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X-Ray and Radio Emission from Type IIn Supernova SN 2010jl

Chandra, Poonam and Chevalier, Roger A. and Chugai, Nikolai and Fransson, Claes and Soderberg, Alicia M. (2015) X-Ray and Radio Emission from Type IIn Supernova SN 2010jl. Astrophysical Journal, 810 (1). Art. No. 32. ISSN 0004-637X. doi:10.1088/0004-637X/810/1/32.

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We present all X-ray and radio observations of the Type IIn supernova SN 2010jl. The X-ray observations cover a period up to day 1500 with Chandra, XMM-Newton, NuSTAR, and Swift-X-ray Telescope (XRT). The Chandra observations after 2012 June, the XMM-Newton observation in 2013 November, and most of the Swift-XRT observations until 2014 December are presented for the first time. All the spectra can be fitted by an absorbed hot thermal model except for Chandra spectra on 2011 October and 2012 June when an additional component is needed. Although the origin of this component is uncertain, it is spatially coincident with the supernova and occurs when there are changes to the supernova spectrum in the energy range close to that of the extra component, indicating that the emission is related to the supernova. The X-ray light curve shows an initial plateau followed by a steep drop starting at day ˜300. We attribute the drop to a decrease in the circumstellar density. The column density to the X-ray emission drops rapidly with time, showing that the absorption is in the vicinity of the supernova. We also present Very Large Array radio observations of SN 2010jl. Radio emission was detected from SN 2010jl from day 570 onwards. The radio light curves and spectra suggest that the radio luminosity was close to its maximum at the first detection. The velocity of the shocked ejecta derived assuming synchrotron self-absorption is much less than that estimated from the optical and X-ray observations, suggesting that free-free absorption dominates.

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Fransson, Claes0000-0001-8532-3594
Additional Information:© 2015. The American Astronomical Society. Received 2014 December 10; accepted 2015 July 20; published 2015 August 26. P.C. thanks Jayaram Chengalur, Nissim Kanekar, and Gulabchand Dewangan for useful discussions. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. Support for this work was provided by the National Aeronautics and Space Administration through Chandra Awards GO0-211080X, GO2-13082X, and GO4-15065X issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics and Space Administration under contract NAS8-03060. The research by C.F. is supported by the Swedish Research Council and Swedish National Space Board. This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. Facilities: EVLA - Expanded Very Large Array, XMM-CXO - Newton X-Ray Multimirror Mission satellite, Swift - Swift Gamma-Ray Burst Mission, NuSTAR - The NuSTAR (Nuclear Spectroscopic Telescope Array) mission.
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Subject Keywords:circumstellar matter; radiation mechanisms: non-thermal; radio continuum: general; stars: mass-loss; supernovae: individual (SN 2010jl) ; X-rays: general
Issue or Number:1
Record Number:CaltechAUTHORS:20160131-141702244
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Official Citation:Poonam Chandra et al 2015 ApJ 810 32
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64107
Deposited By: Joy Painter
Deposited On:03 Feb 2016 00:56
Last Modified:10 Nov 2021 23:26

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