Revisiting X-ray Afterglows of Jetted Tidal Disruption Events with the External Reverse Shock
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915359755337728 |
|---|---|
| author | Yuan, Chengchao Winter, Walter Zhang, B. Theodore Murase, Kohta Zhang, Bing |
| author_facet | Yuan, Chengchao Winter, Walter Zhang, B. Theodore Murase, Kohta Zhang, Bing |
| contents | We investigate the external reverse shock region of relativistic jets as the origin of X-ray afterglows of jetted tidal disruption events (TDEs) that exhibit luminous jets accompanied by fast-declining non-thermal X-ray emissions. We model the dynamics of jet propagating within an external density medium, accounting for continuous energy injection driven by accretion activities. We compute the time-dependent synchrotron and inverse Compton emissions from the reverse shock region. Our analysis demonstrates that the reverse shock scenario can potentially explain the X-ray light curves and spectra of four jetted TDEs, AT 2022cmc, Swift J1644, Swift J2058, and Swift J1112. Notably, the rapid steepening of the late-stage X-ray light curves can be attributed jointly to the jet break and cessation of the central engine as the accretion rate drops below the Eddington limit. Using parameters obtained from X-ray data fitting, we also discuss the prospects for $γ$-ray and neutrino detection. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_07925 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Revisiting X-ray Afterglows of Jetted Tidal Disruption Events with the External Reverse Shock Yuan, Chengchao Winter, Walter Zhang, B. Theodore Murase, Kohta Zhang, Bing High Energy Astrophysical Phenomena We investigate the external reverse shock region of relativistic jets as the origin of X-ray afterglows of jetted tidal disruption events (TDEs) that exhibit luminous jets accompanied by fast-declining non-thermal X-ray emissions. We model the dynamics of jet propagating within an external density medium, accounting for continuous energy injection driven by accretion activities. We compute the time-dependent synchrotron and inverse Compton emissions from the reverse shock region. Our analysis demonstrates that the reverse shock scenario can potentially explain the X-ray light curves and spectra of four jetted TDEs, AT 2022cmc, Swift J1644, Swift J2058, and Swift J1112. Notably, the rapid steepening of the late-stage X-ray light curves can be attributed jointly to the jet break and cessation of the central engine as the accretion rate drops below the Eddington limit. Using parameters obtained from X-ray data fitting, we also discuss the prospects for $γ$-ray and neutrino detection. |
| title | Revisiting X-ray Afterglows of Jetted Tidal Disruption Events with the External Reverse Shock |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2411.07925 |