SVOM GRB 250314A at z $\simeq$ 7.3: an exploding star in the era of reionization

B Cordier; J.Y Wei; N.R Tanvir; S.D Vergani; D.B Malesani; J.P.U Fynbo; A de Ugarte Postigo; A Saccardi; F Daigne; J.-L Atteia; O Godet; D Götz; Y.L Qiu; S Schanne; L.P Xin; B Zhang; S.N Zhang; A.J Nayana; L Piro; B Schneider; A.J Levan; A.L Thakur; Z.P Zhu; G Corcoran; N.A Rakotondrainibe; V d'Elia; D Turpin; J.F. Agüí Fernández; M.A Aloy; J An; M Bai; S Basa; M.G Bernardini; A Bochenek; R Brivio; M Brunet; G Bruni; S.B Cenko; Q Cheng; A Chrimes; L Christensen; A Claret; A Coleiro; L Cotter; S Crepaldi; J.S Deng; M Dimple; Y.W Dong; D Dornic; P.A.E Evans; R.A.J Eyles-Ferris; H Fausey; M Ferro; L Galbany; M Garnichey; G Gianfagna; B.P Gompertz; H Goto; N Habeeb; P.Y Han; X.H Han; D.H Hartmann; K.E Heintz; J.Y Hu; M.H Huang; L Izzo; P Jakobsson; J.A Kennea; C Lachaud; T Laskar; D Li; H.L Li; R.Z Li; X Liu; Y Liu; G Lombardi; H Louvin; P. Maggi; T Maiolino; Q.Y Mao; A Martin-Carrillo; K Mercier; P O'Brien; J.T Palmerio; P Petitjean; D.L.A Pieterse; F Piron; G Pugliese; B.C Rayson; T Reynolds; F Robinet; A Rossi; R Salvaterra; C.C Thöne; B Topçu; C.W Wang; J Wang; Y Wang; C Wu; S.L Xiong; D Xu; H.N Yang; W.M Yuan; Y.H Zhang; X.F Zhang; S.J Zheng

doi:10.1051/0004-6361/202556580

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$SVOM GRB 250314A at z $\simeq$ 7.3: an exploding star in the era of reionization$

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SVOM GRB 250314A at z $\simeq$ 7.3: an exploding star in the era of reionization

B Cordier, J.Y Wei, N.R Tanvir, S.D Vergani, D.B Malesani, J.P.U Fynbo, A de Ugarte Postigo, A Saccardi, F Daigne, J.-L Atteia, …

Astronomy & Astrophysics - A&A, Vol.704

2025

DOI: https://doi.org/10.1051/0004-6361/202556580

Résumé

gamma-ray burst: general

galaxies: high-redshift

gamma-ray burst: individual: GRB250314A

High Energy Astrophysical Phenomena

Most long Gamma-ray bursts originate from a rare type of massive stellar explosion. Their afterglows, while rapidly fading, can be initially extremely luminous at optical/near-infrared wavelengths, making them detectable at large cosmological distances. Here we report the detection and observations of GRB 250314A by the SVOM satellite and the subsequent follow-up campaign with the near-infrared afterglow discovery and the spectroscopic measurements of its redshift z $\simeq$ 7.3 . This burst happened when the Universe was only $\sim$ 5% of its current age. We discuss the signature of these rare events within the context of the SVOM operating model, and the ways to optimize their identification with adapted ground follow-up observation strategies.

