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Reverberation in Tidal Disruption Events: Dust Echoes, Coronal Emission Lines, Multi-wavelength Cross-correlations, and QPOs

van Velzen, Sjoert and Pasham, Dheeraj R. and Komossa, Stefanie and Yan, Lin and Kara, Erin A. (2021) Reverberation in Tidal Disruption Events: Dust Echoes, Coronal Emission Lines, Multi-wavelength Cross-correlations, and QPOs. Space Science Reviews, 217 (5). Art. No. 63. ISSN 0038-6308. doi:10.1007/s11214-021-00835-6. https://resolver.caltech.edu/CaltechAUTHORS:20210715-140929476

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Abstract

Stellar tidal disruption events (TDEs) are typically discovered by transient emission due to accretion or shocks of the stellar debris. Yet this luminous flare can be reprocessed by gas or dust that inhabits a galactic nucleus, resulting in multiple reverberation signals. Nuclear dust heated by the TDE will lead to an echo at infrared wavelengths (1-10 μm) and transient coronal lines in optical spectra of TDEs trace reverberation by gas that orbits the black hole. Both of these signal have been detected, here we review this rapidly developing field. We also review the results that have been extracted from TDEs with high-quality X-ray light curves: quasi periodic oscillations (QPOs), reverberation lags of fluorescence lines, and cross-correlations with emission at other wavelengths. The observational techniques that are covered in this review probe the emission from TDEs over a wide range of scales: from ∼1 light year to the innermost parts of the newly formed accretion disk. They provide insights into important properties of TDEs such as their bolometric output and the geometry of the accretion flow. While reverberation signals are not detected for every TDE, we anticipate they will become more commonplace when the next generation of X-ray and infrared instruments become operational.


Item Type:Article
Related URLs:
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https://doi.org/10.1007/s11214-021-00835-6DOIArticle
ORCID:
AuthorORCID
van Velzen, Sjoert0000-0002-3859-8074
Yan, Lin0000-0003-1710-9339
Additional Information:© The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. Received 13 June 2020; Accepted 02 June 2021; Published 01 July 2021. The Tidal Disruption of Stars by Massive Black Holes. Edited by Peter G. Jonker, Sterl Phinney, Elena Maria Rossi, Sjoert van Velzen, Iair Arcavi and Maurizio Falanga.
Issue or Number:5
DOI:10.1007/s11214-021-00835-6
Record Number:CaltechAUTHORS:20210715-140929476
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210715-140929476
Official Citation:van Velzen, S., Pasham, D.R., Komossa, S. et al. Reverberation in Tidal Disruption Events: Dust Echoes, Coronal Emission Lines, Multi-wavelength Cross-correlations, and QPOs. Space Sci Rev 217, 63 (2021). https://doi.org/10.1007/s11214-021-00835-6
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:109831
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Jul 2021 17:13
Last Modified:15 Jul 2021 17:13

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