Radio Emission from the First Quasars at $z\sim$ 6-15

Abstract

Nearly 300 quasars have now been found at $z>$ 6, including nine at $z>$ 7. They are thought to form from the collapse of supermassive primordial stars to 10${}^4$ - 10${}^5$ M${}_{\odot }$ black holes at $z\sim$ 20 - 25, which then rapidly grow in the low-shear environments of rare, massive halos fed by strong accretion flows. Sensitive new radio telescopes such as the Next-Generation Very Large Array (ngVLA) and the Square Kilometer Array (SKA) could probe the evolution of these objects at much earlier times. Here, we estimate radio flux from the first quasars at $z\sim$ 6 - 15 at 0.5 - 12.5 GHz. We find that SKA and ngVLA could detect a quasar like ULAS J1120+0641, a 1.35 $\times$ 10${}^9$ M${}_{\odot }$ black hole at $z=$ 7.1, at much earlier stages of evolution, $z\sim$ 14 - 15, with 100 hr integration times in targeted searches. The advent of these new observatories, together with the James Webb Space Telescope (JWST), Euclid, and the Roman Space Telescope (RST), will inaugurate the era of $z\lesssim$ 15 quasar astronomy in the coming decade.

5 pages, 3 figures, accepted by MNRAS Letters

References in corpus (31)

• A luminous quasar at a redshift of z = 7.085
• A Luminous Quasar at Redshift 7.642
• Pōniuā'ena: A Luminous $z=7.5$ Quasar Hosting a 1.5 Billion Solar Mass Black Hole
• The Fundamental Plane of Accretion Onto Black Holes with Dynamical Masses
• The Destruction of Cosmological Minihalos by Primordial Supernovae
• Refining the fundamental plane of accreting black holes
• The Fundamental Plane of Black Hole Accretion and its Use as a Black Hole-Mass Estimator
• Anticipated Performance of the Square Kilometre Array -- Phase 1 (SKA1)
• Turbulent Cold Flows Gave Birth to the First Quasars
• The first blazar observed at z>6
• The Birth Mass Function of Pop III Stars
• The discovery of a highly accreting, radio-loud quasar at z=6.82
• Forming massive seed black holes in high-redshift quasar host progenitors
• Host galaxies of high-redshift quasars: supermassive black hole growth and feedback
• The Pan-STARRS1 z>5.6 quasar survey II: Discovery of 55 Quasars at 5.6<z<6.5
• Parsec-scale properties of the radio brightest jetted AGN at z > 6
• The most massive black holes on the Fundamental Plane of Black Hole Accretion
• Discovery of 24 radio-bright quasars at $4.9\le z\le 6.6$ using low-frequency radio observations
• The descendants of the first quasars in the BlueTides simulation
• Modeling Supermassive Primordial Stars with MESA
• Do high redshift quasars have powerful jets?
• Enhanced X-ray Emission from the Most Radio-Powerful Quasar in the Universe's First Billion Years
• On the Evolution of Supermassive Primordial Stars in Cosmological Flows
• Finding Direct-Collapse Black Holes at Birth
• Evidence for heavy seed origin of early supermassive black holes from a z~10 X-ray quasar
• VLBI observations of VIK J2318-3113, a quasar at z = 6.44
• Radio Power from a Direct-Collapse Black Hole in CR7
• Radio Power from Direct-Collapse Black Holes
• Paving the Way for Euclid and JWST via Optimal Selection of High-z Quasars
• Quasars and the Intergalactic Medium at Cosmic Dawn
• Proceedings of 'Advancing Astrophysics with the SKA' (AASKA14) - Continuum Science' Chapters

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