38 citations · 145 across the 16 of their papers we have counts for
7 papers · 1 filter
Analysing the radio flux density profile of the M31 galaxy: a possible dark matter interpretation
Man Ho Chan, Chu Fai Yeung, Lang Cui +1
Some recent studies have examined the gamma-ray flux profile of our Galaxy to determine the signal of dark matter annihilation. However, the results are controversial and no confir…
Constraining annihilating dark matter mass by the radio continuum spectral data of a high-redshift galaxy cluster
Man Ho Chan, Chak Man Lee, C. -Y. Ng +1
In the past decade, the properties of annihilating dark matter models were examined by various kinds of data, including the data of gamma rays, radio waves, X-ray, positrons, elect…
Constraining dark matter by the 511 keV line
Man Ho Chan, Chung Hei Leung
In the past few decades, observations indicated that an unexplained high production rate of positrons (the strong 511 keV line) exists in the Milky Way center. By using the fact th…
Ruling out dark matter interpretation of the galactic GeV excess by gamma-ray data of galaxy clusters
Man Ho Chan, Chung Hei Leung
Recently, some very tight constraints of annihilating dark matter have been obtained from gamma-ray data of the Milky Way and Milky Way dwarf spheroidal satellite galaxies. In this…
Generalized Langevin equation description of the stochastic oscillations of general relativistic disks
Chun Sing Leung, Gabriela Mocanu, Tiberiu Harko
We consider a description of the stochastic oscillations of the general relativistic accretion disks around compact astrophysical objects based on the generalized Langevin equation…
Fractal dimension and thermodynamic fluctuation properties of IDV light curves
C. S. Leung, J. Y. Wei, A. K. H. Kong +2
Fractals are a basic tool to phenomenologically describe natural objects having a high degree of temporal or spatial variability. From a physical point of view the fractal properti…
Modeling the IDV emissions of the BL Lac Objects with a Langevin type stochastic differential equation
C. S. Leung, J. Y. Wei, T. Harko +1
In this paper, we introduce a simplified model for explaining the observations of the optical intraday variability (IDV) of the BL Lac Objects. We assume that the source of the IDV…