Probing the magnetic field in the GW170817 outflow using H.E.S.S. observations

H. Abdalla; R. Adam; F. Aharonian; F. Ait Benkhali; E. O. Angüner; M. Arakawa; C. Arcaro; C. Armand; T. Armstrong; H. Ashkar; M. Backes; V. Baghmanyan; V. Barbosa-Martins; A. Barnacka; M. Barnard; Y. Becherini; D. Berge; K. Bernlöhr; R. Blackwell; M. Böttcher; C. Boisson; J. Bolmont; S. Bonnefoy; J. Bregeon; M. Breuhaus; F. Brun; P. Brun; M. Bryan; M. Büchele; T. Bulik; T. Bylund; S. Caroff; A. Carosi; S. Casanova; M. Cerruti; T. Chand; S. Chandra; A. Chen; G. Cotter; M. Curyło; I. D. Davids; J. Davies; C. Deil; J. Devin; P. Dewilt; L. Dirson; A. Djannati-Ataï; A. Dmytriiev; A. Donath; V. Doroshenko; J. Dyks; K. Egberts; F. Eichhorn; G. Emery; J. -P. Ernenwein; S. Eschbach; K. Feijen; S. Fegan; A. Fiasson; G. Fontaine; S. Funk; M. Füßling; S. Gabici; Y. A. Gallant; G. Giavitto; L. Giunti; D. Glawion; J. F. Glicenstein; D. Gottschall; M. -H. Grondin; J. Hahn; M. Haupt; G. Heinzelmann; G. Hermann; J. A. Hinton; W. Hofmann; C. Hoischen; T. L. Holch; M. Holler; M. Hörbe; D. Horns; D. Huber; H. Iwasaki; M. Jamrozy; D. Jankowsky; F. Jankowsky; A. Jardin-Blicq; V. Joshi; I. Jung-Richardt; M. A. Kastendieck; K. Katarzyński; M. Katsuragawa; U. Katz; D. Khangulyan; B. Khélifi; S. Klepser; W. Kluźniak; Nu. Komin; R. Konno; K. Kosack; D. Kostunin; M. Kreter; G. Lamanna; A. Lemière; M. Lemoine-Goumard; J.-P. Lenain; E. Leser; C. Levy; T. Lohse; I. Lypova; J. Mackey; J. Majumdar; D. Malyshev; V. Marandon; P. Marchegiani; A. Marcowith; A. Mares; G. Martí-Devesa; R. Marx; G. Maurin; P. J. Meintjes; R. Moderski; M. Mohamed; L. Mohrmann; C. Moore; P. Morris; E. Moulin; J. Muller; T. Murach; S. Nakashima; K. Nakashima; M. de Naurois; H. Ndiyavala; F. Niederwanger; J. Niemiec; L. Oakes; P. O'Brien; H. Odaka; S. Ohm; E. de Ona Wilhelmi; M. Ostrowski; M. Panter; R. D. Parsons; B. Peyaud; Q. Piel; S. Pita; V. Poireau; A. Priyana Noel; D. A. Prokhorov; H. Prokoph; G. Pühlhofer; M. Punch; A. Quirrenbach; S. Raab; R. Rauth; A. Reimer; O. Reimer; Q. Remy; M. Renaud; F. Rieger; L. Rinchiuso; C. Romoli; G. Rowell; B. Rudak; E. Ruiz-Velasco; V. Sahakian; S. Sailer; S. Saito; D. A. Sanchez; A. Santangelo; M. Sasaki; M. Scalici; R. Schlickeiser; F. Schüssler; A. Schulz; H. M. Schutte; U. Schwanke; S. Schwemmer; M. Seglar-Arroyo; M. Senniappan; A. S. Seyffert; N. Shafi; K. Shiningayamwe; R. Simoni; A. Sinha; H. Sol; A. Specovius; S. Spencer; M. Spir-Jacob; Ł. Stawarz; R. Steenkamp; C. Stegmann; C. Steppa; T. Takahashi; T. Tavernier; A. M. Taylor; R. Terrier; D. Tiziani; M. Tluczykont; L. Tomankova; C. Trichard; M. Tsirou; N. Tsuji; R. Tuffs; Y. Uchiyama; D. J. van der Walt; C. van Eldik; C. van Rensburg; B. van Soelen; G. Vasileiadis; J. Veh; C. Venter; P. Vincent; J. Vink; H. J. Völk; T. Vuillaume; Z. Wadiasingh; S. J. Wagner; J. Watson; F. Werner; R. White; A. Wierzcholska; R. Yang; H. Yoneda; M. Zacharias; R. Zanin; A. A. Zdziarski; A. Zech; J. Zorn; N. Żywucka; X. Rodrigues

doi:10.3847/2041-8213/ab8b59

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Probing the magnetic field in the GW170817 outflow using H.E.S.S. observations

