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Perplexing correlations between Gamma-ray emission and parsec-scale jet orientation variations in the BL Lac object S5 0716+714

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 نشر من قبل Bindu Rani Dr.
 تاريخ النشر 2015
  مجال البحث فيزياء
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 تأليف B. Rani




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The analysis of $gamma$-ray flux variability along with the parsec-scale jet kinematics suggests that the high-energy radiation in the BL Lac object S5 0716+714 has a significant correlation with the mm-VLBI core flux density and with the local orientation of the inner jet flow. For the first time in any blazar, we report a significant correlation between the $gamma$-ray flux variations and the variations in the local orientation of the jet outflow (position angle). We find that the $gamma$-ray flux variations lead the 7~mm VLBI core flux variations by 82$pm$32~days, which suggests that the high-energy emission in S5 0716+714 is coming from a region located 3.8$pm$1.9~parsecs closer to the central black hole than the core seen on the mm-VLBI images. The results imply a strong physical and casual connection between $gamma$-ray emission and the inner jet morphology in the source.



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