The dark matter surrounding black hole would form dense dark environment, studying the imprint of dark matter on the observational signals from black hole via accretions and dynamical friction could be a dark matter probe. In this talk I am going to talk about how to study the nature of dark matter from radio and gravitational wave channels. With these studies, black hole would be a promising...
I introduce WimPyDD and WimPyC which are object-oriented and customizable Python codes that calculate accurate predictions for the expected rates in WIMP direct detection experiments and WIMP capture rate in celestial bodies within the framework of Galilean invariant non-relativistic effective theory. Due to the experimental threshold direct detection can not explore signals at low WIMP...
We formulate an effective field theory (EFT) of coupled dark energy (DE) and dark matter (DM) interacting through energy and momentum transfers. In the DE sector, we exploit the EFT of vector-tensor theories with the presence of a preferred time direction on the cosmological background. This prescription allows one to accommodate shift-symmetric and non-shift-symmetric scalar-tensor theories...
In this talk, I will introduce the innermost stable circular orbit (ISCO) in higher-dimensional, static, spherically symmetric, asymptotically flat black holes with anisotropic energy-momentum tensors. Assuming the weak energy condition, a non-positive trace, and constrained radial and tangential pressures, we analyze timelike geodesics via the effective potential. We show that, unlike in four...
