luminosity L,radius R and the rotation velocity V.We also discussed the possible causes for the data dispersion on the plane in three-dimensional space of these parameters.展开更多
The signature of the self-microlensing in compact binaries(white dwarfs,neutron stars and black holes)is a flare with the characteristic time of typically a few minutes.The probability of detecting these microlensing ...The signature of the self-microlensing in compact binaries(white dwarfs,neutron stars and black holes)is a flare with the characteristic time of typically a few minutes.The probability of detecting these microlensing events can be as high as 1/50 for a photometric accuracy of Δm=0.01 in magnitude.The discovery of the self-microlensing by binaries would furnish an additional way to find the masses of the lens and the companion,and will be promising for the searches of black holes.展开更多
基金Supported by the National Natural Science Foundation of China,and the National Key Basic Research Science Foundation。
文摘We discussed the physical background of the unified scaling law in spiral galaxies,and qualitatively obtained the power index of the empirical relation among the luminosity L,radius R and the rotation velocity V.We also discussed the possible causes for the data dispersion on the plane in three-dimensional space of these parameters.
基金Supported by the National Natural Science Foundation of China under Grant No.19421004.
文摘The signature of the self-microlensing in compact binaries(white dwarfs,neutron stars and black holes)is a flare with the characteristic time of typically a few minutes.The probability of detecting these microlensing events can be as high as 1/50 for a photometric accuracy of Δm=0.01 in magnitude.The discovery of the self-microlensing by binaries would furnish an additional way to find the masses of the lens and the companion,and will be promising for the searches of black holes.
