Probing the Dark Matter density with gravitational waves from super-massive binary black holes

Autor:	Ghoshal, Anish, Strumia, Alessandro
Rok vydání:	2023
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	Supermassive black hole binaries source gravitational waves measured by Pulsar Timing Arrays. The frequency spectrum of this stochastic background is predicted more precisely than its amplitude. We argue that Dark Matter friction can suppress the spectrum around nHz frequencies, where it is measured, allowing to derive robust and significant bounds on the Dark Matter density, which, in turn, controls indirect detection signals from galactic centers. A precise spectrum of gravitational waves would translate in a tomography of the DM density profile, potentially probing DM particle-physics effects that induce a characteristic DM density profile, such as DM annihilations or de Broglie wavelength. Comment: 16 pages, 3 figures. v2: factor {\pi} fixed, references added. Webinar presentation: https://www.youtube.com/watch?v=NHGdNLOZ0uc
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2306.17158 Zobrazit plný text záznamu View this record from Arxiv