21Sep 2022 by Nigel Fleming No Comments

linkedin post 2021-06-30 04:01:58

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“THE GOAL of this work is to explore the interplay of different physical processes that determine the masses of seed BHs, the triggering of AGN activity and the efficiency of gas accretion during the active phases of BHs, with the aim of understanding the physical origin of the observed downsizing trend in BH growth.” (BH = black hole; AGN = active galactic nuclei). https://lnkd.in/d9JV8md View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2021-06-30 04:04:42

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LUMINOSITY AND GROWTH. “Various observational studies suggest that moderately luminous AGN are typically not major-merger driven, at z < 1, and interestingly also at z ≈ 2 as they do not find more morphological distortions for AGN host galaxies than for inactive galaxies.” (AGN = active galactic nuclei). https://lnkd.in/d9JV8md View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2021-06-30 04:07:50

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EXAPTATION. “Evolution works best when it does not need to generate a whole new active site from scratch. Instead, evolution can generate a new enzyme from one that is “close”, that is, shares elements of mechanism or machinery from which the new activity can be built. Nature co-opts old machinery to do new jobs.” https://lnkd.in/d2-p85M View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments
linkedin post 2021-07-01 04:04:00

linkedin post 2021-07-01 04:04:00

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ONCE A MONTH MERGERS. “With this new discovery of neutron star-black hole mergers outside our galaxy, we have found the missing type of binary. We can finally begin to understand how many of these systems exist, how often they merge, and why we have not yet seen examples in the Milky Way.” The researchers believe that one of these violent mergers occurs about once a month within a billion light-years of Earth.“ https://www.cnn.com/2021/06/29/world/black-hole-neutron-star-merger-scn/index.html View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2021-07-01 04:15:57

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WOBBLY DISCS. “In a cosmological context, the expected rapid inflows can lead to more violent ‘stream fed’ disc instabilities, particularly at high redshift, which may drive BH feeding at high rates, and more dramatic morphological/dynamical transformation.” (BH = black hole). https://lnkd.in/d9JV8md View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2021-07-01 04:17:50

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GORGING. “The BH-to-bulge mass ratio was larger at higher redshifts than expected from the local BH–bulge mass relation. This eventually implies that BHs were accreting more gas and thus, growing faster than the corresponding bulges at high redshifts than at lower ones.” (BH = black hole). https://lnkd.in/d9JV8md View in LinkedIn
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