no code implementations • 17 Feb 2021 • Diptimoy Ghosh, Divya Sachdeva
Ultralight dark photons predicted in several Standard Model extensions can trigger the superradiant instability around rotating black holes if their Compton wavelength is comparable to the Blackhole radius.
High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
no code implementations • 7 Sep 2020 • Diptimoy Ghosh, Arun Thalapillil, Farman Ullah
We investigate various potential astrophysical pointers and bounds---including limits on charges, location of stable orbits and horizons in asymptotically flat and asymptotically de Sitter backgrounds, bounds from galactic magnetic fields and dark matter measurements, characteristic electromagnetic fluxes and tell-tale gravitational wave emissions during binary inspirals.
High Energy Physics - Phenomenology High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology High Energy Physics - Theory
