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The gravitational wave signal emitted during the coalescence of two neutron stars carries information about the stars' internal structure. During the long inspiral phase the main matter observable is the tidal interaction between the binary…

General Relativity and Quantum Cosmology · Physics 2022-05-13 Marcella Wijngaarden , Katerina Chatziioannou , Andreas Bauswein , James A. Clark , Neil J. Cornish

We discuss possible implications of the recent detection by the LIGO and VIRGO collaboration of the gravitational-wave event GW170817, the signal of which is consistent with predictions in general relativity on the merging of neutron stars.…

High Energy Physics - Phenomenology · Physics 2018-11-14 Andrea Addazi , Antonino Marciano

The Square Kilometre Array (SKA) will operate in frequency ranges often used by military radar and other communications technology. It has been shown that if Extraterrestrial Intelligences (ETIs) communicate using similar technology, then…

Earth and Planetary Astrophysics · Physics 2015-05-19 D. H. Forgan , R. C. Nichol

We present a search for binary neutron star mergers that produced gravitational-waves during the first observing run of Advanced LIGO and gamma-ray emission seen by either \textit{Swift}-BAT or Fermi-GBM, similar to GW170817 and GRB…

High Energy Astrophysical Phenomena · Physics 2019-06-11 Alexander H. Nitz , Alex B. Nielsen , Collin D. Capano

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

We present Very Large Array (VLA) and Atacama Large Millimeter/sub-millimeter Array ALMA radio observations of GW\,170817, the first Laser Interferometer Gravitational-wave Observatory (LIGO)/Virgo gravitational wave (GW) event from a…

In August 2017, the first detection of a binary neutron star merger, GW170817, made it possible to study neutron stars in compact binary systems using gravitational waves. Despite being the loudest gravitational wave event detected to date…

General Relativity and Quantum Cosmology · Physics 2023-01-24 Stephanie M. Brown , Collin D. Capano , Badri Krishnan

Short gamma-ray bursts are associated with binary neutron star mergers, which are multimessenger astronomical events that have been observed both in gravitational waves and in the multiband electromagnetic spectrum. Depending on the masses…

High Energy Astrophysical Phenomena · Physics 2023-01-10 Cecilia Chirenti , Simone Dichiara , Amy Lien , M. Coleman Miller , Robert Preece

Merging neutron star (NS) binaries may be detected by ground-based gravitational wave (GW) interferometers (e.g. LIGO/VIRGO) within this decade and may also generate electromagnetic radiation detectable by wide-field, fast imaging…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Dong Lai

We study the possibility of pre-merger localization of eccentric compact binary coalescences by second-generation gravitational-wave detector networks. Gravitational waves from eccentric binaries can be regarded as a sequence of pulses,…

High Energy Astrophysical Phenomena · Physics 2017-12-27 Koutarou Kyutoku , Naoki Seto

The discovery of a kilonova associated with the GW170817 binary neutron star merger had far-reaching implications for our understanding of several open questions in physics and astrophysics. Unfortunately, since then, only one robust binary…

High Energy Astrophysical Phenomena · Physics 2025-04-14 Ido Keinan , Iair Arcavi

We investigated the detection rates and early warning parameters of binary neutron star (BNS) populations with decihertz gravitational-wave observatories in a realistic detecting strategy. Assuming 4 years' operation of B-DECIGO, we based…

High Energy Astrophysical Phenomena · Physics 2022-07-28 Chang Liu , Yacheng Kang , Lijing Shao

We study in detail the f-mode secular instability for rapidly rotating neutron stars, putting emphasis on supermassive models which do not have a stable nonrotating counterpart. Such neutron stars are thought to be the generic outcome of…

General Relativity and Quantum Cosmology · Physics 2015-12-02 Daniela D. Doneva , Kostas D. Kokkotas , Pantelis Pnigouras

We propose a long-term strategy for detecting thermal neutrinos from the remnant of binary-neutron-star mergers with a future M-ton water-Cherenkov detector such as Hyper-Kamiokande. Monitoring >~2500 mergers within <~200 Mpc, we may be…

High Energy Astrophysical Phenomena · Physics 2018-05-07 Koutarou Kyutoku , Kazumi Kashiyama

Next-generation detectors are expected to be sensitive to postmerger signals from binary neutron star coalescences and thus to directly probe the remnant dynamics. We investigate the scientific potential of postmerger detections with the…

General Relativity and Quantum Cosmology · Physics 2022-05-23 Matteo Breschi , Rossella Gamba , Ssohrab Borhanian , Gregorio Carullo , Sebastiano Bernuzzi

We study high-energy emission from the mergers of neutron star binaries as electromagnetic counterparts to gravitational waves aside from short gamma-ray bursts. The mergers entail significant mass ejection, which interacts with the…

High Energy Astrophysical Phenomena · Physics 2015-04-23 Hajime Takami , Koutarou Kyutoku , Kunihito Ioka

The Square Kilometer Array will have the sensitivity, spatial resolution, and frequency resolution to provide new scientific knowledge of evolved stars. Four basic areas of scientific exploration are enhanced by the construction of the SKA:…

Astrophysics · Physics 2009-11-10 Kevin Marvel

At supranuclear densities, explored in the core of neutron stars, a strong phase transition from hadronic matter to more exotic forms of matter might be present. To test this hypothesis, binary neutron-star mergers offer a unique…

High Energy Astrophysical Phenomena · Physics 2020-10-02 Peter T. H. Pang , Tim Dietrich , Ingo Tews , Chris Van Den Broeck

Post-merger gravitational-wave emission from a binary neutron star merger carries crucial information about the equation of state (EoS) of matter at high temperatures. Current gravitational wave detectors have limited sensitivities at…

High Energy Astrophysical Phenomena · Physics 2025-05-29 Soham Mitra , Praveer Tiwari , Archana Pai

The masses of neutron stars in neutron star binaries are observed to fall in a narrow mass range around $\sim 1.33$ M$_{\odot}$. We explore the advantage of focusing on this region of the parameter space in gravitational wave searches. We…

High Energy Astrophysical Phenomena · Physics 2015-12-09 Imre Bartos , Szabolcs Marka