| Name: | Khushboo Sharma |
| Affiliation: | Aryabhatta research institute of observational sciences ,Nainital |
| Conference ID : | ASI2024_882 |
| Title : | Diffuse Neutrino Flux from Choked and Low-Luminosity GRBs |
| Authors : | Khushboo Sharma (1), Jagdish Chandra Joshi (1), Abhijit Roy (1) |
| Authors Affiliation: | 1) Aryabhatta Research institute of Observational Sciences, Nainital-263001, India |
| Mode of Presentation: | Poster |
| Abstract Category : | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract : | Gamma-ray bursts (GRBs) arise from cataclysmic astrophysical events, divided into long-duration (lasting ≥ 2 seconds) and short-duration bursts. We investigated two GRB subcategories: choked and low-luminosity (LL) GRBs, focusing on their potential to emit high-energy neutrinos. Our analytical approach integrates pion and kaon decay mechanisms, considering cooling effects such as synchrotron and hadronic cooling. For choked GRBs, the neutrino flux is shown to be dominated by kaon decay due to its heavier mass and shorter decay time compared to pions. We found that p-p mechanism produces lower neutrino fluxes compared to the Ice-Cube detected diffuse neutrino flux. Our model parameters are based on the simulation results on chocked GRBs. Fine-tuning of model parameters or distinct scenarios for hidden jets can explain the measured neutrino flux. In the case of LL GRBs, our calculations indicate that their contribution to the diffuse neutrino background is significant at high energies. Notably, LL GRB results are highly sensitive to variations in GRB parameters, which can significantly impact the neutrino flux. As neutrino detectors like Ice-Cube, ANTARES, KM3NeT gather more data, the potential to refine theoretical models and constraints on neutrino production mechanisms within astrophysical sources becomes increasingly promising. The upcoming IceCube-Gen2 observatory would be useful to identify individual neutrino sources. |
