2016MNRAS.458.2350W -
Mon. Not. R. Astron. Soc., 458, 2350-2359 (2016/May-3)
First hard X-ray observations of the blazar S5 0716+714 with NuSTAR during a multiwavelength campaign.
WIERZCHOLSKA A. and SIEJKOWSKI H.
Abstract (from CDS):
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.
Abstract Copyright:
© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
Journal keyword(s):
radiation mechanisms: non-thermal - galaxies: active - BL Lacertae objects: general
Status at CDS
:
Large table(s) will be appraised for possible ingestion in VizieR.
Simbad objects:
1
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