Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Leyde, Konstantin"'
The dark sirens method combines gravitational waves and catalogs of galaxies to constrain the cosmological expansion history, merger rates and mass distributions of compact objects, and the laws of gravity. However, the incompleteness of galaxy catal
Externí odkaz:
http://arxiv.org/abs/2409.20531
Publikováno v:
Phys. Rev. D 109, 064056 (2024)
We apply neural posterior estimation for fast-and-accurate hierarchical Bayesian inference of gravitational wave populations. We use a normalizing flow to estimate directly the population hyper-parameters from a collection of individual source observ
Externí odkaz:
http://arxiv.org/abs/2311.12093
Autor:
Gray, Rachel, Beirnaert, Freija, Karathanasis, Christos, Revenu, Benoît, Turski, Cezary, Chen, Anson, Baker, Tessa, Vallejo, Sergio, Romano, Antonio Enea, Ghosh, Tathagata, Ghosh, Archisman, Leyde, Konstantin, Mastrogiovanni, Simone, More, Surhud
In the absence of numerous gravitational-wave detections with confirmed electromagnetic counterparts, the "dark siren" method has emerged as a leading technique of gravitational-wave cosmology. The method allows redshift information of such events to
Externí odkaz:
http://arxiv.org/abs/2308.02281
Autor:
Mastrogiovanni, Simone, Pierra, Grégoire, Perriès, Stéphane, Laghi, Danny, Santoro, Giada Caneva, Ghosh, Archisman, Gray, Rachel, Karathanasis, Christos, Leyde, Konstantin
We present icarogw 2.0, a pure CPU/GPU python code developed to infer astrophysical and cosmological population properties of noisy, heterogeneous, and incomplete observations. icarogw 2.0 is mainly developed for compact binary coalescence (CBC) popu
Externí odkaz:
http://arxiv.org/abs/2305.17973
Autor:
Mastrogiovanni, Simone, Laghi, Danny, Gray, Rachel, Santoro, Giada Caneva, Ghosh, Archisman, Karathanasis, Christos, Leyde, Konstantin, Steer, Danièle A., Perriès, Stéphane, Pierra, Grégoire
Gravitational wave (GW) sources at cosmological distances can be used to probe the expansion rate of the Universe. GWs directly provide a distance estimation of the source but no direct information on its redshift. The optimal scenario to obtain a re
Externí odkaz:
http://arxiv.org/abs/2305.10488
Autor:
Kuntz, Adrien, Leyde, Konstantin
Some binary black hole systems potentially observable in LISA could be in orbit around a supermassive black hole (SMBH). The imprint of relativistic three-body effects on the waveform of the binary can be used to estimate all the parameters of the tr
Externí odkaz:
http://arxiv.org/abs/2212.09753
Autor:
Gair, Jonathan R., Ghosh, Archisman, Gray, Rachel, Holz, Daniel E., Mastrogiovanni, Simone, Mukherjee, Suvodip, Palmese, Antonella, Tamanini, Nicola, Baker, Tessa, Beirnaert, Freija, Bilicki, Maciej, Chen, Hsin-Yu, Dálya, Gergely, Ezquiaga, Jose Maria, Farr, Will M., Fishbach, Maya, Garcia-Bellido, Juan, Ghosh, Tathagata, Huang, Hsiang-Yu, Karathanasis, Christos, Leyde, Konstantin, Hernandez, Ignacio Magaña, Noller, Johannes, Pierra, Gregoire, Raffai, Peter, Romano, Antonio Enea, Seglar-Arroyo, Monica, Steer, Danièle A., Turski, Cezary, Vaccaro, Maria Paola, Vallejo-Peña, Sergio Andrés
We outline the ``dark siren'' galaxy catalog method for cosmological inference using gravitational wave (GW) standard sirens, clarifying some common misconceptions in the implementation of this method. When a confident transient electromagnetic count
Externí odkaz:
http://arxiv.org/abs/2212.08694
Autor:
Leyde, Konstantin, Mastrogiovanni, Simone, Steer, Danièle A., Chassande-Mottin, Eric, Karathanasis, Christos
In this proceedings, we are interested in dark gravitational wave standard sirens and their use for cosmology and for constraining modified gravity theories. Due to the extra friction term introduced in their propagation equation those theories predi
Externí odkaz:
http://arxiv.org/abs/2203.11680
Publikováno v:
JCAP04(2023)005
Particle emission, in addition to gravitational radiation from cosmic string loops, affects the resulting loop distribution and hence the corresponding observational consequences of cosmic strings. Here we focus on two models in which loops of length
Externí odkaz:
http://arxiv.org/abs/2112.11093
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