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Multi-wavelength flares and magnetic field in blazars: a case study of IBL S5 0716+714

Published online by Cambridge University Press:  23 June 2017

S. Chandra ,
K. P. Singh  and
K. S. Baliyan
S. Chandra
Affiliation:
Tata Institute of Fundamental Research, Mumbai-400005, India email: sunil.chandra@tifr.res.in
K. P. Singh
Affiliation:
Tata Institute of Fundamental Research, Mumbai-400005, India email: sunil.chandra@tifr.res.in
K. S. Baliyan
Affiliation:
Physical Research Laboratory, Ahmedabad, Gujarat - 380009
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Abstract

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We present a study performed to understand the role of magnetic field during a historical outburst of IBL S5 0716+714 witnessed in early 2015. The two month long profile of the outburst reveals several episodes of sub-flares superimposed over the diminishing trend of the peak-flux. The broadband X-ray spectrum from Swift + Nustar exhibits a break at 4.9+0.4−0.5 keV which is consistent with the valley in the SED predicted by model. The spectral index variations, closely correlated to the flux variations during the first prominent sub-flare, indicate the alterations in the particle energy distribution coinciding the onset of the flare. The PA rotations approximately at the same epoch are used to constrain the field and its geometry.

Keywords

AGNBlazarBlazar-jet-magnetic fieldsetc.
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S324: New Frontiers in Black Hole Astrophysics , September 2016 , pp. 203 - 206
Copyright
Copyright © International Astronomical Union 2017 

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