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005     20250723105632.0
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100 1 _ |a Yuan, Chengchao
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245 _ _ |a Revisiting X-ray Afterglows of Jetted Tidal Disruption Events with the External Reverse Shock
260 _ _ |a London
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500 _ _ |a 10 pages, 3 figures, 1 table. Comments are welcome
520 _ _ |a 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 $\gamma$-ray and neutrino detection.
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700 1 _ |a Winter, Walter
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700 1 _ |a Zhang, B. Theodore
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700 1 _ |a Murase, Kohta
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773 _ _ |a 10.3847/1538-4357/adbbde
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787 0 _ |a Yuan, Chengchao et.al.
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|t Revisiting X-Ray Afterglows of Jetted Tidal Disruption Events with the External Reverse Shock
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