CaltechAUTHORS
Published January 15, 2020 | Version public
Journal Article Metadata-only

Interstellar Scintillation, ISS, and Intrinsic Variability of Radio AGN

Creators

  • 1. ROR icon Australian National University
  • 2. ROR icon Institute of Astronomy and Astrophysics, Academia Sinica
  • 3. ROR icon Astronomy and Space
  • 4. ROR icon International Centre for Radio Astronomy Research
  • 5. ROR icon Centre of Excellence for All-Sky Astrophysics
  • 6. ROR icon Nordic Optical Telescope
  • 7. ROR icon University of Turku
  • 8. ROR icon Aalto University
  • 9. ROR icon California Institute of Technology
  • 10. ROR icon University of California, San Diego
  • 11. ROR icon University of Chile
  • 12. ROR icon Netherlands Institute for Radio Astronomy
  • 13. ROR icon University of Tasmania
  • 14. ROR icon Goddard Space Flight Center
  • 15. ROR icon University of Maryland, Baltimore
  • 16. ROR icon Catholic University of America
  • 17. ROR icon University of Southern Queensland

Abstract

We investigate the relationship between the 5 GHz interstellar scintillation (ISS) and the 15 GHz intrinsic variability of the compact, radio-selected active galactic nuclei (AGN) common to the Microarcsecond Scintillation-Induced Variability (MASIV) Survey and the Owens Valley Radio Observatory blazar flux density monitoring program. As part of this investigation, we also re-examine the reported intrinsic nature of the February 1990 VLA observations of the blazar S5 0716+714. We are also examining the presence of IDV/ISS in the Owens Valley 15 GHz flux density monitoring data. We find a significant relationship between the Owens Valley 15 GHz modulation index and the MASIV modulation index. We also discuss the implications of these findings for RadioAstron.

Additional Information

© 2019 Published by Elsevier Ltd on behalf of COSPAR. Received 4 February 2019, Revised 29 April 2019, Accepted 1 May 2019, Available online 13 May 2019.

Additional details

Identifiers

Eprint ID
95508
Resolver ID
CaltechAUTHORS:20190515-102837886

Dates

Created
2019-05-15
Created from EPrint's datestamp field
Updated
2021-11-16
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Astronomy Department