4 papers
The exotic black hole-neutron star binaries in our Galaxy
Man Ho Chan
It has been suggested that there are black hole-neutron star (BH-NS) binaries in our Galaxy. However, despite the effort of intensive radio search for decades, none of…
Does the high-energy AMS-02 positron flux originate from the dark matter density spikes around nearby black holes?
Man Ho Chan, Chak Man Lee
Recent measurements made by the Alpha Magnetic Spectrometer (AMS) have detected accurate positron flux for energy range 1-1000 GeV. The energy spectrum can be best described by two…
Atmospheric absorption of dark matter
Man Ho Chan
Typically, the interaction between dark matter and ordinary matter is assumed to be very small. Nevertheless, in this article, I show that the effective resonant absorption of dark…
Identifying dark matter signals by the radio continuum spectral data of the cool-core cluster RX J1720.1+2638
Man Ho Chan, Chak Man Lee
Investigating the signals of dark matter annihilation is one of the most popular ways to understand the nature of dark matter. In particular, many recent studies are focussing on u…