Related papers: What Powered the Optical Transient AT2017gfo Assoc…

A long-lived remnant neutron star after GW170817 inferred from its associated kilonova

The successful joint observation of the gravitational wave event GW170817 and its multi-wavelength electromagnetic counterparts first enables human to witness a definite merger event of two neutron stars (NSs). This historical event…

High Energy Astrophysical Phenomena · Physics 2018-07-25 Yun-Wei Yu , Liang-Duan Liu , Zi-Gao Dai

AT2017gfo: an anisotropic and three-component kilonova counterpart of GW170817

The detection of a kilo/macronova electromagnetic counterpart (AT2017gfo) of the first gravitational wave signal compatible with the merger of two neutron stars (GW170817) has confirmed the occurrence of r-process nucleosynthesis in this…

High Energy Astrophysical Phenomena · Physics 2017-12-13 Albino Perego , David Radice , Sebastiano Bernuzzi

Constraints on the ejecta of the GW170817 neutron-star merger from its electromagnetic emission

We present a simple analytic model, that captures the key features of the emission of radiation from material ejected by the merger of neutron stars (NS), and construct the multi-band and bolometric luminosity light curves of the transient…

High Energy Astrophysical Phenomena · Physics 2018-09-12 Eli Waxman , Eran Ofek , Doron Kushnir , Avishay Gal-Yam

Modeling GW170817 based on numerical relativity and its implications

Gravitational-wave observation together with a large number of electromagnetic observations shows that the source of the latest gravitational-wave event, GW170817, detected primarily by advanced LIGO, is the merger of a binary neutron star.…

High Energy Astrophysical Phenomena · Physics 2017-12-27 Masaru Shibata , Sho Fujibayashi , Kenta Hotokezaka , Kenta Kiuchi , Koutarou Kyutoku , Yuichiro Sekiguchi , Masaomi Tanaka

GW170817$-$the first observed neutron star merger and its kilonova: implications for the astrophysical site of the r-process

The first neutron star (NS) merger observed by advanced LIGO and Virgo, GW170817, and its fireworks of electromagnetic counterparts across the entire electromagnetic spectrum marked the beginning of multi-messenger astronomy and…

High Energy Astrophysical Phenomena · Physics 2019-12-24 Daniel M. Siegel

Neutron rich matter in the laboratory and in the heavens after GW170817

The historic observations of the neutron star merger GW170817 advanced our understanding of r-process nucleosynthesis and the equation of state (EOS) of neutron rich matter. Simple neutrino physics suggests that supernovae are not the site…

High Energy Astrophysical Phenomena · Physics 2019-11-04 C. J. Horowitz

AT2018kzr: the merger of an oxygen-neon white dwarf and a neutron star or black hole

We present detailed spectroscopic analysis of the extraordinarily fast-evolving transient AT2018kzr. The transient's observed lightcurve showed a rapid decline rate, comparable to the kilonova AT2017gfo. We calculate a self-consistent…

High Energy Astrophysical Phenomena · Physics 2020-07-27 James H. Gillanders , Stuart A. Sim , Stephen J. Smartt

Can a black hole-neutron star merger explain GW170817, AT2017gfo, GRB170817A?

The discovery of the compact binary coalescence in both gravitational waves and electromagnetic radiation marks a breakthrough in the field of multi-messenger astronomy and has improved our knowledge in a number of research areas. However,…

High Energy Astrophysical Phenomena · Physics 2019-11-15 Michael W. Coughlin , Tim Dietrich

GRB 170817A-GW170817-AT 2017gfo and the observations of NS-NS, NS-WD and WD-WD mergers

The LIGO-Virgo Collaboration has announced the detection of GW170817 and has associated it with GRB 170817A. These signals have been followed after 11 hours by the optical and infrared emission of AT 2017gfo. The origin of this complex…

High Energy Astrophysical Phenomena · Physics 2018-10-17 J. A. Rueda , R. Ruffini , Y. Wang , U. Barres de Almeida , C. L. Bianco , Y. Chen , R. V. Lobato , C. Maia , D. Primorac , R. Moradi , J. F. Rodriguez

