2020MNRAS.496.1706S

Query : 2020MNRAS.496.1706S

2020MNRAS.496.1706S - Mon. Not. R. Astron. Soc., 496, 1706-1717 (2020/August-1)

The duty cycle of radio galaxies revealed by LOFAR: remnant and restarted radio source populations in the Lockman Hole.

SHABALA S.S., JURLIN N., MORGANTI R., BRIENZA M., HARDCASTLE M.J., GODFREY L.E.H., KRAUSE M.G.H. and TURNER R.J.

Abstract (from CDS):

Feedback from radio jets associated with active galactic nuclei (AGNs) plays a profound role in the evolution of galaxies. Kinetic power of these radio jets appears to show temporal variation, but the mechanism(s) responsible for this process are not yet clear. Recently, the LOw Frequency ARray (LOFAR) has uncovered large populations of active, remnant, and restarted radio jet populations. By focusing on LOFAR data in the Lockman Hole, in this work we use the Radio AGNs in Semi-Analytic Environments (RAiSE) dynamical model to present the first self-consistent modelling analysis of active, remnant, and restarted radio source populations. Consistent with other recent work, our models predict that remnant radio lobes fade quickly. Any high (>10 per cent) observed fraction of remnant and restarted sources therefore requires a dominant population of short-lived jets. We speculate that this could plausibly be provided by feedback-regulated accretion.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: active - galaxies: jets - radio continuum: galaxies

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 910 0

Query : 2020MNRAS.496.1706S

Basic data :
NAME Lockman Hole -- Region defined in the Sky
Other object types: otypes_help 		reg ([SFD98])
ICRS coord. (ep=J2000) : 		10 45 00.0 +58 00 00 [ ] E 2011ApJ...734...99H
FK4 coord. (ep=B1950 eq=1950) : 		10 41 51.0 +58 15 47 [ ]
Gal coord. (ep=J2000) : 		149.7686 +52.0314 [ ]
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Hierarchy : number of linked objects
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Identifiers (4) :
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NAME Lockman Hole NAME the Hole NAME the LJM Hole [SFD98] J1048+5702

References (910 between 1850 and 2026) (Total 910)
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