Related papers: Kilonova and Optical Afterglow from Binary Neutron…

Filling the Mass Gap: How Kilonova Observations can Unveil the Nature of the Compact Object Merging with the Neutron Star

In this letter we focus on the peculiar case of a coalescing compact-object binary whose chirp mass is compatible both with a neutron star-neutron star and black hole-neutron star system, with the black hole in the $\sim 3-5M_\odot$ range…

High Energy Astrophysical Phenomena · Physics 2020-01-08 Claudio Barbieri , Om Sharan Salafia , Monica Colpi , Giancarlo Ghirlanda , Albino Perego , Alberto Colombo

Optimizing Cadences with Realistic Light Curve Filtering for Serendipitous Kilonova Discovery with Vera Rubin Observatory

Current and future optical and near-infrared wide-field surveys have the potential of finding kilonovae, the optical and infrared counterparts to neutron star mergers, independently of gravitational-wave or high-energy gamma-ray burst…

High Energy Astrophysical Phenomena · Physics 2022-01-05 Igor Andreoni , Michael W. Coughlin , Mouza Almualla , Eric C. Bellm , Federica B. Bianco , Mattia Bulla , Antonino Cucchiara , Tim Dietrich , Ariel Goobar , Erik C. Kool , Xiaolong Li , Fabio Ragosta , Ana Sagues-Carracedo , Leo P. Singer

Late afterglows of GW/GRB 170817A

The gamma-ray burst that followed the first detection of gravitational waves from the merger of a Binary Neutron Stars and its low energy counterparts were in many respects unusual and challenge our understanding of mechanisms involved in…

High Energy Astrophysical Phenomena · Physics 2018-11-20 Houri Ziaeepour

Kilonova evolution -- the rapid emergence of spectral features

Kilonovae (KNe) are one of the fastest types of optical transients known, cooling rapidly in the first few days following their neutron-star merger origin. We show here that KN spectral features go through rapid recombination transitions,…

High Energy Astrophysical Phenomena · Physics 2024-08-14 Albert Sneppen , Darach Watson , James H. Gillanders , Kasper E. Heintz

Impact of Massive Binary Star and Cosmic Evolution on Gravitational Wave Observations I: Black Hole-Neutron Star Mergers

Mergers of black hole-neutron star (BHNS) binaries have now been observed by GW detectors with the recent announcement of GW200105 and GW200115. Such observations not only provide confirmation that these systems exist, but will also give…

High Energy Astrophysical Phenomena · Physics 2021-10-11 Floor S. Broekgaarden , Edo Berger , Coenraad J. Neijssel , Alejandro Vigna-Gómez , Debatri Chattopadhyay , Simon Stevenson , Martyna Chruslinska , Stephen Justham , Selma E. de Mink , Ilya Mandel

Electromagnetic emission from long-lived binary neutron star merger remnants II: lightcurves and spectra

Recent observations indicate that in a large fraction of binary neutron star (BNS) mergers a long-lived neutron star (NS) may be formed rather than a black hole. Unambiguous electromagnetic (EM) signatures of such a scenario would strongly…

High Energy Astrophysical Phenomena · Physics 2016-03-16 Daniel M. Siegel , Riccardo Ciolfi

The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. II. UV, Optical, and Near-IR Light Curves and Comparison to Kilonova Models

We present UV, optical, and NIR photometry of the first electromagnetic counterpart to a gravitational wave source from Advanced LIGO/Virgo, the binary neutron star merger GW170817. Our data set extends from the discovery of the optical…

