activity
20182025
most citedConstraining Primordial Black Hole Fraction at the Galactic Centre using radio observational data

39 citations · 88 across the 13 of their papers we have counts for

collaborators

13 papers

astro-ph.HE2025

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…

astro-ph.HE2024

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…

astro-ph.HE2024

What if PSR J1910-5959A is an observable self-lensing binary?

Man Ho Chan, Chak Man Lee

In a binary, when the orbital plane of the companion star is almost edge-on along the line-of-sight direction, this would produce an observable self-gravitational lensing effect, w…

hep-ph2023★ 7 cited

A new method to constrain annihilating dark matter

Man Ho Chan, Chak Man Lee

Recent indirect searches of dark matter using gamma-ray, radio, and cosmic-ray data have provided some stringent constraints on annihilating dark matter. In this article, we propos…

astro-ph.GA2022★ 1 cited

Crossing the dark matter soliton core: a possible reversed orbital precession

Man Ho Chan, Chak Man Lee

The ultra-light dark matter (ULDM) model has become a popular dark matter scenario nowadays. The mass of the ULDM particles is extremely small so that they can exhibit wave propert…

gr-qc2022★ 14 cited

The solar system test for the general modified gravity theories

Man Ho Chan, Chak Man Lee

In the past few decades, various versions of modified gravity theories were proposed to mimic the effect of dark matter. Compared with the conventional Newtonian or relativistic dy…