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Powerful quasars with young jets in multi‐epoch radio surveys

Nyland, Kristina and Dong, Dillon Z. and Patil, Pallavi and Lacy, Mark and Velzen, Sjoert and Kimball, Amy E. and Sarbadhicary, Sumit K. and Hallinan, Gregg and Baldassare, Vivienne and Clarke, Tracy E. and Goulding, Andy D. and Greene, Jenny and Hughes, Andrew and Kassim, Namir and Kunert-Bajraszewska, Magdalena and Maccarone, Thomas J. and Mooley, Kunal and Mukherjee, Dipanjan and Peters, Wendy and Petrov, Leonid and Polisensky, Emil and Rujopakarn, Wiphu and Whittle, Mark and Vaccari, Mattia (2021) Powerful quasars with young jets in multi‐epoch radio surveys. Astronomische Nachrichten, 342 (9-10). pp. 1146-1150. ISSN 0004-6337. doi:10.1002/asna.20210058.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription
Nyland, Kristina0000-0003-1991-370X
Dong, Dillon Z.0000-0001-9584-2531
Patil, Pallavi0000-0002-9471-8499
Lacy, Mark0000-0002-3032-1783
Kimball, Amy E.0000-0001-9324-6787
Sarbadhicary, Sumit K.0000-0002-4781-7291
Hallinan, Gregg0000-0002-7083-4049
Baldassare, Vivienne0000-0003-4703-7276
Clarke, Tracy E.0000-0001-6812-7938
Goulding, Andy D.0000-0003-4700-663X
Greene, Jenny0000-0002-5612-3427
Kassim, Namir0000-0001-8035-4906
Kunert-Bajraszewska, Magdalena0000-0002-6741-9856
Maccarone, Thomas J.0000-0003-0976-4755
Mooley, Kunal0000-0002-2557-5180
Mukherjee, Dipanjan0000-0003-0632-1000
Peters, Wendy0000-0002-5187-7107
Petrov, Leonid0000-0001-9737-9667
Polisensky, Emil0000-0003-3272-9237
Rujopakarn, Wiphu0000-0002-0303-499X
Vaccari, Mattia0000-0002-6748-0577
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.
Group:Astronomy Department
Funding AgencyGrant Number
Naval Research Laboratory6.1 Base Funding
Subject Keywords:galaxies: active – galaxies: evolution – galaxies: jets – radio continuum: galaxies – quasars: general
Issue or Number:9-10
Record Number:CaltechAUTHORS:20211130-205453962
Persistent URL:
Official Citation:Powerful quasars with young jets in multi-epoch radio surveys. Nyland, K., Dong, D. Z., Patil, P., et al. 2021, Astron. Nachr., 342, 1146.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112094
Deposited By: Tony Diaz
Deposited On:30 Nov 2021 21:15
Last Modified:12 Jan 2022 18:41

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