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Probing the magnetic field in the GW170817 outflow using H.E.S.S. observations

H. Abdalla, R. Adam, F. Aharonian, F. Ait Benkhali, E. O. Angüner, M. Arakawa, C. Arcaro, C. Armand, T. Armstrong, H. Ashkar, …

The Astrophysical Journal Letters, Vol.894(2)

2020

DOI: https://doi.org/10.3847/2041-8213/ab8b59

Abstract

Gamma-ray transient sources

Stellar mergers

Gamma-ray bursts

Gamma-ray astronomy

Ejecta

1853

2157

629

628

453

High Energy Astrophysical Phenomena

The detection of the first electromagnetic counterpart to the binary neutron star (BNS) merger remnant GW170817 established the connection between short $\gamma$-ray bursts and BNS mergers. It also confirmed the forging of heavy elements in the ejecta (a so-called $kilonova$) via the $r-process\ nucleosynthesis$. The appearance of nonthermal radio and X-ray emission, as well as the brightening, which lasted more than 100 days, were somewhat unexpected. Current theoretical models attempt to explain this temporal behavior as either originating from a relativistic off-axis jet or a kilonova-like outflow. In either scenario, there is some ambiguity regarding how much energy is transported in the nonthermal electrons versus the magnetic field of the emission region. Combining the Very Large Array (radio) and Chandra (X-ray) measurements with observations in the GeV-TeV domain can help break this ambiguity, almost independently of the assumed origin of the emission. Here we report for the first time on deep H.E.S.S. observations of GW170817/GRB 170817A between 124 and 272 days after the BNS merger with the full H.E.S.S. array of telescopes, as well as on an updated analysis of the prompt (<5 days) observations with the upgraded H.E.S.S. phase-I telescopes. We discuss implications of the H.E.S.S. measurement for the magnetic field in the context of different source scenarios.

