Constraining burdened PBHs with gravitational waves
Basabendu Barman, Kousik Loho, Óscar Zapata
Abstract
Abstract We investigate the implications of memory burden on the gravitational wave (GW) spectrum arising from the Hawking evaporation of light primordial black holes (PBHs). By considering both rotating (Kerr) and non-rotating (Schwarzschild) PBHs, we demonstrate that the overproduction of primordial GWs from burdened PBHs could impose stringent constraints on the parameters governing backreaction effects. These constraints, derived from Δ N eff measurements by Planck and prospective experiments such as CMB-S4 and CMB-HD, offer novel insights into the impact of memory burden on PBH dynamics.
Topics & Concepts
PhysicsGravitational wavePrimordial black holeAstronomyGravitationAstrophysicsTheoretical physicsClassical mechanicsBinary black holeCosmology and Gravitation TheoriesPulsars and Gravitational Waves ResearchBlack Holes and Theoretical Physics