Probing Accretion Physics with Gravitational Waves

Autor: Lorenzo Speri, Andrea Antonelli, Laura Sberna, Stanislav Babak, Enrico Barausse, Jonathan R. Gair, Michael L. Katz

Publikováno v: Physical Review X, Vol 13, Iss 2, p 021035 (2023)

Gravitational-wave observations of extreme mass ratio inspirals (EMRIs) offer the opportunity to probe the environments of active galactic nuclei (AGN) through the torques that accretion disks induce on the binary. Within a Bayesian framework, we stu

Externí odkaz: https://doaj.org/article/6cd45c4f3f19412c8bfc236a205fefc4

Dark photon superradiance quenched by dark matter

Autor: Enrico Cannizzaro, Laura Sberna, Andrea Caputo, Paolo Pani

Publikováno v: Physical Review
Physical Review D

Black-hole superradiance has been used to place very strong bounds on a variety of models of ultralight bosons such as axions, new light scalars, and dark photons. It is common lore to believe that superradiance bounds are broadly model independent a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b2b02b20f7522a1a5fbe602243bfee1
http://repo.scoap3.org/api

Nonlinear effects in the black hole ringdown: Absorption-induced mode excitation

Autor: Laura Sberna, Pablo Bosch, William E. East, Stephen R. Green, Luis Lehner

Publikováno v: Physical Review D
Physical Review D, 105(6):064046. American Institute of Physics

Gravitational-wave observations of black hole ringdowns are commonly used to characterize binary merger remnants and to test general relativity. These analyses assume linear black hole perturbation theory, in particular that the ringdown can be descr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a94b533a546f73b5dee7bc3a70a1265
https://doi.org/10.1103/physrevd.105.064046

Observing GW190521-like binary black holes and their environment with LISA

Autor: Laura Sberna, Stanislav Babak, Sylvain Marsat, Andrea Caputo, Giulia Cusin, Alexandre Toubiana, Enrico Barausse, Chiara Caprini, Tito Dal Canton, Alberto Sesana, Nicola Tamanini

Publikováno v: Phys.Rev.D
Phys.Rev.D, 2022, 106 (6), pp.064056. ⟨10.1103/PhysRevD.106.064056⟩
Physical Review D

Binaries of relatively massive black holes like GW190521 have been proposed to form in dense gas environments, such as the disks of Active Galactic Nuclei (AGNs), and they might be associated with transient electromagnetic counterparts. The interacti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2ee88d4d9fd2103b92159558b6b6c24
https://hal.science/hal-03681626

Detectable Environmental Effects in GW190521-like Black-Hole Binaries with LISA

Autor: Giulia Cusin, Paolo Pani, Nicola Tamanini, Andrea Caputo, Chiara Caprini, Alberto Sesana, Enrico Barausse, Alexandre Toubiana, Laura Sberna, Karan Jani, Stanislav Babak, Sylvain Marsat

Publikováno v: Physical Review Letters
Phys.Rev.Lett.
Phys.Rev.Lett., 2021, 126 (10), pp.101105. ⟨10.1103/PhysRevLett.126.101105⟩
Physical Review Letters, American Physical Society, 2021, 126 (10), pp.101105. ⟨10.1103/PhysRevLett.126.101105⟩

GW190521 is the compact binary with the largest masses observed to date, with at least one in the pair-instability gap. This event has also been claimed to be associated with an optical flare observed by the Zwicky Transient Facility in an Active Gal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c1ef816fd5773bd1fd71f42dc3644f8
http://hdl.handle.net/11573/1563236