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First hard X-ray observations of the blazar S5 0716+714 with NuSTAR during a multiwavelength campaign

Wierzcholska, A. and Siejkowski, H. (2016) First hard X-ray observations of the blazar S5 0716+714 with NuSTAR during a multiwavelength campaign. Monthly Notices of the Royal Astronomical Society, 458 (3). pp. 2350-2359. ISSN 0035-8711. http://resolver.caltech.edu/CaltechAUTHORS:20160419-142247557

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Abstract

We report the results of a multifrequency campaign targeting S5 0716+714 in the flaring state of the source observed in 2015 January and February. The observations have been performed using the following instruments: Fermi/Large Area Telescope (LAT), Nuclear Spectroscopic Telescope Array, X-ray Telescope and Ultraviolet/Optical Telescope. The elevated flux level was visible in all frequencies and the outburst consists of five sub-flares. In this paper, we focus on the analysis of the X-ray observations both in the soft and hard regimes for data collected with NuSTAR and Swift/XRT. This is the first time, when hard X-ray observations of the source collected with NuSTAR are reported. The studies reveal both low- and high-energy components clearly visible in the energy band, with the break energy of 8 keV, which is the highest break energy ever reported for S5 0716+714. The second part of this work is concentrated on multifrequency observations collected during the flaring activity period. The variability patterns recorded during the period are characterized using a fractional variability amplitude and description of the flare profiles. The correlation studies reveal strong and significant relation between the optical, ultraviolet and γ-ray observations, and no time lag is found for any of the studied relations.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1093/mnras/stw425DOIArticle
http://mnras.oxfordjournals.org/content/458/3/2350PublisherArticle
Additional Information:© 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2016 February 21. Received 2016 February 21. In original form 2015 September 8. First published online February 24, 2016. The authors thank anonymous referee for suggestions and remarks provided. This research was supported in part by PLGrid Infrastructure. The plots presented in this paper are rendered using MATPLOTLIB (Hunter 2007).
Group:NuSTAR
Record Number:CaltechAUTHORS:20160419-142247557
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160419-142247557
Official Citation:A. Wierzcholska and H. Siejkowski First hard X-ray observations of the blazar S5 0716+714 with NuSTAR during a multiwavelength campaign MNRAS (May 21, 2016) Vol. 458 2350-2359 doi:10.1093/mnras/stw425 first published online February 24, 2016
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66284
Collection:CaltechAUTHORS
Deposited By: Joy Painter
Deposited On:19 Apr 2016 23:18
Last Modified:19 Apr 2016 23:18

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