High Energy Astrophysical Phenomena · Physics 2017-10-17 P. S. Cowperthwaite , E. Berger , V. A. Villar , B. D. Metzger , M. Nicholl , R. Chornock , P. K. Blanchard , W. Fong , R. Margutti , M. Soares-Santos , K. D. Alexander , S. Allam , J. Annis , D. Brout , D. A. Brown , R. E. Butler , H. -Y. Chen , H. T. Diehl , Z. Doctor , M. R. Drout , T. Eftekhari , B. Farr , D. A. Finley , R. J. Foley , J. A. Frieman , C. L. Fryer , J. García-Bellido , M. S. S. Gill , J. Guillochon , K. Herner , D. E. Holz , D. Kasen , R. Kessler , J. Marriner , T. Matheson , E. H. Neilsen, , E. Quataert , A. Palmese , A. Rest , M. Sako , D. M. Scolnic , N. Smith , D. L. Tucker , P. K. G. Williams , E. Balbinot , J. L. Carlin , E. R. Cook , F. Durret , T. S. Li , P. A. A. Lopes , A. C. C. Lourenço , J. L. Marshall , G. E. Medina , J. Muir , R. R. Muñoz , M. Sauseda , D. J. Schlegel , L. F. Secco , A. K. Vivas , W. Wester , A. Zenteno , Y. Zhang , T. M. C. Abbott , M. Banerji , K. Bechtol , A. Benoit-Lévy , E. Bertin , E. Buckley-Geer , D. L. Burke , D. Capozzi , A. Carnero Rosell , M. Carrasco Kind , F. J. Castander , M. Crocce , C. E. Cunha , C. B. D'Andrea , L. N. da Costa , C. Davis , D. L. DePoy , S. Desai , J. P. Dietrich , A. Drlica-Wagner , T. F. Eifler , A. E. Evrard , E. Fernandez , B. Flaugher , P. Fosalba , E. Gaztanaga , D. W. Gerdes , T. Giannantonio , D. A. Goldstein , D. Gruen , R. A. Gruendl , G. Gutierrez , K. Honscheid , B. Jain , D. J. James , T. Jeltema , M. W. G. Johnson , M. D. Johnson , S. Kent , E. Krause , R. Kron , K. Kuehn , N. Kuropatkin , O. Lahav , M. Lima , H. Lin , M. A. G. Maia , M. March , P. Martini , R. G. McMahon , F. Menanteau , C. J. Miller , R. Miquel , J. J. Mohr , E. Neilsen , R. C. Nichol , R. L. C. Ogando , A. A. Plazas , N. Roe , A. K. Romer , A. Roodman , E. S. Rykoff , E. Sanchez , V. Scarpine , R. Schindler , M. Schubnell , I. Sevilla-Noarbe , M. Smith , R. C. Smith , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , R. C. Thomas , M. A. Troxel , V. Vikram , A. R. Walker , R. H. Wechsler , J. Weller , B. Yanny , J. Zuntz

The afterglow and kilonova of the short GRB 160821B

GRB 160821B is a short duration gamma-ray burst (GRB) detected and localized by the Neil Gehrels Swift Observatory in the outskirts of a spiral galaxy at z=0.1613, at a projected physical offset of 16 kpc from the galaxy's center. We…

High Energy Astrophysical Phenomena · Physics 2019-08-27 E. Troja , A. J. Castro-Tirado , J. Becerra Gonzalez , Y. Hu , G. S. Ryan , S. B. Cenko , R. Ricci , G. Novara , R. Sanchez-Ramirez , J. A. Acosta-Pulido , M. D. Caballero Garcia , S. Guziy , S. Jeong , A. Y. Lien , I. Marquez , S. B. Pandey , I. H. Park , J. C. Tello , T. Sakamoto , I. V. Sokolov , V. V. Sokolov , A. Tiengo , A. F. Valeev , B. B. Zhang , S. Veilleux

Detectability of kilonovae in optical surveys: $post$-$mortem$ examination of the LVC O3 run follow-up

The detection of the binary neutron star merger GW170817 and the associated electromagnetic (EM) counterpart, the "kilonova" (kN) AT2017gfo, opened a new era in multi-messenger astronomy. However, despite many efforts, it has been proven…

High Energy Astrophysical Phenomena · Physics 2021-05-26 A. Sagués Carracedo , M. Bulla , U. Feindt , A. Goobar

Polarized kilonovae from black hole-neutron star mergers

We predict linear polarization for a radioactively-powered kilonova following the merger of a black hole and a neutron star. Specifically, we perform 3-D Monte Carlo radiative transfer simulations for two different models, both featuring a…

High Energy Astrophysical Phenomena · Physics 2020-12-16 M. Bulla , K. Kyutoku , M. Tanaka , S. Covino , J. R. Bruten , T. Matsumoto , J. R. Maund , V. Testa , K. Wiersema

