Constraints on the Model of Gamma-ray Bursts and Implications from GRB 221009A: GeV gamma rays v.s. High-energy Neutrinos
arXiv:2211.14200 · doi:10.3847/2041-8213/acaf5e
Abstract
Gamma-ray bursts (GRB) are generally believed to be efficient particle accelerators. In the presence of energetic protons in a GRB jet, interactions between these protons and intense radiation field of the GRB are supposed to induce electromagnetic cascade. Electrons/positrons generated in the cascade will produce an additional spectrum of robust feature, which is in the form of a power-law distribution up to GeV regime with an index of . We suggest that measurements of Fermi-LAT at GeV band can provide independent constraints on the key GRB model parameters such as the dissipation radius, the jet's bulk Lorentz factor, and the baryon loading factor. Taking GRB 221009A, the brightest GRB ever detected, as an example, we show that the constraints from GeV gamma-ray emission may be more stringent than that from the neutrino observation, providing us a deep insight into the origin of GRBs.
10 pages, 6 figures; comments are welcome
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Cited by in corpus (21)
- A tera-electronvolt afterglow from a narrow jet in an extremely bright gamma-ray burst 221009A
- Limits on Neutrino Emission from GRB 221009A from MeV to PeV using the IceCube Neutrino Observatory
- The IXPE view of GRB 221009A
- Multi-messenger model for the prompt emission from GRB 221009A
- Ultrahigh-energy cosmic-ray signature in GRB 221009A
- A Narrow Uniform Core with a Wide Structured Wing: Modeling the TeV and Multi-wavelength Afterglows of GRB 221009A
- Invisible Neutrino Decays as Origin of TeV Gamma Rays from GRB221009A
- Towards a model of photon-axion conversion in the host galaxy of GRB 221009A
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- Implication of Jet Physics from MeV Line Emission of GRB 221009A
- Implication of GRB 221009A: Can TeV Emission Come from the GRB Prompt Phase?
- Constraining the jet composition of GRB 221009A with the prompt TeV emission limit
- Swift/UVOT: 18 Years of Long GRB Discoveries and Advances
- The Multiwavelength Picture of GRB 221009A's Afterglow
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- Polarization Measurements as a Probe of Axion-Photon Coupling: a Study of GRB 221009A
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- Neutrinos from extreme astrophysical sources
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