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RED SHIFTS. “The quasar luminosity function (QLF) has been canonically described at all redshifts by a double power law, or where faint end data is not available, by a single power law at its bright end.” https://lnkd.in/dhG6-RE View in LinkedIn

THE TRIO. “The remarkably tight local M–σ relation hints toward a deep connection between a host galaxy and its respective black hole and by extension, a connection between galaxies and their AGNs.” (AGN = active galactic nuclei). https://lnkd.in/dhG6-RE View in LinkedIn

Classic sleepy town in the summer heat (Portbo, Catalonia). View in LinkedIn

“LANGUAGE flows like a stream from distant sources of the early Stone Age, connecting our mind with the mind of our ancestors...[but] we do everything possible to forget the messages that come to us from the past.” Theodore Thepienemann-Thass (1967) The Subconscious Language. https://lnkd.in/dpZWtHc View in LinkedIn

RARE COMBO. “On the other hand, identifying strong radio emitters at high redshift has been difficult. The highest-redshift radio galaxy lies at z = 5.7, with the previous record at z = 5.2. Out of the 200 published quasars at z > 6, only three are known to be radio-loud.” https://lnkd.in/ds58Spd View in LinkedIn

EXPANDING KNOWLEDGE. “The number of astronomical objects known within the first billion years of the universe has increased dramatically over the last few years, with galaxies being discovered up to z ~ 11 and quasars up to z ~ 7.5.” https://lnkd.in/ds58Spd View in LinkedIn

QUASARS AND DARK MATTER. “Furthermore, radio-loud sources deep in the epoch of reionization would enable crucial absorption studies of the intergalactic medium (IGM) at this critical epoch and they could potentially also constrain the nature of dark matter particles by detecting neutral hydrogen in absorption in the radio spectrum.” https://lnkd.in/ds58Spd View in LinkedIn

LOUD QUASARS, “Radio-loud sources at the highest accessible redshifts are of particular interest for multiple reasons. For example, radio galaxies are known to be good tracers of overdense environments, and at high redshift these overdensities could be the progenitors of the galaxy clusters seen in the present-day universe.” https://lnkd.in/ds58Spd View in LinkedIn

MOST LUMINOUS QUASAR. “The measured Eddington ratio of 0.4 places SMSS J2157 within the typical distribution of luminous quasars, implying that the extreme nature of its luminosity is a consequence of its extraordinarily high BH mass.” (BH = black hole). https://lnkd.in/eU2xwdUN View in LinkedIn

DOORWAY. “High-luminosity quasars offer important windows into the densest concentrations of baryons at high redshift, as they are likely to reside in well-developed galaxies.” https://lnkd.in/eU2xwdUN View in LinkedIn