CaltechAUTHORS
Published November 2021 | Version public
Journal Article Metadata-only

Powerful quasars with young jets in multi‐epoch radio surveys

Creators

  • 1. ROR icon National Academies of Sciences, Engineering, and Medicine
  • 2. ROR icon California Institute of Technology
  • 3. ROR icon National Radio Astronomy Observatory
  • 4. ROR icon Leiden University
  • 5. ROR icon Michigan State University
  • 6. ROR icon Washington State University
  • 7. ROR icon United States Naval Research Laboratory
  • 8. ROR icon Princeton University
  • 9. ROR icon University of Alberta
  • 10. ROR icon Nicolaus Copernicus University
  • 11. ROR icon Texas Tech University
  • 12. ROR icon Inter-University Centre for Astronomy and Astrophysics
  • 13. ROR icon Goddard Space Flight Center
  • 14. ROR icon National Astronomical Research Institute of Thailand
  • 15. ROR icon University of Virginia
  • 16. ROR icon University of the Western Cape

Abstract

Energetic feedback driven by the large-scale (100's of kpc) lobes of classical radio galaxies is known to play an important role in shaping galaxy evolution. However, the prevalence of young and compact jets – and their impact on the interstellar medium – remains an open question. Multi-epoch radio surveys with cadences of years to decades offer a promising means of identifying even faint (mJy-level) jets that are compact and potentially young on the basis of variability. Recently, a comparison of images from the Very Large Array Sky Survey (VLASS) and the Faint Images of the Radio Sky at Twenty Centimeters (FIRST) survey has revealed a population of distant (0.2 < z < 3.2) quasars that have brightened dramatically in the past 1–2 decades. These quasars appear to have transitioned from "radio-quiet" nondetections in FIRST to "radio-loud" detections in VLASS. Extensive multiband follow-up observations with the VLA from 1 to 18 GHz have revealed compact (sub-kpc) radio sources that are consistent with young jets that were recently triggered. Here, we summarize the status of our on-going study of quasars with newborn jets identified in the radio time domain.

Additional Information

© 2021 Wiley-VCH GmbH. Issue Online: 28 December 2021; Version of Record online: 25 November 2021; Manuscript accepted: 21 October 2021; Manuscript received: 20 October 2021. Funding information: 6.1 Base.

Additional details

Identifiers

Eprint ID
112094
Resolver ID
CaltechAUTHORS:20211130-205453962

Funding

Naval Research Laboratory
6.1 Base Funding

Dates

Created
2021-11-30
Created from EPrint's datestamp field
Updated
2022-01-12
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Astronomy Department