Relation between Events in the Millimeter-wave Core and Gamma-ray Outbursts in Blazar Jets
arXiv:1204.6707
Abstract
Analysis of comprehensive monitoring of 34 gamma-ray bright quasars, BL Lac objects, and radio galaxies reveals a close connection between events in the millimeter-wave emission imaged with the VLBA at 43 GHz and flares at gamma-ray and lower frequencies. Roughly 2/3 of the flares are coincident with the appearance of a new superluminal knot and/or a flare in the millimeter-wave "core'" located parsecs from the central engine. This presents a theoretical challenge to explain how the gamma-ray flux can often be variable on intra-day time-scales. Possible answers to this include very narrow opening angles of the jet, small volume filling factors of the highest energy electrons, chaotic magnetic fields, and turbulent velocity fields relative to the mean jet flow.
arXiv comment2012 Fermi & Jansky Proceedings - eConf C1111101
Cited by in corpus (19)
- Turbulent, Extreme Multi-Zone Model for Simulating Flux and Polarization Variability in Blazars
- Constraining the Location of Gamma-Ray Flares in Luminous Blazars
- MAGIC gamma-ray and multifrequency observations of flat spectrum radio quasar PKS 1510-089 in early 2012
- The brightest gamma-ray flares of blazars
- Active galactic nuclei at gamma-ray energies
- Gamma-ray flaring activity from the gravitationally lensed blazar PKS 1830-211 observed by Fermi LAT
- Multifrequency studies of the narrow-line Seyfert 1 galaxy SBS 0846+513
- Radio-to-gamma-ray Monitoring of the Narrow-Line Seyfert 1 Galaxy PMN J0948+0022 from 2008 to 2011
- Multifrequency Studies of the Peculiar Quasar 4C +21.35 During the 2010 Flaring Activity
- Fourier Analysis of Blazar Variability: Klein-Nishina Effects and the Jet Scattering Environment
- Gravitational Lenses as High-Resolution Telescopes
- 3C273 variability at 7 mm: Evidences of shocks and precession in the jet
- Exploring the Nature of the 2016 γ-ray Emission in the Blazar 1749+096
- Multiband Observations of the Quasar PKS 2326-502 during Active and Quiescent Gamma-Ray States in 2010-2012
- Galaxies as High-Resolution Telescopes
- Blazars in Context in the Fermi Era
- The blazar paradigm and its discontents
- Modeling Fermi Large Area Telescope and Multiwavelength Data from Blazars
- Turbulent Extreme Multi-Zone Model for Multi-Waveband Variations of Blazars