Constraints on the Gamma-Ray Emitting Region in Blazars from Multi-Frequency VLBI Measurements
Abstract
Single-zone synchrotron self-Compton and external Compton models are widely used to explain broadband Spectral Energy Distributions (SEDs) of blazars from infrared to gamma-rays. These models bear obvious similarities to the homogeneous synchrotron cloud model which is often applied to explain radio emission from individual components of parsec-scale radio jets. The parsec-scale core, typically the brightest and most compact feature of blazar radio jet, could be the source of high-energy emission. We report on ongoing work to test this hypothesis by deriving the physical properties of parsec-scale radio emitting regions of twenty bright Fermi blazars using dedicated 5-43 GHz VLBA observations and comparing these parameters to results of SED modeling.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 23, 2010
- Accession Number
- ADA523212
Entities
People
- A. B. Pushkarev
- A. Carraminana
- A. P. Lobanov
- F. K. Schinzel
- J. D. Finke
- K. V. Sokolovsky
- L. Carrasco
- M. A. Gurwell
- M. Kadler
- T. Savolainen
- V. H. Chavushyan
- Y. Y. Kovalev