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Two neutron stars merge somewhere in the Universe approximately every 10 seconds, creating violent explosions observable in gravitational waves and across the electromagnetic spectrum. The transformative coincident gravitational-wave and…

High Energy Astrophysical Phenomena · Physics 2022-02-21 Nikhil Sarin , Paul D. Lasky

The dynamics of binary stars provides a unique avenue to gather insight into the study of the structure and dynamics of star clusters and galaxies. In this paper, we present the results of a set of $N$-body simulations aimed at exploring…

Astrophysics of Galaxies · Physics 2023-03-29 Alexander R. Livernois , Enrico Vesperini , Václav Pavlík

The environment of a binary star system may contain two circumstellar disks, one orbiting each of the stars, and a circumbinary disk orbiting about the entire binary. The disk structure and evolution are modified by the presence of the…

Solar and Stellar Astrophysics · Physics 2021-11-16 Stephen H. Lubow , Pawel Artymowicz

The detection of gravitational wave events has stimulated theoretical modeling of the formation and evolution of double compact objects (DCOs). However, even for the most studied isolated binary evolution channel, there exist large…

High Energy Astrophysical Phenomena · Physics 2024-02-08 Zhu-Ling Deng , Xiang-Dong Li , Yong Shao , Kun Xu

The recent detection of gravitational waves indicates that stellar-mass black hole binaries are likely to be a key population of sources for forthcoming observations. With future upgrades, ground-based detectors could detect merging black…

Cosmology and Nongalactic Astrophysics · Physics 2017-02-15 Liang Dai , Tejaswi Venumadhav , Kris Sigurdson

Neutrino and antineutrino fluxes from a core-collapse galactic supernova are studied, within a representative three-flavor scenario with inverted mass hierarchy and tiny 1-3 mixing. The initial flavor evolution is dominated by collective…

High Energy Physics - Phenomenology · Physics 2010-04-23 Gianluigi Fogli , Eligio Lisi , Antonio Marrone , Irene Tamborra

The merger of two carbon-oxygen white dwarfs has long been theorized to lead to a massive carbon-oxygen or oxygen-neon white dwarf, accretion-induced collapse to a neutron star, or a type Ia supernova. Determining which mergers lead to a…

Solar and Stellar Astrophysics · Physics 2014-10-20 Chenchong Zhu

The coalescence of a neutron-star binary is likely to result in the formation of a neutron-star merger remnant for a large range of binary mass configurations. The massive merger remnant shows strong oscillations, which are excited by the…

High Energy Astrophysical Phenomena · Physics 2016-02-03 A. Bauswein , J. Clark , N. Stergioulas , H. -T. Janka

Presently, there are several experimental setups dedicated to rare event searches, such as dark matter interactions or double beta decay, in the building or commissioning phases. These experiments often use large mass detectors and have…

High Energy Astrophysical Phenomena · Physics 2012-11-08 Carlos Martinez Amaya , Matteo Biassoni

Rapidly rotating stars are readily produced in binary systems. An accreting star in a binary system can be spun up by mass accretion and quickly approach the break-up limit. Mergers between two stars in a binary are expected to result in…

Solar and Stellar Astrophysics · Physics 2015-05-20 S. E. de Mink , N. Langer , R. G. Izzard

We expand on our study of the gravitational and electromagnetic emissions from the late stage of an inspiraling neutron star binary as presented in Ref. \cite{Palenzuela:2013hu}. Interactions between the stellar magnetospheres, driven by…

General Relativity and Quantum Cosmology · Physics 2013-09-13 Carlos Palenzuela , Luis Lehner , Steven L. Liebling , Marcelo Ponce , Matthew Anderson , David Neilsen , Patrick Motl

Determining the differential-rotation law of compact stellar objects produced in binary neutron stars mergers or core-collapse supernovae is an old problem in relativistic astrophysics. Addressing this problem is important because it…

General Relativity and Quantum Cosmology · Physics 2017-08-16 Matthias Hanauske , Kentaro Takami , Luke Bovard , Luciano Rezzolla , José A. Font , Filippo Galeazzi , Horst Stöcker

Neutrino masses and mixings produce vacuum oscillations, an established quantum mechanical phenomenon. In matter, the Mikheev-Smirnov-Wolfenstein effect, due to neutrino interactions with the background particles, triggers resonant flavor…

High Energy Physics - Phenomenology · Physics 2024-10-11 M. Cristina Volpe

The simultaneous detection of gravitational and electromagnetic waves from a binary neutron star merger has both solidified the link between neutron star mergers and short-duration gamma-ray bursts (GRBs) and demonstrated the ability of…

High Energy Astrophysical Phenomena · Physics 2018-10-10 Brandon K. Wiggins , Christopher L. Fryer , Joseph M. Smidt , Dieter H. Hartmann , Nicole Lloyd-Ronning , Chris Belcynski

The merger of a neutron star (NS) binary may result in the formation of a long-lived, or indefinitely stable, millisecond magnetar remnant surrounded by a low-mass ejecta shell. A portion of the magnetar's prodigious rotational energy is…

High Energy Astrophysical Phenomena · Physics 2017-11-10 Ke Fang , Brian D. Metzger

Most of massive stars form in binary or higher-order systems in clumpy, sub-structured clusters. In the very first phases of their life, these stars are expected to interact with the surrounding environment, before being released to the…

Understanding the galaxy in which we live is one of the great intellectual challenges facing modern science. With the advent of high quality observational data, the chemical evolution modeling of our galaxy has been the subject of numerous…

Astrophysics · Physics 2009-11-11 Dany Vanbeveren , Erwin De Donder

Neutron star mergers have been proposed as the main source of heavy $r$-process nucleosynthesis in the Universe. However, the mergers' significant expected delay after binary formation is in tension with observed very early $r$-process…

High Energy Astrophysical Phenomena · Physics 2023-02-22 I. Bartos , S. Rosswog , V. Gayathri , M. C. Miller , D. Veske , S. Marka

The remnant of neutron star mergers is dense in neutrinos. By employing inputs from one hydrodynamical simulation of a binary neutron star merger remnant with a black hole of $3\ M_\odot$ in the center, dimensionless spin parameter $0.8$…

High Energy Astrophysical Phenomena · Physics 2018-01-03 Meng-Ru Wu , Irene Tamborra , Oliver Just , Hans-Thomas Janka

The majority of stars more massive than the Sun is found in binary or multiple star systems and many of them will interact during their evolution. Specific interactions, where progenitors and post-mass transfer (MT) systems are clearly…

Instrumentation and Methods for Astrophysics · Physics 2026-01-07 Stephan Geier , Thomas Kupfer , Pierre Maxted , Veronika Schaffenroth
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