Zobrazeno 1 - 10
of 351
pro vyhledávání: '"Buonanno, Alessandra"'
Autor:
Islam, Tousif, Faggioli, Guglielmo, Khanna, Gaurav, Field, Scott E., van de Meent, Maarten, Buonanno, Alessandra
We investigate the late-time tail behavior in gravitational waves from merging eccentric binary black holes (BBH) using black hole perturbation theory. For simplicity, we focus only on the dominant quadrupolar mode of the radiation. We demonstrate th
Externí odkaz:
http://arxiv.org/abs/2407.04682
Gravitational waves (GWs) provide a unique opportunity to test General Relativity (GR) in the highly dynamical, strong-field regime. So far, the majority of the tests of GR with GW signals have been carried out following parametrized, theory-independ
Externí odkaz:
http://arxiv.org/abs/2406.13654
Autor:
Sänger, Elise M., Roy, Soumen, Agathos, Michalis, Birnholtz, Ofek, Buonanno, Alessandra, Dietrich, Tim, Haney, Maria, Julié, Félix-Louis, Pratten, Geraint, Steinhoff, Jan, Broeck, Chris Van Den, Biscoveanu, Sylvia, Char, Prasanta, Heffernan, Anna, Joshi, Prathamesh, Kedia, Atul, Schofield, R. M. S., Trevor, M., Zevin, Michael
On 29 May 2023, the LIGO Livingston observatory detected the gravitational-wave signal GW230529_181500 from the merger of a neutron star with a lower mass-gap compact object. Its long inspiral signal provides a unique opportunity to test General Rela
Externí odkaz:
http://arxiv.org/abs/2406.03568
Driven by advances in scattering amplitudes and worldline-based methods, recent years have seen significant progress in our ability to calculate gravitational two-body scattering observables. These observables effectively encapsulate the gravitationa
Externí odkaz:
http://arxiv.org/abs/2405.19181
Autor:
Faggioli, Guglielmo, van de Meent, Maarten, Buonanno, Alessandra, Gamboa, Aldo, Khalil, Mohammed, Khanna, Gaurav
In this work, we test an effective-one-body radiation-reaction force for eccentric planar orbits of a test mass in a Kerr background, which contains third-order post-Newtonian (PN) non-spinning and second-order PN spin contributions. We compare the a
Externí odkaz:
http://arxiv.org/abs/2405.19006
Autor:
Gupta, Anuradha, Arun, K. G., Barausse, Enrico, Bernard, Laura, Berti, Emanuele, Bhat, Sajad A., Buonanno, Alessandra, Cardoso, Vitor, Cheung, Shun Yin, Clarke, Teagan A., Datta, Sayantani, Dhani, Arnab, Ezquiaga, Jose María, Gupta, Ish, Guttman, Nir, Hinderer, Tanja, Hu, Qian, Janquart, Justin, Johnson-McDaniel, Nathan K., Kashyap, Rahul, Krishnendu, N. V., Lasky, Paul D., Lundgren, Andrew, Maggio, Elisa, Mahapatra, Parthapratim, Maselli, Andrea, Narayan, Purnima, Nielsen, Alex B., Nuttall, Laura K., Pani, Paolo, Passenger, Lachlan, Payne, Ethan, Pompili, Lorenzo, Reali, Luca, Saini, Pankaj, Samajdar, Anuradha, Tiwari, Shubhanshu, Tong, Hui, Broeck, Chris Van Den, Yagi, Kent, Yang, Huan, Yunes, Nicolás, Sathyaprakash, B. S.
General relativity (GR) has proven to be a highly successful theory of gravity since its inception. The theory has thrivingly passed numerous experimental tests, predominantly in weak gravity, low relative speeds, and linear regimes, but also in the
Externí odkaz:
http://arxiv.org/abs/2405.02197
Autor:
Gupte, Nihar, Ramos-Buades, Antoni, Buonanno, Alessandra, Gair, Jonathan, Miller, M. Coleman, Dax, Maximilian, Green, Stephen R., Pürrer, Michael, Wildberger, Jonas, Macke, Jakob, Schölkopf, Bernhard
Binary black holes (BBHs) in eccentric orbits produce distinct modulations the emitted gravitational waves (GWs). The measurement of orbital eccentricity can provide robust evidence for dynamical binary formation channels. We analyze 57 GW events fro
Externí odkaz:
http://arxiv.org/abs/2404.14286
Autor:
Dhani, Arnab, Völkel, Sebastian, Buonanno, Alessandra, Estelles, Hector, Gair, Jonathan, Pfeiffer, Harald P., Pompili, Lorenzo, Toubiana, Alexandre
Gravitational-wave (GW) observations of binary black-hole (BBH) coalescences are expected to address outstanding questions in astrophysics, cosmology, and fundamental physics. Realizing the full discovery potential of upcoming LIGO-Virgo-KAGRA (LVK)
Externí odkaz:
http://arxiv.org/abs/2404.05811
Effective-one-body (EOB) waveforms employed by the LIGO-Virgo-KAGRA Collaboration have primarily been developed by resumming the post-Newtonian expansion of the relativistic two-body problem. Given the recent significant advancements in post-Minkowsk
Externí odkaz:
http://arxiv.org/abs/2402.12342
For the analysis of gravitational-wave signals, fast and accurate gravitational-waveform models are required. These enable us to obtain information on the system properties from compact binary mergers. In this article, we introduce the NRTidalv3 mode
Externí odkaz:
http://arxiv.org/abs/2311.07456