TY - JOUR
T1 - A structured jet explains the extreme GRB 221009A
AU - O'Connor, Brendan
AU - Troja, Eleonora
AU - Ryan, Geoffrey
AU - Beniamini, Paz
AU - van Eerten, Hendrik
AU - Granot, Jonathan
AU - Dichiara, Simone
AU - Ricci, Roberto
AU - Lipunov, Vladimir
AU - Gillanders, James H.
AU - Gill, Ramandeep
AU - Moss, Michael
AU - Anand, Shreya
AU - Andreoni, Igor
AU - Becerra, Rosa L.
AU - Buckley, David A.H.
AU - Butler, Nathaniel R.
AU - Cenko, Stephen B.
AU - Chasovnikov, Aristarkh
AU - Durbak, Joseph
AU - Francile, Carlos
AU - Hammerstein, Erica
AU - van der Horst, Alexander J.
AU - Kasliwal, Mansi M.
AU - Kouveliotou, Chryssa
AU - Kutyrev, Alexander S.
AU - Lee, William H.
AU - Srinivasaragavan, Gokul P.
AU - Topolev, Vladislav
AU - Watson, Alan M.
AU - Yang, Yuhan
AU - Zhirkov, Kirill
N1 - Publisher Copyright:
© 2023 The Authors.
PY - 2023/6/9
Y1 - 2023/6/9
N2 - Long-duration gamma-ray bursts (GRBs) are powerful cosmic explosions, signaling the death of massive stars. Among them, GRB 221009A is by far the brightest burst ever observed. Because of its enormous energy (Eiso ≈ 1055 erg) and proximity (z ≈ 0.15), GRB 221009A is an exceptionally rare event that pushes the limits of our theories. We present multiwavelength observations covering the first 3 months of its afterglow evolution. The x-ray brightness decays as a power law with slope ≈t-1.66, which is not consistent with standard predictions for jetted emission. We attribute this behavior to a shallow energy profile of the relativistic jet. A similar trend is observed in other energetic GRBs, suggesting that the most extreme explosions may be powered by structured jets launched by a common central engine.
AB - Long-duration gamma-ray bursts (GRBs) are powerful cosmic explosions, signaling the death of massive stars. Among them, GRB 221009A is by far the brightest burst ever observed. Because of its enormous energy (Eiso ≈ 1055 erg) and proximity (z ≈ 0.15), GRB 221009A is an exceptionally rare event that pushes the limits of our theories. We present multiwavelength observations covering the first 3 months of its afterglow evolution. The x-ray brightness decays as a power law with slope ≈t-1.66, which is not consistent with standard predictions for jetted emission. We attribute this behavior to a shallow energy profile of the relativistic jet. A similar trend is observed in other energetic GRBs, suggesting that the most extreme explosions may be powered by structured jets launched by a common central engine.
UR - http://www.scopus.com/inward/record.url?scp=85161105683&partnerID=8YFLogxK
U2 - 10.1126/sciadv.adi1405
DO - 10.1126/sciadv.adi1405
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C2 - 37285439
AN - SCOPUS:85161105683
SN - 2375-2548
VL - 9
SP - eadi1405
JO - Science advances
JF - Science advances
IS - 23
M1 - eadi1405
ER -