Jet outflow and gamma-ray emission correlations in S5 0716+714

Abstract

Using millimeter-very long baseline interferometry (VLBI) observations of the BL Lac object S5 0716+714 from August 2008 to September 2013, we investigate variations in the core flux density and orientation of the sub-parsec scale jet i.e. position angle. The gamma-ray data obtained by the Fermi-LAT (Large Area Telescope) are used to investigate the high-energy flux variations over the same time period. For the first time in any blazar, we report a significant correlation between the gamma-ray flux variations and the position angle (PA) variations in the VLBI jet. The cross-correlation analysis also indicates a positive correlation such that the mm-VLBI core flux density variations are delayed with respect to the gamma-ray flux by 82$\pm$32 days. This suggests that the high-energy emission is coming from a region located $\ge$(3.8$\pm$1.9) parsecs upstream of the mm-VLBI core (closer to the central black hole). These results imply that the observed inner jet morphology has a strong connection with the observed gamma-ray flares.

arXiv comment5 pages, 6 figures, accepted for publication in A&A Letters

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• Multi-wavelength characterization of the blazar S5~0716+714 during an unprecedented outburst phase
• The connection between the radio jet and the gamma-ray emission in the radio galaxy 3C 120
• Connection between inner jet kinematics and broadband flux variability in the BL Lac object S5 0716+714
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• Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare
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• Exploring the connection between parsec-scale jet activity and broadband outbursts in 3C 279
• Multi-frequency variability study of Ton 599 during high activity of 2017
• Multicolor Optical Monitoring of the Blazar S5 0716+714 from 2017 to 2019
• Locating the gamma-ray emission site in Fermi/LAT blazars. II Multifrequency correlations
• Radio$-\gamma -$ray response in blazars as a signature of adiabatic blob expansion
• A multiband study and exploration of the radio wave - $\gamma$-ray connection in 3C 84
• Multi-wavelength observations of the gamma-ray flaring quasar S4 1030+61 in 2009-2014
• Probing the gamma-ray variability in 3C279 using broadband observations
• The estimation of $\gamma$-ray Doppler factor for Fermi/LAT-detected blazars
• Enabling Transformational ngEHT Science via the Inclusion of 86 GHz Capabilities
• Multi-color optical monitoring of the BL Lacertae object S5 0716+714 during the 2012 outburst
• Radio and optical intra-day variability observations of five blazars
• A geometrical interpretation for the properties of multiband optical variability of the blazar S5 0716+714
• A 31.3 day Transient Quasiperiodic Oscillation in Gamma-ray Emission from Blazar S5 0716+714
• Localizing the $\gamma$-ray emitting region in the blazar TXS 2013+370
• Interferometric Monitoring of Gamma-ray Bright AGNs: S5 0716+714
• Diversity of gamma-ray and Radio Variabilities of Bright Blazars and Implications for gamma-ray Emission Location
• The jet of S5 0716+71 at $\mu$as scales with RadioAstron
• Long-term multiband optical variability of S5 0716+714 blazar
• Location and origin of gamma-rays in blazars
• Hard X-ray emission in Centaurus A
• Resolving the inner jet of PKS 1749+096 with super-resolution VLBA images at 7 mm
• Jet Archaeology and Forecasting: Image Variability and Magnetic Field Configuration