Lepto-Hadronic Scenarios for TeV Extensions of Gamma-Ray Burst Afterglow Spectra
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
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2024
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| author | Klinger, Marc Yuan, Chengchao Taylor, Andrew M. Winter, Walter |
| author_facet | Klinger, Marc Yuan, Chengchao Taylor, Andrew M. Winter, Walter |
| contents | Recent multi-wavelength observations of gamma-ray burst afterglows observed in the TeV energy range challenge the simplest Synchrotron Self-Compton (SSC) interpretation of this emission and are consistent with a single power-law component spanning over eight orders of magnitude in energy. To interpret this generic behaviour in the single-zone approximation without adding further free parameters, we perform an exhaustive parameter space study using the public, time-dependent, multi-messenger transport software AM3. This description accounts for the radiation from non-thermal protons and the lepto-hadronic cascade induced by pp- and pγ-interactions. We summarise the main scenarios which we have found (SSC, Extended-syn, Proton-syn, pp-cascade, and pγ-cascade), and discuss their advantages and limitations. We find that possible high-density environments, as may be typical for surrounding molecular cloud material, offer an alternative explanation for producing flat hard (source) spectra up to and beyond energies of 10 TeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_13902 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Lepto-Hadronic Scenarios for TeV Extensions of Gamma-Ray Burst Afterglow Spectra Klinger, Marc Yuan, Chengchao Taylor, Andrew M. Winter, Walter High Energy Astrophysical Phenomena Recent multi-wavelength observations of gamma-ray burst afterglows observed in the TeV energy range challenge the simplest Synchrotron Self-Compton (SSC) interpretation of this emission and are consistent with a single power-law component spanning over eight orders of magnitude in energy. To interpret this generic behaviour in the single-zone approximation without adding further free parameters, we perform an exhaustive parameter space study using the public, time-dependent, multi-messenger transport software AM3. This description accounts for the radiation from non-thermal protons and the lepto-hadronic cascade induced by pp- and pγ-interactions. We summarise the main scenarios which we have found (SSC, Extended-syn, Proton-syn, pp-cascade, and pγ-cascade), and discuss their advantages and limitations. We find that possible high-density environments, as may be typical for surrounding molecular cloud material, offer an alternative explanation for producing flat hard (source) spectra up to and beyond energies of 10 TeV. |
| title | Lepto-Hadronic Scenarios for TeV Extensions of Gamma-Ray Burst Afterglow Spectra |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2403.13902 |