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Title: Probing the magnetic field in the GW170817 outflow using H.E.S.S. observations
Creators - without role: H. Abdalla - North-West University
R. Adam - Centre National de la Recherche Scientifique
F. Aharonian - Max Planck Institute for Nuclear Physics
F. Ait Benkhali
E. O. Angüner - Aix-Marseille Université
M. Arakawa - Rikkyo University
C. Arcaro - North-West University
C. Armand - Laboratoire d’Annecy de Physique des Particules
T. Armstrong - University of Oxford
H. Ashkar - Université Paris-Saclay
M. Backes - University of Namibia
V. Baghmanyan - Institute of Nuclear Physics, Polish Academy of Sciences
V. Barbosa-Martins
A. Barnacka - Jagiellonian University
M. Barnard - North-West University
Y. Becherini - Linnaeus University
D. Berge
K. Bernlöhr - Max Planck Institute for Nuclear Physics
R. Blackwell - University of Adelaide
M. Böttcher - North-West University
C. Boisson - Délégation Paris 7
J. Bolmont - Laboratoire de Physique Nucléaire et de Hautes Énergies
S. Bonnefoy
J. Bregeon - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Breuhaus - Max Planck Institute for Nuclear Physics
F. Brun - Institut de Recherche sur les Lois Fondamentales de l'Univers
P. Brun - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
M. Bryan - University of Amsterdam
M. Büchele - Friedrich-Alexander-Universität Erlangen-Nürnberg
T. Bulik - University of Warsaw
T. Bylund - Linnaeus University
S. Caroff - Laboratoire de Physique Nucléaire et de Hautes Énergies
A. Carosi - Laboratoire d’Annecy de Physique des Particules
S. Casanova - Institute of Nuclear Physics, Polish Academy of Sciences
M. Cerruti - Sorbonne Paris Cité
T. Chand - North-West University
S. Chandra - North-West University
A. Chen - University of the Witwatersrand
G. Cotter - University of Oxford
M. Curyło - University of Warsaw
I. D. Davids - University of Namibia
J. Davies - University of Oxford
C. Deil - Max Planck Institute for Nuclear Physics
J. Devin - Laboratoire de Physique des deux infinis Bordeaux
P. Dewilt - University of Adelaide
L. Dirson - Universität Hamburg
A. Djannati-Ataï - AstroParticule et Cosmologie
A. Dmytriiev - Université Paris Sciences et Lettres
A. Donath - Max Planck Institute for Nuclear Physics
V. Doroshenko - University of Tübingen
J. Dyks - Polish Academy of Sciences
K. Egberts - University of Potsdam
F. Eichhorn - Friedrich-Alexander-Universität Erlangen-Nürnberg
G. Emery - Laboratoire de Physique Nucléaire et de Hautes Énergies
J. -P. Ernenwein - Aix-Marseille Université
S. Eschbach - Friedrich-Alexander-Universität Erlangen-Nürnberg
K. Feijen - University of Adelaide
S. Fegan - Laboratoire Leprince-Ringuet
A. Fiasson - Laboratoire d’Annecy de Physique des Particules
G. Fontaine - Laboratoire Leprince-Ringuet
S. Funk - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Füßling
S. Gabici - Université Paris Cité
Y. A. Gallant - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
G. Giavitto
L. Giunti - Délégation Paris 7
D. Glawion - Heidelberg University
J. F. Glicenstein - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
D. Gottschall - University of Tübingen
M. -H. Grondin - Laboratoire de Physique des deux infinis Bordeaux
J. Hahn - Max Planck Institute for Nuclear Physics
M. Haupt
G. Heinzelmann - Universität Hamburg
G. Hermann - Max Planck Institute for Nuclear Physics
J. A. Hinton - Max Planck Institute for Nuclear Physics
W. Hofmann - Max Planck Institute for Nuclear Physics
C. Hoischen - University of Potsdam
T. L. Holch - Humboldt-Universität zu Berlin
M. Holler - Universität Innsbruck
M. Hörbe - University of Oxford
D. Horns - Universität Hamburg
D. Huber - Universität Innsbruck
H. Iwasaki - Rikkyo University
M. Jamrozy - Jagiellonian University
D. Jankowsky - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Jankowsky - Heidelberg University
A. Jardin-Blicq - Max Planck Institute for Nuclear Physics
V. Joshi - Friedrich-Alexander-Universität Erlangen-Nürnberg
I. Jung-Richardt - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. A. Kastendieck - Universität Hamburg
K. Katarzyński - Nicolaus Copernicus University
M. Katsuragawa - Kavli Institute for the Physics and Mathematics of the Universe
U. Katz - Friedrich-Alexander-Universität Erlangen-Nürnberg
D. Khangulyan - Rikkyo University
B. Khélifi - Université Paris Cité
S. Klepser
W. Kluźniak - Nicolaus Copernicus Astronomical Center
Nu. Komin - University of the Witwatersrand
R. Konno
K. Kosack - Institut de Recherche sur les Lois Fondamentales de l'Univers
D. Kostunin
M. Kreter - North-West University
G. Lamanna - Université Grenoble Alpes
A. Lemière - Délégation Paris 7
M. Lemoine-Goumard - Institut National de Physique Nucléaire et de Physique des Particules
J.-P. Lenain - Laboratoire de Physique Nucléaire et de Hautes Énergies
E. Leser - University of Potsdam
C. Levy - Sorbonne Paris Cité
T. Lohse - Humboldt-Universität zu Berlin
I. Lypova
J. Mackey - Dublin Institute For Advanced Studies
J. Majumdar
D. Malyshev - University of Tübingen
D. Malyshev - University of Tübingen
V. Marandon - Max Planck Institute for Nuclear Physics
P. Marchegiani
A. Marcowith - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