Multi-messenger Observations of a Binary Neutron Star Merger

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst…

High Energy Astrophysical Phenomena · Physics 2017-10-25 LIGO Scientific Collaboration , Virgo Collaboration , Fermi GBM , INTEGRAL , IceCube Collaboration , AstroSat Cadmium Zinc Telluride Imager Team , IPN Collaboration , The Insight-Hxmt Collaboration , ANTARES Collaboration , The Swift Collaboration , AGILE Team , The 1M2H Team , The Dark Energy Camera GW-EM Collaboration , the DES Collaboration , The DLT40 Collaboration , GRAWITA , : , GRAvitational Wave Inaf TeAm , The Fermi Large Area Telescope Collaboration , ATCA , : , Australia Telescope Compact Array , ASKAP , : , Australian SKA Pathfinder , Las Cumbres Observatory Group , OzGrav , DWF , AST3 , CAASTRO Collaborations , The VINROUGE Collaboration , MASTER Collaboration , J-GEM , GROWTH , JAGWAR , Caltech- NRAO , TTU-NRAO , NuSTAR Collaborations , Pan-STARRS , The MAXI Team , TZAC Consortium , KU Collaboration , Nordic Optical Telescope , ePESSTO , GROND , Texas Tech University , SALT Group , TOROS , : , Transient Robotic Observatory of the South Collaboration , The BOOTES Collaboration , MWA , : , Murchison Widefield Array , The CALET Collaboration , IKI-GW Follow-up Collaboration , H. E. S. S. Collaboration , LOFAR Collaboration , LWA , : , Long Wavelength Array , HAWC Collaboration , The Pierre Auger Collaboration , ALMA Collaboration , Euro VLBI Team , Pi of the Sky Collaboration , The Chandra Team at McGill University , DFN , : , Desert Fireball Network , ATLAS , High Time Resolution Universe Survey , RIMAS , RATIR , SKA South Africa/MeerKAT

The Emergence of a Lanthanide-Rich Kilonova Following the Merger of Two Neutron Stars

We report the discovery and monitoring of the near-infrared counterpart (AT2017gfo) of a binary neutron-star merger event detected as a gravitational wave source by Advanced LIGO/Virgo (GW170817) and as a short gamma-ray burst by Fermi/GBM…

High Energy Astrophysical Phenomena · Physics 2017-10-17 N. R. Tanvir , A. J. Levan , C. Gonzalez-Fernandez , O. Korobkin , I. Mandel , S. Rosswog , J. Hjorth , P. D'Avanzo , A. S. Fruchter , C. L. Fryer , T. Kangas , B. Milvang-Jensen , S. Rosetti , D. Steeghs , R. T. Wollaeger , Z. Cano , C. M. Copperwheat , S. Covino , V. D'Elia , A. de Ugarte Postigo , P. A. Evans , W. P. Even , S. Fairhurst , R. Figuera Jaimes , C. J. Fontes , Y. I. Fujii , J. P. U. Fynbo , B. P. Gompertz , J. Greiner , G. Hodosan , M. J. Irwin , P. Jakobsson , U. G. Jorgensen , D. A. Kann , J. D. Lyman , D. Malesani , R. G. McMahon , A. Melandri , P. T. O'Brien , J. P. Osborne , E. Palazzi , D. A. Perley , E. Pian , S. Piranomonte , M. Rabus , E. Rol , A. Rowlinson , S. Schulze , P. Sutton , C. C. Thoene , K. Ulaczyk , D. Watson , K. Wiersema , R. A. M. J. Wijers

Heavy elements and electromagnetic transients from neutron star mergers

Compact binary mergers involving neutron stars can eject a fraction of their mass to space. Being extremely neutron rich, this material undergoes rapid neutron capture nucleosynthesis, and the resulting radioactivity powers fast,…

High Energy Astrophysical Phenomena · Physics 2023-05-26 S. Rosswog , O. Korobkin

Light Curves of the Neutron Star Merger GW170817/SSS17a: Implications for R-Process Nucleosynthesis

On 2017 August 17, gravitational waves were detected from a binary neutron star merger, GW170817, along with a coincident short gamma-ray burst, GRB170817A. An optical transient source, Swope Supernova Survey 17a (SSS17a), was subsequently…

High Energy Astrophysical Phenomena · Physics 2017-10-17 M. R. Drout , A. L. Piro , B. J. Shappee , C. D. Kilpatrick , J. D. Simon , C. Contreras , D. A. Coulter , R. J. Foley , M. R. Siebert , N. Morrell , K. Boutsia , F. Di Mille , T. W. -S. Holoien , D. Kasen , J. A. Kollmeier , B. F. Madore , A. J. Monson , A. Murguia-Berthier , Y. -C. Pan , J. X. Prochaska , E. Ramirez-Ruiz , A. Rest , C. Adams , K. Alatalo , E. Bañados , J. Baughman , T. C. Beers , R. A. Bernstein , T. Bitsakis , A. Campillay , T. T. Hansen , C. R. Higgs , A. P. Ji , G. Maravelias , J. L. Marshall , C. Moni Bidin , J. L. Prieto , K. C. Rasmussen , C. Rojas-Bravo , A. L. Strom , N. Ulloa , J. Vargas-González , Z. Wan , D. D. Whitten

Kilonovae

The coalescence of double neutron star (NS-NS) and black hole (BH)-NS binaries are prime sources of gravitational waves (GW) for Advanced LIGO/Virgo and future ground-based detectors. Neutron-rich matter released from such events undergo…

High Energy Astrophysical Phenomena · Physics 2020-01-08 Brian D. Metzger

Brightening X-ray/Optical/Radio Emission of GW170817/SGRB 170817A: Results of an Electron-Positron Wind from the Central Engine?

