A tera-electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst
Some gamma-ray bursts (GRBs) have a tera-electron volt (TeV) afterglow, but the early onset of this has not been observed. We report observations with the Large High Altitude Air Shower Observatory (LHAASO) of the bright GRB 221009A, which serendipitously occurred within the instrument's field...
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th-mahidol.880612023-07-24T01:02:19Z A tera-electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst Cao Z. Mahidol University Multidisciplinary Some gamma-ray bursts (GRBs) have a tera-electron volt (TeV) afterglow, but the early onset of this has not been observed. We report observations with the Large High Altitude Air Shower Observatory (LHAASO) of the bright GRB 221009A, which serendipitously occurred within the instrument's field of view. More than 64,000 photons >0.2 TeV were detected within the first 3000 seconds. The TeV flux began several minutes after the GRB trigger and then rose to a peak ~10 seconds later. This was followed by a decay phase, which became more rapid ~650 seconds after the peak. We interpret the emission using a model of a relativistic jet with half-opening angle of ~0.8°. This is consistent with the core of a structured jet and could explain the high isotropic energy of this GRB. 2023-07-23T18:02:18Z 2023-07-23T18:02:18Z 2023-06-30 Article Science (New York, N.Y.) Vol.380 No.6652 (2023) , 1390-1396 10.1126/science.adg9328 10959203 37289911 2-s2.0-85164234684 https://repository.li.mahidol.ac.th/handle/123456789/88061 SCOPUS |
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Multidisciplinary Cao Z. A tera-electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst |
| description |
Some gamma-ray bursts (GRBs) have a tera-electron volt (TeV) afterglow, but the early onset of this has not been observed. We report observations with the Large High Altitude Air Shower Observatory (LHAASO) of the bright GRB 221009A, which serendipitously occurred within the instrument's field of view. More than 64,000 photons >0.2 TeV were detected within the first 3000 seconds. The TeV flux began several minutes after the GRB trigger and then rose to a peak ~10 seconds later. This was followed by a decay phase, which became more rapid ~650 seconds after the peak. We interpret the emission using a model of a relativistic jet with half-opening angle of ~0.8°. This is consistent with the core of a structured jet and could explain the high isotropic energy of this GRB. |
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Mahidol University |
| author_facet |
Mahidol University Cao Z. |
| format |
Article |
| author |
Cao Z. |
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Cao Z. |
| title |
A tera-electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst |
| title_short |
A tera-electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst |
| title_full |
A tera-electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst |
| title_fullStr |
A tera-electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst |
| title_full_unstemmed |
A tera-electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst |
| title_sort |
tera-electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst |
| publishDate |
2023 |
| url |
https://repository.li.mahidol.ac.th/handle/123456789/88061 |
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1781414684991160320 |