A. Mares - Laboratoire de Physique des deux infinis Bordeaux
G. Martí-Devesa - Universität Innsbruck
R. Marx - Max Planck Institute for Nuclear Physics
G. Maurin - Centre National de la Recherche Scientifique
P. J. Meintjes - University of the Free State
R. Moderski - Polish Academy of Sciences
M. Mohamed - Heidelberg University
L. Mohrmann - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. Moore - University of Leicester
P. Morris - University of Oxford
E. Moulin - Université Paris-Saclay
J. Muller - Laboratoire Leprince-Ringuet
T. Murach
S. Nakashima - Nippon Soken
K. Nakashima - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. de Naurois - Centre National de la Recherche Scientifique
H. Ndiyavala - North-West University
F. Niederwanger - Universität Innsbruck
J. Niemiec - Institute of Nuclear Physics, Polish Academy of Sciences
L. Oakes - Humboldt-Universität zu Berlin
P. O'Brien
H. Odaka - The University of Tokyo
S. Ohm
E. de Ona Wilhelmi
M. Ostrowski - Jagiellonian University
M. Panter - Max Planck Institute for Nuclear Physics
R. D. Parsons - Max Planck Institute for Nuclear Physics
B. Peyaud - Université Paris-Saclay
Q. Piel - Laboratoire d’Annecy de Physique des Particules
S. Pita - Sorbonne Paris Cité
V. Poireau - Laboratoire d’Annecy de Physique des Particules
A. Priyana Noel - Jagiellonian University
D. A. Prokhorov - University of Amsterdam
H. Prokoph
G. Pühlhofer - University of Tübingen
M. Punch - Délégation Paris 7
A. Quirrenbach - Heidelberg University
S. Raab - Friedrich-Alexander-Universität Erlangen-Nürnberg
R. Rauth - Universität Innsbruck
A. Reimer - Universität Innsbruck
O. Reimer - Universität Innsbruck
Q. Remy - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Renaud - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
F. Rieger - Max Planck Institute for Nuclear Physics
L. Rinchiuso - Université Paris-Saclay
C. Romoli - Max Planck Institute for Nuclear Physics
G. Rowell - University of Adelaide
B. Rudak - Nicolaus Copernicus Astronomical Center
E. Ruiz-Velasco - Max Planck Institute for Nuclear Physics
V. Sahakian - A. Alikhanyan National Laboratory
S. Sailer - Max Planck Institute for Nuclear Physics
S. Saito - Rikkyo University
D. A. Sanchez - Centre National de la Recherche Scientifique
A. Santangelo - University of Tübingen
M. Sasaki - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Scalici - University of Tübingen
R. Schlickeiser - Ruhr University Bochum
F. Schüssler
A. Schulz
H. M. Schutte - North-West University
U. Schwanke - Humboldt-Universität zu Berlin
S. Schwemmer - Heidelberg University
M. Seglar-Arroyo - Institut de Recherche sur les Lois Fondamentales de l'Univers
M. Senniappan - Linnaeus University
A. S. Seyffert - North-West University
N. Shafi - University of the Witwatersrand
K. Shiningayamwe - University of Namibia
R. Simoni - University of Amsterdam
A. Sinha - Université Paris Cité
H. Sol - Université Paris Sciences et Lettres
A. Specovius - Friedrich-Alexander-Universität Erlangen-Nürnberg
S. Spencer - University of Oxford
M. Spir-Jacob - Université Paris Cité
Ł. Stawarz - Jagiellonian University
R. Steenkamp - University of Namibia
C. Stegmann - University of Potsdam
C. Steppa - University of Potsdam
T. Takahashi - Kavli Institute for the Physics and Mathematics of the Universe
T. Tavernier - Institut de Recherche sur les Lois Fondamentales de l'Univers
A. M. Taylor
R. Terrier - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
D. Tiziani - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Tluczykont - Universität Hamburg
L. Tomankova - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. Trichard - École Polytechnique
M. Tsirou - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
N. Tsuji - Rikkyo University
R. Tuffs - Max Planck Institute for Nuclear Physics
Y. Uchiyama - Rikkyo University
D. J. van der Walt - North-West University
C. van Eldik - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. van Rensburg - North-West University
B. van Soelen - University of the Free State
G. Vasileiadis - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
J. Veh - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. Venter - North-West University
P. Vincent - Sorbonne Université
J. Vink - University of Amsterdam
H. J. Völk - Max Planck Institute for Nuclear Physics
T. Vuillaume - Laboratoire d’Annecy de Physique des Particules
Z. Wadiasingh - North-West University
S. J. Wagner - Heidelberg University
J. Watson - University of Oxford
F. Werner - Max Planck Institute for Nuclear Physics
R. White - Max Planck Institute for Nuclear Physics
A. Wierzcholska - Heidelberg University
R. Yang - Max Planck Institute for Nuclear Physics
H. Yoneda - Kavli Institute for the Physics and Mathematics of the Universe
M. Zacharias - North-West University
R. Zanin - Max Planck Institute for Nuclear Physics
A. A. Zdziarski - Nicolaus Copernicus Astronomical Center
A. Zech - Centre National de la Recherche Scientifique
J. Zorn - Max Planck Institute for Nuclear Physics
N. Żywucka - North-West University
X. Rodrigues
Publication Details: The Astrophysical Journal Letters, Vol.894(2)
Identifiers: 9938917209311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: insu-03713189