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QUASARS IN MASSIVE HALOS. “Recent work, however, suggests this may not be the case and that instead the first quasars may live in relatively more common halos.” https://lnkd.in/dhG6-RE View in LinkedIn

RARE LUMINOUS QUASARS. “At face value, the relative rarity of the luminous quasars in question…would suggest that these objects reside at regions of extreme overdensities and contained within the most massive halos.” https://lnkd.in/dhG6-RE View in LinkedIn

The hot dry summer is bringing forth an early autumn and is a stress for plants who are jetisoning their leaves early. View in LinkedIn

DICTUM. “Do not follow where the path may lead. Go instead where there is no path and leave a trail.” Misattributed to: Ralph Waldo Emerson. Credit due to: Muriel Strode. https://lnkd.in/d3u__g8 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

QUIET QUASARS. “Yet, strong radio emission seems to be a rare or at least short-lived phenomenon. Only about 10% of all quasars are strong radio emitters, almost independent of their redshifts up to z ~ 6.” https://lnkd.in/ds58Spd View in LinkedIn