Hours-long Near-UV/Optical Emission from Mildly Relativistic Outflows in Black Hole-Neutron Star Mergers

The ongoing LIGO-Virgo-KAGRA observing run O4 provides an opportunity to discover new multi-messenger events, including binary neutron star (BNS) mergers such as GW170817, and the highly anticipated first detection of a multi-messenger…

High Energy Astrophysical Phenomena · Physics 2023-08-09 Ore Gottlieb , Danat Issa , Jonatan Jacquemin-Ide , Matthew Liska , Alexander Tchekhovskoy , Francois Foucart , Daniel Kasen , Rosalba Perna , Eliot Quataert , Brian D. Metzger

$r$-process Nucleosynthesis and Kilonovae from Hypermassive Neutron Star Remnants

We investigate $r$-process nucleosynthesis and kilonova emission resulting from binary neutron star (BNS) mergers based on a three-dimensional (3D) general-relativistic magnetohydrodynamic (GRMHD) simulation of a hypermassive neutron star…

High Energy Astrophysical Phenomena · Physics 2022-11-16 Sanjana Curtis , Philipp Mösta , Zhenyu Wu , David Radice , Luke Roberts , Giacomo Ricigliano , Albino Perego

Electromagnetic counterparts of black hole-neutron star mergers: dependence on the neutron star properties

Detections of gravitational waves (GWs) may soon uncover the signal from the coalescence of a black hole - neutron star (BHNS) binary, that is expected to be accompanied by an electromagnetic (EM) signal. In this paper, we present a…

High Energy Astrophysical Phenomena · Physics 2020-01-29 C. Barbieri , O. S. Salafia , A. Perego , M. Colpi , G. Ghirlanda

Properties of Kilonovae from Dynamical and Post-Merger Ejecta of Neutron Star Mergers

Ejected material from neutron star mergers give rise to electromagnetic emission powered by radioactive decays of r-process nuclei, which is so called kilonova or macronova. While properties of the emission are largely affected by opacities…

High Energy Astrophysical Phenomena · Physics 2018-01-31 Masaomi Tanaka , Daiji Kato , Gediminas Gaigalas , Pavel Rynkun , Laima Radziute , Shinya Wanajo , Yuichiro Sekiguchi , Nobuyuki Nakamura , Hajime Tanuma , Izumi Murakami , Hiroyuki A. Sakaue

3D radiative transfer kilonova modelling for binary neutron star merger simulations

The detection of GW170817 and the accompanying electromagnetic counterpart, AT2017gfo, have provided an important set of observational constraints for theoretical models of neutron star mergers, nucleosynthesis, and radiative transfer for…

High Energy Astrophysical Phenomena · Physics 2023-03-08 Christine E. Collins , Andreas Bauswein , Stuart A. Sim , Vimal Vijayan , Gabriel Martínez-Pinedo , Oliver Just , Luke J. Shingles , Markus Kromer

Fast-transient Searches in Real Time with ZTFReST: Identification of Three Optically-discovered Gamma-ray Burst Afterglows and New Constraints on the Kilonova Rate

While optical surveys regularly discover slow transients like supernovae on their own, the most common way to discover extragalactic fast transients, fading away in a few nights, is via follow-up observations of gamma-ray burst and…

High Energy Astrophysical Phenomena · Physics 2021-09-29 Igor Andreoni , Michael W. Coughlin , Erik C. Kool , Mansi M. Kasliwal , Harsh Kumar , Varun Bhalerao , Ana Sagués Carracedo , Anna Y. Q. Ho , Peter T. H. Pang , Divita Saraogi , Kritti Sharma , Vedant Shenoy , Eric Burns , Tomás Ahumada , Shreya Anand , Leo P. Singer , Daniel A. Perley , Kishalay De , U. C. Fremling , Eric C. Bellm , Mattia Bulla , Arien Crellin-Quick , Tim Dietrich , Andrew Drake , Dmitry A. Duev , Ariel Goobar , Matthew J. Graham , David L. Kaplan , S. R. Kulkarni , Russ R. Laher , Ashish A. Mahabal , David L. Shupe , Jesper Sollerman , Richard Walters , Yuhan Yao

