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T. Wevers

As seen in: Nature, The Astronomical Journal
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Articles by T. Wevers

Quasi-periodic X-ray eruptions years after a nearby tidal disruption event - Nature

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By M. Nicholl, D. R. Pasham, M. Guolo, K. Gendreau, G. C. Dewangan, E. C. Ferrara, V. S. Dhillon, A. Janiuk, K. D. Alexander, Y. Cendes, K. C. Chambers, R. Chornock, H. Gao, S. Gómez, B. P. Gompertz, A. C. Fabian, A. Ingram, E. Kara, T. Laskar, C.-C. Lin, S. McGee, T. E. Moore, S. Smartt, K. W. Smith, R. J. Wainscoat, T. Wevers
| Nature Verified
Abstract Quasi-periodic eruptions (QPEs) are luminous bursts of soft X-rays from the nuclei of galaxies, repeating on timescales of hours to weeks1,2,3,4,5. The mechanism behind these rare systems is uncertain, but most theories involve accretion disks around supermassive black holes (SMBHs) undergoing instabilities6,7,8 or interacting with a stellar object in a close orbit9,10,11.
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Live to Die Another Day: The Rebrightening of AT 2018fyk as a Repeating Partial Tidal Disruption Event

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By T. Wevers, E. R. Coughlin, D. R. Pasham, Space Research
| The Astronomical Journal Verified
The classic prediction for the mass fallback rate generated by a star being tidally disrupted by a supermassive black hole (SMBH) is an asymptotic, t−5/3 decay (Rees 1988; Phinney 1989). While some of the tidal disruption events (TDEs) identified so far have displayed such long-term behavior, a significant fraction show different light curve evolution, which in some cases is completely decoupled from the mass fallback rate (e.g., Gezari et al. 2017; Kajava et al.
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