Recent follow-up observations of the binary neutron star (NS) merging event GW170817/SGRB 170817A reveal that its X-ray/optical/radio emissions are brightening continuously up to $\sim 100$ days post-merger. This late-time brightening is…

High Energy Astrophysical Phenomena · Physics 2018-04-02 Jin-Jun Geng , Zi-Gao Dai , Yong-Feng Huang , Xue-Feng Wu , Long-Biao Li , Bing Li , Yan-Zhi Meng

Kilonova from post-merger ejecta as an optical and near-infrared counterpart of GW170817

Recent detection of gravitational waves from a neutron star (NS) merger event GW170817 and identification of an electromagnetic counterpart provide a unique opportunity to study the physical processes in NS mergers. To derive properties of…

High Energy Astrophysical Phenomena · Physics 2017-10-17 Masaomi Tanaka , Yousuke Utsumi , Paolo A. Mazzali , Nozomu Tominaga , Michitoshi Yoshida , Yuichiro Sekiguchi , Tomoki Morokuma , Kentaro Motohara , Kouji Ohta , Koji S. Kawabata , Fumio Abe , Kentaro Aoki , Yuichiro Asakura , Stefan Baar , Sudhanshu Barway , Ian A. Bond , Mamoru Doi , Takuya Fujiyoshi , Hisanori Furusawa , Satoshi Honda , Yoichi Itoh , Miho Kawabata , Nobuyuki Kawai , Ji Hoon Kim , Chien-Hsiu Lee , Shota Miyazaki , Kumiko Morihana , Hiroki Nagashima , Takahiro Nagayama , Tatsuya Nakaoka , Fumiaki Nakata , Ryou Ohsawa , Tomohito Ohshima , Hirofumi Okita , Tomoki Saito , Takahiro Sumi , Akito Tajitsu , Jun Takahashi , Masaki Takayama , Yoichi Tamura , Ichi Tanaka , Tsuyoshi Terai , Paul J. Tristram , Naoki Yasuda , Tetsuya Zenko

The Dynamics of Binary Neutron Star Mergers and of GW170817

With the first observation of a binary neutron star merger through gravitational waves and light GW170817, compact binary mergers have now taken the center stage in nuclear astrophysics. They are thought to be one of the main astrophysical…

High Energy Astrophysical Phenomena · Physics 2020-02-11 David Radice , Sebastiano Bernuzzi , Albino Perego

A long-lived neutron star merger remnant in GW170817: constraints and clues from X-ray observations

Multi-messenger observations of GW170817 have not conclusively established whether the merger remnant is a black hole (BH) or a neutron star (NS). We show that a long-lived magnetized NS with a poloidal field $B\approx 10^{12}$G is fully…

High Energy Astrophysical Phenomena · Physics 2018-11-28 L. Piro , E. Troja , B. Zhang , G. Ryan , H. van Eerten , R. Ricci , M. H. Wieringa , A. Tiengo , N. R. Butler , S. B. Cenko , O. D. Fox , H. G. Kandrika , G. Novara , A. Rossi , T. Sakamoto

Radioactively-Powered Gamma-Ray Transient Associated with a Kilonova from Neutron Star Merger

AAssociation of GW170817/GRB170817A/AT2017gfo provides the first direct evidence for neutron star mergers as significant sources of $r$-process nucleosynthesis. A gamma-ray transient (GRT) would be powered by the radioactive decay of the…

High Energy Astrophysical Phenomena · Physics 2022-06-22 Meng-Hua Chen , Rui-Chong Hu , En-Wei Liang

A year in the life of GW170817: the rise and fall of a structured jet from a binary neutron star merger

We present the results of our year-long afterglow monitoring of GW170817, the first binary neutron star (NS) merger detected by advanced LIGO and advanced Virgo. New observations with the Australian Telescope Compact Array (ATCA) and the…

High Energy Astrophysical Phenomena · Physics 2019-08-15 E. Troja , H. van Eerten , G. Ryan , R. Ricci , J. M. Burgess , M. Wieringa , L. Piro , S. B. Cenko , T. Sakamoto