Month: September 2022

ANTHROPOCENTRICITY IS EVERYWHERE. “I shouldn't have given the chimps names; they should have had numbers; I couldn't talk about personality, mind or emotions [as] those were unique to us.” (Jane Goodall on criticism of her early work). https://lnkd.in/d62kVpj View in LinkedIn

A blizzard of flowers. View in LinkedIn

BLACK HOLES. “This AGN cosmic downsizing trend is seen across a wide range of the electromagnetic spectrum in X-ray, optical, infrared, and radio wavebands. If AGN luminosity would strictly correlate with black hole mass, this finding would imply that more massive black holes formed before lower-mass black holes, which is in apparent contradiction to the currently favored hierarchical structure formation paradigm based on the standard cold dark matter model.” (AGN = active galactic nuclei). https://lnkd.in/dsQ34Hf View in LinkedIn

STAR MAKER. “Gas, mostly hydrogen, is the fuel which forms stars, and in the end forms the galaxy.”(Roland Bacon, an astrophysicist and researcher at the Centre de Recherche Astrophysique de Lyon in France). https://lnkd.in/d5V9DDa images of the 'cosmic web' reveal hidden dwarf galaxies View in LinkedIn

GAS AND BLACK HOLES. “The star formation and AGN activity may be closely connected because both processes are predominantly dependent on a cold gas supply. Therefore, it is necessary to understand the star formation history of AGN host galaxies and the connection between black hole accretion and ongoing star formation in order to study the role of AGN activity in the evolution of galaxies.” (AGN = active galactic nuclei). https://lnkd.in/dsQ34Hf View in LinkedIn

IMPORTANCE OF STAR MASS. “There has been a general consensus that the majority of star-forming galaxies show a tight correlation between the SFR and their stellar mass, commonly referred to as the main sequence (MS) of star formation.” (SFRs = star formation rates). https://lnkd.in/dsQ34Hf View in LinkedIn

ONLY TWO CRITERIA. “Massive black holes (MBHs) exist almost ubiquitously in galactic centers, which are believed to be fully specified by their masses and spins.” (MBHs = Massive black holes). https://lnkd.in/dMQEwzT View in LinkedIn

MEASUREMENTS. “Currently there are more than two dozen MBHs in AGNs having spin estimations, mainly by using the profile of the Fe Kα line and the X-ray reflection spectroscopy, and most of those MBHs are rapidly rotating.” (MBHs = Massive black holes; (AGN = active galactic nuclei). https://lnkd.in/dMQEwzT View in LinkedIn

13.8 BILLION YEARS OLD. “Primordial black holes (PBHs) are among the most intriguing ghosts in the universe. A singular PBH of sufficient mass can navigate the history of the universe without detectable clues to its existence; a true cosmic ghost.” https://lnkd.in/dggABMY View in LinkedIn

LIMIT OF WORDS. “What can be shown cannot be said.” (Wittgenstein 2007) https://lnkd.in/dhk6kes View in LinkedIn