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Binary black hole mergers are among the most violent events in the Universe, leading to extreme warping of spacetime and copious emission of gravitational radiation. Even though black holes are the most compact objects they are not…

General Relativity and Quantum Cosmology · Physics 2017-07-05 Chad Hanna , Matthew C. Johnson , Luis Lehner

An electromagnetic transient powered by the radioactive decay of r-process elements, a so-called kilonova/macronova, is one of the possible observable consequences of compact binary mergers including at east one neutron star. Recent…

High Energy Astrophysical Phenomena · Physics 2015-06-17 Kenta Hotokezaka , Koutarou Kyutoku , Masaomi Tanaka , Kenta Kiuchi , Yuichiro Sekiguchi , Masaru Shibata , Shinya Wanajo

Neutron stars and stellar-mass black holes are the remnants of massive stars, which ended their lives in supernova explosions. These exotic objects can only be studied in relatively rare cases. If they are interacting with close companions…

Solar and Stellar Astrophysics · Physics 2009-07-22 Stephan Geier , Uli Heber , Heinz Edelmann , Thomas Kupfer , Ralf Napiwotzki , Philipp Podsiadlowski

We investigate the consequences of a model of the assembly and growth of massive black holes from primordial seeds, remnants of the first generation of stars in a hierarchical structure formation scenario. Our model traces the build-up of…

Astrophysics · Physics 2009-11-10 Marta Volonteri , Rosalba Perna

There is irresistible observational evidence that binary systems of compact objects with at least one neutron star are progenitors of short gamma-ray bursts, as well as a production site for r-process elements, at least when some matter is…

High Energy Astrophysical Phenomena · Physics 2020-09-15 C. J. Krüger , F. Foucart

Gravitational waves and electromagnetic radiations from a neutron star merger were discovered on 17 August 2017. Multiband observations of the optical transient have identified brightness and spectrum features broadly consistent with…

High Energy Astrophysical Phenomena · Physics 2019-02-07 Li-Xin Li

In the light of recent observations in which short gamma-ray bursts are interpreted as arising from black-hole(BH), neutron-star(NS) or NS-NS mergings we would like to review our research on the evolution of compact binaries, especially…

Astrophysics · Physics 2008-11-26 H. A. Bethe , G. E. Brown , C. -H. Lee

The radioactive decay of the freshly synthesized $r$-process nuclei ejected in compact binary mergers power optical/infrared macronovae (kilonovae) that follow these events. The light curves depend critically on the energy partition among…

High Energy Astrophysical Phenomena · Physics 2016-04-06 Kenta Hotokezaka , Shinya Wanajo , Masaomi Tanaka , Aya Bamba , Yukikatsu Terada , Tsvi Piran

This chapter discusses the implications of X-ray binaries on our knowledge of Type Ibc and Type II supernovae. X-ray binaries contain accreting neutron stars and stellar--mass black holes which are the end points of massive star evolution.…

High Energy Astrophysical Phenomena · Physics 2018-04-25 Jorge Casares , Peter G. Jonker , Garik Israelian

Massive (hypermassive and supramassive) neutron stars are likely to be often formed after the merger of binary neutron stars. We explore the evolution process of the remnant massive neutron stars and gravitational waves emitted by them,…

High Energy Astrophysical Phenomena · Physics 2015-06-16 Kenta Hotokezaka , Kenta Kiuchi , Koutarou Kyutoku , Takayuki Muranushi , Yu-ichiro Sekiguchi , Masaru Shibata , Keisuke Taniguchi

Short Gamma-Ray Bursts (SGRBs) are believed to arise from compact binary mergers (either neutron star-neutron star or black hole-neutron star). If so their jets must penetrate outflows that are ejected during the merger. As a jet crosses…

High Energy Astrophysical Phenomena · Physics 2017-10-24 Ore Gottlieb , Ehud Nakar , Tsvi Piran

In the first work of this series, we adopt a GW170817-like, viewing-angle-dependent kilonova model and the standard afterglow model with the lightcurve distribution based on the properties of cosmological short gamma-ray bursts afterglows…

High Energy Astrophysical Phenomena · Physics 2022-08-30 Jin-Ping Zhu , Yuan-Pei Yang , Bing Zhang , He Gao , Yun-Wei Yu

Observations of gravitational waves and their electromagnetic counterparts may soon uncover the existence of coalescing compact binary systems formed by a stellar-mass black hole and a neutron star. These mergers result in a remnant black…

General Relativity and Quantum Cosmology · Physics 2020-01-31 Francesco Zappa , Sebastiano Bernuzzi , Francesco Pannarale , Michela Mapelli , Nicola Giacobbo

We perform long-term general relativistic neutrino radiation hydrodynamics simulations (in axisymmetry) for a massive neutron star (MNS) surrounded by a torus, which is a canonical remnant formed after the binary neutron star merger. We…

High Energy Astrophysical Phenomena · Physics 2018-06-27 Sho Fujibayashi , Kenta Kiuchi , Nobuya Nishimura , Yuichiro Sekiguchi , Masaru Shibata

We discuss the formation and evolution of binaries which contain neutron stars or black holes. It is shown that in a stellar system which for $10^{10}$ yr had star formation rate similar to the current one in the Galactic disc, the rate of…

Astrophysics · Physics 2007-05-23 Lev Yungelson , Simon F. Portegies Zwart

There is now good evidence linking short-hard GRBs with both elliptical and spiral galaxies at relatively low redshifts, redshift of about 0.2. This contrasts with the average redshift of about 2 of long-duration events, which also occur…

Astrophysics · Physics 2007-05-23 S. R. Kulkarni

The aim of this work is to study the impact of a binary companion on the evolution of two-planet systems during both the type-II migration phase and their long-term evolution after the dissipation of the protoplanetary disk. We use the…

Earth and Planetary Astrophysics · Physics 2022-08-17 Arnaud Roisin , Nikita Doukhanin , Jean Teyssandier , Anne-Sophie Libert

It has been estimated that a significant proportion of binary neutron star merger events produce long-lived massive remnants supported by differential rotation and subject to rotational instabilities. To examine formation and oscillation of…

General Relativity and Quantum Cosmology · Physics 2018-10-08 Xuefeng Zhang , Zhoujian Cao

The first X-ray afterglow for a short (~30 ms), hard gamma-ray burst was detected by Swift on 9 May 2005 (GRB 050509b). No optical or radio counterpart was identified in follow-up observations. The tentative association of the GRB with a…

Astrophysics · Physics 2009-11-11 William H. Lee , Enrico Ramirez-Ruiz , Jonathan Granot

We present an empirical approach for interpreting gravitational wave signals of binary black hole mergers under the assumption that the underlying black hole population is sourced by remnants of stellar evolution. Using the observed…

Astrophysics of Galaxies · Physics 2017-11-08 Oliver D. Elbert , James S. Bullock , Manoj Kaplinghat
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