Do high redshift quasars have powerful jets?

Abstract

Double-lobed radio galaxies a few 100s of kpc in extent, like Cygnus A, are common at redshifts of 1 to 2, arising from some 10 per cent of the most powerful Active Galactic Nuclei (AGN). At higher redshifts they are rare, with none larger than a few 10s of kpc known above redshift z~4. Recent studies of the redshift evolution of powerful-jetted objects indicate that they may constitute a larger fraction of the AGN population above redshift 2 than appears from a simple consideration of detected GHz radio sources. The radio band is misleading as the dramatic (1+z)^4 boost in the energy density of the Cosmic Microwave Background (CMB) causes inverse Compton scattering to dominate the energy losses of relativistic electrons in the extended lobes produced by jets, making them strong X-ray, rather than radio, sources. Here we investigate limits to X-ray lobes around two distant quasars, ULASJ112001.48+064124.3 at z = 7.1 and SDSSJ1030+0524 at z=6.3, and find that powerful jets could be operating yet be currently undetectable. Jets may be instrumental in the rapid build-up of billion Msun black hole at a rate that violates the Eddington limit.

4 pages, 3 figures. MNRAS in press

References in corpus (28)

• The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
• Observational Evidence of AGN Feedback
• A luminous quasar at a redshift of z = 7.085
• Non-Gravitational Heating in the Hierarchical Formation of X-ray Clusters
• The stellar mass structure of massive galaxies from z=0 to z=2.5; surface density profiles and half-mass radii
• The X-ray -- radio alignment in the z = 2.2 radio galaxy PKS 1138--262
• Sensitive observations at 1.4 and 250 GHz of z > 5 QSOs
• The role of relativistic jets in the heaviest and most active supermassive black holes at high redshift
• Extended X-ray emission around 4C 41.17 at z=3.8
• Discovery of the low-energy cutoff in a powerful giant radio galaxy
• Radio-loud AGNs at high redshifts and the cosmic microwave background
• Extended inverse-Compton emission from distant, powerful radio galaxies
• Rotation rates, sizes, and star formation efficiencies of a representative population of simulated disc galaxies
• On the X-ray emission of z~2 radio galaxies: IC scattering of the CMB & no evidence for fully-formed potential wells
• Was the Cosmic Web of Protogalactic Material Permeated by Lobes of Radio Galaxies During the Quasar Era?
• X-rays from the redshift 7.1 quasar ULAS J1120+0641
• Inverse-Compton ghosts and double-lobed radio sources in the X-ray sky
• The extended X-ray emission around HDF130 at z=1.99: an inverse Compton ghost of a giant radio source in the Chandra Deep Field North
• Extended X-ray emission at high redshifts: radio galaxies versus clusters
• A Chandra Search for X-Ray Jets in Redshift 6 Quasars
• The X-ray Spectrum of the z=6.30 QSO SDSS J1030+0524
• The X-ray and radio-emitting plasma lobes of 4C23.56: further evidence of recurrent jet activity and high acceleration energies
• High redshift Fermi blazars observed by GROND and Swift
• Inverse Compton X-rays from Giant Radio Galaxies at z~1
• Inverse Compton X-ray halos around high-z radio galaxies: A feedback mechanism powered by far-infrared starbursts or the CMB?
• Cosmological growth and feedback from supermassive black holes
• X-ray emission around the z=4.1 radio galaxy TNJ1338-1942 and the potential role of far-infrared photons in AGN Feedback
• The inverse-Compton ghost HDF 130 and the giant radio galaxy 6C 0905+3955: matching an analytic model for double radio source evolution

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• On the nature of bright compact radio sources at z>4.5
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• Blazars at the Cosmic Dawn
• The 500 ks Chandra observation of the z = 6.31 QSO SDSS J1030+0524
• Detection of Quasar Feedback from the Thermal Sunyaev-Zel'dovich Effect in Planck
• Enhanced X-ray Emission from the Most Radio-Powerful Quasar in the Universe's First Billion Years
• Direct observation of an extended X-ray jet at $z$=6.1
• CMB-induced radio quenching of high-redshift jetted AGNs with highly magnetic hotspots
• SAGAN -- III: New insights into giant radio quasars
• Stellar Tidal Disruption Events by Direct Collapse Black Holes
• Radio Power from a Direct-Collapse Black Hole in CR7
• Exploratory Chandra observation of the ultraluminous quasar SDSS J010013.02+280225.8 at redshift 6.30
• Radio Power from Direct-Collapse Black Holes
• RAiSE X: searching for radio galaxies in X-ray surveys
• XMM-Newton observation of the ultraluminous quasar SDSS J010013.02+280225.8 at redshift 6.326
• Radio Emission from the First Quasars at $z\sim$ 6-15
• Monster radio jet (>66 kpc) observed in quasar at z$\sim$5
• Self-Similar Approach for Rotating Magnetohydrodynamic Solar and Astrophysical Structures
• Superluminal Motion and Jet Parameters in the High-Redshift Blazar J1429+5406
• Cosmological test using the high-redshift detection rate of FSRQs with the Square Kilometer Array
• Building a Radio AGN Sample from Cosmic Morning -- The Radio High-Redshift Quasar Catalog (RHzQCat): I. Catalog from SDSS Quasars and Radio Surveys at $z>3$