A search for kilonova radio flares in a sample of Swift/BAT short GRBs

The multi-messenger detection of GW170817 showed that binary neutron star (BNS) mergers are progenitors of (at least some) short gamma-ray bursts (GRBs), and that short GRB jets (and their afterglows) can have structures (and observational…

High Energy Astrophysical Phenomena · Physics 2023-07-04 Avery Eddins , Kyung-hwan Lee , Alessandra Corsi , Imre Bartos , Zsuzsanna Marka , Szabolcs Marka

Super-luminous supernovae from PESSTO

We present optical spectra and light curves for three hydrogen-poor super-luminous supernovae followed by the Public ESO Spectroscopic Survey of Transient Objects (PESSTO). Time series spectroscopy from a few days after maximum light to 100…

High Energy Astrophysical Phenomena · Physics 2016-01-14 M. Nicholl , S. J. Smartt , A. Jerkstrand , C. Inserra , J. P. Anderson , C. Baltay , S. Benetti , T. -W. Chen , N. Elias-Rosa , U. Feindt , M. Fraser , A. Gal-Yam , E. Hadjiyska , D. A. Howell , R. Kotak , A. Lawrence , G. Leloudas , S. Margheim , S. Mattila , R. McKinnon , M. McCrum , A. Mead , P. Nugent , D. Rabinowitz , A. Rest , K. W. Smith , J. Sollerman , M. Sullivan , F. Taddia , S. Valenti , E. S. Walker , D. R. Young

On the use of CHIME to Detect Long-Duration Radio Transients from Neutron Star Mergers

Short gamma-ray burst (SGRB) GRB 170817A was found to be related to a binary neutron star (BNS) merger. It is uncertain whether all SGRBs are caused by BNS mergers, and also under what conditions a BNS merger can cause a SGRB. As BNS…

High Energy Astrophysical Phenomena · Physics 2022-04-06 Minori Shikauchi , Kipp Cannon , Haoxiang Lin , Tomonori Totani , J. Richard Shaw

Spectroscopic identification of r-process nucleosynthesis in a double neutron star merger

The merger of two neutron stars is predicted to give rise to three major detectable phenomena: a short burst of gamma-rays, a gravitational wave signal, and a transient optical/near-infrared source powered by the synthesis of large amounts…

High Energy Astrophysical Phenomena · Physics 2017-10-19 E. Pian , P. D'Avanzo , S. Benetti , M. Branchesi , E. Brocato , S. Campana , E. Cappellaro , S. Covino , V. D'Elia , J. P. U. Fynbo , F. Getman , G. Ghirlanda , G. Ghisellini , A. Grado , G. Greco , J. Hjorth , C. Kouveliotou , A. Levan , L. Limatola , D. Malesani , P. A. Mazzali , A. Melandri , P. Moller , L. Nicastro , E. Palazzi , S. Piranomonte , A. Rossi , O. S. Salafia , J. Selsing , G. Stratta , M. Tanaka , N. R. Tanvir , L. Tomasella , D. Watson , S. Yang , L. Amati , L. A. Antonelli , S. Ascenzi , M. G. Bernardini , M. Boer , F. Bufano , A. Bulgarelli , M. Capaccioli , P. G. Casella , A. J. Castro-Tirado , E. Chassande-Mottin , R. Ciolfi , C. M. Copperwheat , M. Dadina , G. De Cesare , A. Di Paola , Y. Z. Fan , B. Gendre , G. Giuffrida , A. Giunta , L. K. Hunt , G. Israel , Z. -P. Jin , M. Kasliwal , S. Klose , M. Lisi , F. Longo , E. Maiorano , M. Mapelli , . Masetti , L. Nava , B. Patricelli , D. Perley , A. Pescalli , T. Piran , A. Possenti , L. Pulone , M. Razzano , R. Salvaterra , P. Schipani , M. Spera , A. Stamerra , L. Stella , G. Tagliaferri , V. Testa , E. Troja , M. Turatto , S. D. Vergani , D. Vergani