Affordable Access

A study of young radio-loud AGN using space-VLBI

Authors
  • Snellen, Ignas
  • Tschager, Wolfgang
  • Schilizzi, Richard
  • Rottgering, Huub
  • Miley, George
Type
Preprint
Publication Date
Feb 21, 2000
Submission Date
Feb 21, 2000
Identifiers
arXiv ID: astro-ph/0002393
Source
arXiv
License
Unknown
External links

Abstract

Gigahertz Peaked Spectrum (GPS) sources form a key element in the study of the onset and evolution of radio-loud AGN, since they are most likely the young counterparts of extended radio sources. Here we discuss space-VLBI observations of GPS sources, which enable us to obtain unprecedented angular resolution at frequencies near their spectral turnovers. Observed peak brightness temperatures of Log[T]=10.5-11 Kelvin indicate that synchrotron self absorption is responsible for their spectral turnovers. This is in close agreement with previous size - spectral turnover statistics for GPS sources. The combination of these new space-VLBI observations with ground-based VLBI observations taken at an earlier epoch, confirm the young ages for the most compact GPS galaxies of several hundred years.

Report this publication

Statistics

Seen <100 times