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Related papers: Low-{\Gamma} jets from Compact Binary Mergers as C…

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Short gamma-ray bursts (GRBs) are believed to be produced by relativistic jets from mergers of neutron-stars (NS) or neutron-stars and black-holes (BH). If the Lorentz-factors $\Gamma$ of jets from compact-stellar-mergers follow a similar…

High Energy Astrophysical Phenomena · Physics 2016-10-05 Gavin P Lamb , Shiho Kobayashi

Binary neutron star mergers are considered to be the most favorable sources that produce electromagnetic (EM) signals associated with gravitational waves (GWs). These mergers are the likely progenitors of short duration gamma-ray bursts…

High Energy Astrophysical Phenomena · Physics 2017-10-26 Adithan Kathirgamaraju , Rodolfo Barniol Duran , Dimitrios Giannios

Compact object mergers are promising candidates for the progenitor system of short gamma-ray bursts (GRBs). Using gravitational wave (GW) triggers to identify a merger, any electromagnetic (EM) counterparts from the jet can be used to…

High Energy Astrophysical Phenomena · Physics 2019-05-22 Gavin P. Lamb , Shiho Kobayashi

A long-standing paradigm in astrophysics is that collisions- or mergers- of two neutron stars (NSs) form highly relativistic and collimated outflows (jets) powering gamma-ray bursts (GRBs) of short (< 2 s) duration. However, the…

Short gamma-ray bursts (GRBs) are explosive transients caused by binary mergers of compact objects containing at least one neutron star. Multi-wavelength afterglow observations provide constraints on the physical parameters of the jet, its…

We show the peak magnitude for orphan afterglows from the jets of gravitational wave (GW) detected black-hole/neutron star - neutron star (BH/NS-NS) mergers highly depends on the jet half-opening angle $\theta_j$. Short $\gamma$-ray bursts…

High Energy Astrophysical Phenomena · Physics 2017-10-18 Gavin P Lamb , Shiho Kobayashi

Binary neutron-star mergers have long been associated with short-duration gamma-ray bursts (GRBs). This connection was confirmed with the first coincident detection of gravitational waves together with electromagnetic radiation from…

High Energy Astrophysical Phenomena · Physics 2019-10-11 Antonios Nathanail , Oliver Porth , Luciano Rezzolla

The gravitational waves from the first binary neutron star merger, GW170817, were accompanied by a multi-wavelength electromagnetic counterpart, from $\gamma$-rays to radio. The accompanying gamma-rays, seems at first to confirm the…

High Energy Astrophysical Phenomena · Physics 2018-10-31 Ehud Nakar , Ore Gottlieb , Tsvi Piran , Mansi M. Kasliwal , Greg Hallinan

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

Inspiraling and merging binary neutron stars are not only important source of gravitational waves, but also promising candidates for coincident electromagnetic counterparts. These systems are thought to be progenitors of short gamma-ray…

High Energy Astrophysical Phenomena · Physics 2017-11-03 Milton Ruiz , Stuart L. Shapiro

The most popular model for short gamma-ray bursts (sGRBs) involves the coalescence of binary neutron stars. Because the progenitor is actually hidden from view, we must consider under which circumstances such merging systems are capable of…

To date GW170817, produced by a binary neutron star (BNS) merger, is the only gravitational wave event with an electromagnetic (EM) counterpart. It was associated with a prompt short gamma-ray burst (GRB), an optical kilonova, and the…

Neutron star binary mergers are strong sources of gravitational waves (GWs). Promising electromagnetic counterparts are short gamma-ray bursts (GRBs) but the emission is highly collimated. We propose that the scattering of the long-lasting…

High Energy Astrophysical Phenomena · Physics 2015-08-19 Shota Kisaka , Kunihito Ioka , Takashi Nakamura

Long-lasting emission of short gamma-ray bursts (GRBs) is crucial to reveal the physical origin of the central engine as well as to detect electromagnetic (EM) counterparts to gravitational waves (GWs) from neutron star binary mergers. We…

High Energy Astrophysical Phenomena · Physics 2017-09-20 Shota Kisaka , Kunihito Ioka , Takanori Sakamoto

Compact binary mergers may have already been observed as they are the leading model for short gamma-ray bursts (sGRBs). Radioactive decay within the ejecta from these mergers is expected to produce an infra-red flare, dubbed macronova (or…

High Energy Astrophysical Phenomena · Physics 2016-03-16 Assaf Horesh , Kenta Hotokezaka , Tsvi Piran , Ehud Nakar , Paul Hancock

The counter jet of a short gamma-ray burst (sGRB) has not yet been observed, while recent discoveries of gravitational waves (GWs) from a binary neutron star (NS) merger GW170817 and the associated sGRB 170817A have demonstrated that…

High Energy Astrophysical Phenomena · Physics 2018-03-28 Ryo Yamazaki , Kunihito Ioka , Takashi Nakamura

Neutron star (binary neutron star and neutron star - black hole) mergers are believed to produce short-duration gamma-ray bursts. They are also believed to be the dominant source of gravitational waves to be detected by the advanced LIGO…

High Energy Astrophysical Phenomena · Physics 2015-10-14 Chris L. Fryer , Krzysztoff Belczynski , Enrico Ramirez-Ruiz , Stephan Rosswog , Gang Shen , Andrew W. Steiner

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

Gravitational waves from a merger of two neutron stars (NSs) were discovered for the first time in GW170817, together with diverse electromagnetic (EM) counterparts. To make constraints on a relativistic jet from the NS merger, we calculate…

High Energy Astrophysical Phenomena · Physics 2018-04-10 Kunihito Ioka , Takashi Nakamura

Unlike mergers of two compact objects containing a neutron star (NS), binary black hole (BBH) mergers are not accompanied by the production of tidally disrupted material, and hence lack the most direct source of accretion to power a jet and…

High Energy Astrophysical Phenomena · Physics 2019-04-24 Rosalba Perna , Davide Lazzati , Will Farr
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