Preprint

PUBDB-2025-01264

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Revisiting X-Ray Afterglows of Jetted Tidal Disruption Events with the External Reverse Shock

Yuan, C. (Corresponding author)DESY* ; Winter, W.DESY* ; Zhang, B. T. ; Murase, K. ; Zhang, B.

2025

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Please use a persistent id in citations: doi:10.3204/PUBDB-2025-01264

Report No.: arXiv:2411.07925

Abstract: We investigate the external reverse shock (RS) 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 nonthermal 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 RS region. Our analysis demonstrates that the RS scenario can potentially explain the X-ray light curves and spectra of four jetted TDEs, namely, 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.

Note: ApJ 982 196 (2025). 11 pages, 3 figures, 1 table. Accepted for publication in ApJ

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Contributing Institute(s):

1. Theoretische Astroteilchenphysik (Z_THAT)

Research Program(s):

1. 613 - Matter and Radiation from the Universe (POF4-613) (POF4-613)

Experiment(s):

1. No specific instrument

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Database coverage:
; ; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Yuan, C. (Corresponding author)DESY* ; Winter, W.DESY* ; Zhang, B. T. ; Murase, K. ; Zhang, B.
Revisiting X-ray Afterglows of Jetted Tidal Disruption Events with the External Reverse Shock
The astrophysical journal / Part 1 982(2), 196 (2025) [10.3847/1538-4357/adbbde]2025     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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