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Titre: SVOM GRB 250314A at z $\simeq$ 7.3: an exploding star in the era of reionization
Créateurs - sans rôle: B Cordier - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
J.Y Wei - University of Chinese Academy of Sciences
N.R Tanvir - University of Leicester
S.D Vergani - Université Paris Sciences et Lettres
D.B Malesani - Radboud University Nijmegen
J.P.U Fynbo - Dawn Research
A de Ugarte Postigo - Aix-Marseille Université
A Saccardi - Astrophysique, Instrumentation et Modélisation
F Daigne - Institut d'Astrophysique de Paris
J.-L Atteia - Centre National de la Recherche Scientifique
O Godet - Université de Toulouse
D Götz - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
Y.L Qiu - Chinese Academy of Sciences
S Schanne - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
L.P Xin - National Astronomical Observatories
B Zhang - University of Nevada, Reno
S.N Zhang - Chinese Academy of Sciences
A.J Nayana
L Piro - Institute for Space Astrophysics and Planetology
B Schneider - Aix-Marseille Université
A.J Levan - University of Warwick
A.L Thakur - Institute for Space Astrophysics and Planetology
Z.P Zhu - Chinese Academy of Sciences
G Corcoran - University College Dublin
N.A Rakotondrainibe - Aix-Marseille Université
V d'Elia
D Turpin - Centre National de la Recherche Scientifique
J.F. Agüí Fernández - Calar Alto Observatory
M.A Aloy - Universitat de València
J An - Chinese Academy of Sciences
M Bai - Chinese Academy of Sciences
S Basa - Aix-Marseille Université
M.G Bernardini - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
A Bochenek - Liverpool John Moores University
R Brivio - Brera Astronomical Observatory
M Brunet - Université Fédérale de Toulouse Midi-Pyrénées
G Bruni - Institute for Space Astrophysics and Planetology
S.B Cenko - Goddard Space Flight Center
Q Cheng - National Astronomical Observatories
A Chrimes - European Space Agency
L Christensen - University of Copenhagen
A Claret - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
A Coleiro - Centre National de la Recherche Scientifique
L Cotter - University College Dublin
S Crepaldi - Centre National d'Études Spatiales
J.S Deng - Astronomy and Space
M Dimple
Y.W Dong - Chinese Academy of Sciences
D Dornic - Centre de physique des particules de Marseille
P.A.E Evans - University of Leicester
R.A.J Eyles-Ferris - University of Leicester
H Fausey - Baylor University
M Ferro - Brera Astronomical Observatory
L Galbany - Institut d'Estudis Espacials de Catalunya
M Garnichey - Centre National de la Recherche Scientifique
G Gianfagna - Institute for Space Astrophysics and Planetology
B.P Gompertz - University of Birmingham
H Goto - Astrophysique, Instrumentation et Modélisation
N Habeeb - University of Leicester
P.Y Han - Huazhong University of Science and Technology
X.H Han - Chinese Academy of Sciences
D.H Hartmann - Clemson University
K.E Heintz - Dawn Research
J.Y Hu - National Astronomical Observatories
M.H Huang - National Astronomical Observatories
L Izzo - Astronomical Observatory of Capodimonte
P Jakobsson - Kavli Institute for Particle Astrophysics and Cosmology
J.A Kennea - Pennsylvania State University
C Lachaud - Université Paris Cité
T Laskar - University of Utah
D Li - Shanghai Micro Satellite Engineering Center
H.L Li
R.Z Li - Yunnan Observatories
X Liu - Chinese Academy of Sciences
Y Liu - National Space Science Center
G Lombardi - Council for British Research in the Levant
H Louvin - Institut de Recherche sur les Lois Fondamentales de l'Univers
P. Maggi - Observatoire astronomique de Strasbourg
T Maiolino - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
Q.Y Mao - Shanghai Micro Satellite Engineering Center
A Martin-Carrillo - University College Dublin
K Mercier - Centre National d'Études Spatiales
P O'Brien
J.T Palmerio - Astrophysique, Instrumentation et Modélisation
P Petitjean - Centre National de la Recherche Scientifique
D.L.A Pieterse - Radboud University Nijmegen
F Piron - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
G Pugliese - Astronomical Institute of the Slovak Academy of Sciences
B.C Rayson - University of Leicester
T Reynolds - DAWN Center for Independent Living
F Robinet - Institut National de Physique Nucléaire et de Physique des Particules
A Rossi - National Institute for Astrophysics
R Salvaterra - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
C.C Thöne - Evgeni Kharadze Georgian National Astrophysical Observatory
B Topçu - University of Bath
C.W Wang - Chinese Academy of Sciences
J Wang - National Astronomical Observatories
Y Wang - Purple Mountain Observatory
C Wu - Chinese Academy of Sciences
S.L Xiong - Chinese Academy of Sciences
D Xu
H.N Yang
W.M Yuan
Y.H Zhang
X.F Zhang
S.J Zheng
Détails de publication: Astronomy & Astrophysics - A&A, Vol.704
Note de subvention: Administration spatiale nationale chinoise (CNSA)
Identifiants: 99161666709311
Unité académique: Laboratoire Univers et Particules de Montpellier - LUPM
Langue: English
Type de ressource: Journal article
Champs locaux: hal-05201306