A tera–electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst
University of Science and Technology of China · Institute of High Energy Physics · +32 more institutions
Abstract
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…
Citation impact
- FWCI
- 35.06
- Percentile
- 100%
- References
- 64
Authors
278- ZCZ. CaoCorresponding
University of Science and Technology of China, Institute of High Energy Physics, Gansu Great Wall Electrical and Electronics Engineering Research Institute, University of Chinese Academy of Sciences
- FAF. Aharonian
Dublin Institute For Advanced Studies, Max Planck Institute for Nuclear Physics
- QAQier An
University of Science and Technology of China
- AAxikegu
Southwest Jiaotong University
- LBLixin Bai
Sichuan University
Topics & keywords
- Gamma-ray burst
- Afterglow
- Physics
- Jet (fluid)
- Astrophysics
- Observatory
- Gamma ray
- Flux (metallurgy)
- Affordable and clean energy
Funding
- NNNational Natural Science Foundation of China
- CAChinese Academy of Sciences
- GOGovernment of Jiangsu Province
- NSNational Science and Technology Development Agency
- NSNatural Science Foundation of Jiangsu Province
- NRNational Research Council of Thailand
- DODepartment of Science and Technology of Sichuan Province