X-RAY AFTERGLOW of SWIFT J1644+57: A Compton ECHO?

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/101824

Title:	X-RAY AFTERGLOW of SWIFT J1644+57: A Compton ECHO?
Authors:	高仲明;Cheng, K. S.;Chernyshov, D. O.;Dogiel, V. A.;Kong, Albert K. H.;Ko, C. M.
Contributors:	理學院天文研究所
Keywords:	AFTERGLOW;Afterglows;ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;CAPTURE;CLOUDS;Constants;COSMOLOGY;DISTANCE;Elastic scattering;MILKY WAY;Molecular clouds;PLASMA;radiation mechanisms: non-thermal;THOMSON SCATTERING;X RADIATION;X-rays;X-rays: bursts;XMM (spacecraft)
Date:	2016-01-01
Issue Date:	2026-04-21 14:46:49 (UTC+8)
Publisher:	IOP Publishing Ltd.;United States: The American Astronomical Society
Abstract:	摘要： ABSTRACT Swift, Chandra, and XMM have found a weak but nearly constant X-ray component from Swift J1644+57 that appeared at ∼500 days and was visible at least until ∼1400 days after the stellar capture, which cannot be explained by standard tidal disruption theories. We suggest that this X-ray afterglow component may result from the Thomson scattering between the primary X-rays and its surrounding plasma, i.e., a Compton echo effect. Similar phenomena have also been observed from molecular clouds in our Galactic Center, which were caused by the past activity of Srg A*. If this interpretation of Swift J1644+57 afterglow is correct, this is the first Compton Echo effect observed in the cosmological distances. 其他題名： APJL 其他題名： Astrophys. J. Lett 出版者： United States: The American Astronomical Society 出版日期： 2016-01-01 出處： Astrophysical journal. Letters, 2016-01, Vol.816 (1), p.L10--5 資源來源： Institute of Physics Journals 版權： 2016. The American Astronomical Society. All rights reserved. 識別號： ISSN: 2041-8205 識別號： EISSN: 2041-8213 識別號： DOI: 10.3847/2041-8205/816/1/L10
Appears in Collections:	[Graduate Institute of Astronomy] journal & Dissertation

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