1 code implementation • 31 Jan 2019 • Davide Gerosa, Sizheng Ma, Kaze W. K. Wong, Emanuele Berti, Richard O'Shaughnessy, Yanbei Chen, Krzysztof Belczynski
We use population synthesis simulations of isolated binary stars to explore some of the stellar physics that could be constrained with multiband events, and we show that specific formation pathways might be overrepresented in multiband events compared to ground-only detections.
High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology
no code implementations • 14 Nov 2018 • Davide Gerosa, Alicia Lima, Emanuele Berti, Ulrich Sperhake, Michael Kesden, Richard O'Shaughnessy
Within the framework of 2PN black-hole binary spin precession, we explore configurations where one of the two spins oscillates from being completely aligned with the orbital angular momentum to being completely anti-aligned with it during a single precession cycle.
General Relativity and Quantum Cosmology Astrophysics of Galaxies High Energy Astrophysical Phenomena
2 code implementations • 7 Aug 2018 • Davide Gerosa, Emanuele Berti, Richard O'Shaughnessy, Krzysztof Belczynski, Michael Kesden, Daniel Wysocki, Wojciech Gladysz
We study the expected spin misalignments of merging binary black holes (BHs) formed in isolation by combining state-of-the-art population synthesis models with efficient post-Newtonian evolutions, thus tracking sources from stellar formation to gravitational-wave detection.
High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology
3 code implementations • 16 May 2018 • Daniel Wysocki, Jacob Lange, Richard O'Shaughnessy
Using concrete synthetic data based on projections for LIGO and Virgo's O3 run, we discuss how well GW measurements could constrain the mass and spin distribution of coalescing neutron stars and black holes in the near future, within the context of several phenomenological models described in this work.
General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena Solar and Stellar Astrophysics
no code implementations • 20 Jul 2015 • Daniele Trifirò, Richard O'Shaughnessy, Davide Gerosa, Emanuele Berti, Michael Kesden, Tyson Littenberg, Ulrich Sperhake
Gravitational waves from coalescing binary black holes encode the evolution of their spins prior to merger.
General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena
no code implementations • 30 Jun 2015 • Davide Gerosa, Michael Kesden, Richard O'Shaughnessy, Antoine Klein, Emanuele Berti, Ulrich Sperhake, Daniele Trifirò
In this work, we show that these solutions can be unstable when the spin of the higher-mass black hole is aligned with the orbital angular momentum and the spin of the lower-mass black hole is anti-aligned.
General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena
no code implementations • 10 Jun 2015 • Davide Gerosa, Michael Kesden, Ulrich Sperhake, Emanuele Berti, Richard O'Shaughnessy
The dynamics of precessing binary black holes (BBHs) in the post-Newtonian regime has a strong timescale hierarchy: the orbital timescale is very short compared to the spin-precession timescale which, in turn, is much shorter than the radiation-reaction timescale on which the orbit is shrinking due to gravitational-wave emission.
General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies High Energy Astrophysical Phenomena
no code implementations • 3 Nov 2014 • Michael Kesden, Davide Gerosa, Richard O'Shaughnessy, Emanuele Berti, Ulrich Sperhake
We derive an effective potential for binary black-hole (BBH) spin precession at second post-Newtonian order.
General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena
no code implementations • 25 Sep 2014 • John Veitch, Vivien Raymond, Benjamin Farr, Will M. Farr, Philip Graff, Salvatore Vitale, Ben Aylott, Kent Blackburn, Nelson Christensen, Michael Coughlin, Walter Del Pozzo, Farhan Feroz, Jonathan Gair, Carl-Johan Haster, Vicky Kalogera, Tyson Littenberg, Ilya Mandel, Richard O'Shaughnessy, Matthew Pitkin, Carl Rodriguez, Christian Röver, Trevor Sidery, Rory Smith, Marc Van Der Sluys, Alberto Vecchio, Will Vousden, Leslie Wade
We show that our implementation is able to correctly recover the parameters of compact binary signals from simulated data from the advanced GW detectors.
General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics
no code implementations • 18 Feb 2013 • Davide Gerosa, Michael Kesden, Emanuele Berti, Richard O'Shaughnessy, Ulrich Sperhake
Under the plausible assumption that tidal interactions are efficient at aligning the spins of few-solar mass black-hole progenitors with the orbital angular momentum, we find that black-hole spins should be expected to preferentially lie in a plane when they become detectable by gravitational-wave interferometers.
General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena