Dr. Becky - “Why doesn’t dark matter collapse into black holes?”

https://www.youtube.com/watch?v=VmWNTlVFcJw

#astrophysics #DrBecky #darkMatter #blackHoles

Why doesn’t dark matter collapse into black holes?

YouTube

Here are my suggestions on how to handle three kinds of metaphorical holes: assholes, potholes, and black holes.

https://www.conferencesthatwork.com/index.php/life-lessons/2023/05/assholes-potholes-black-holes

#assholes #blackholes #potholes #obsession #advice

The Drivers of the Decline in Supermassive Black Hole Growth at z < 2: https://iopscience.iop.org/article/10.3847/1538-4357/ae173d -> Chandra Resolves Why #BlackHoles Hit the Brakes on Growth: https://chandra.si.edu/press/26_releases/press_032426.html / https://chandra.si.edu/photo/2026/bhgrowth/ -> Chandra Explains Why Black Hole Growth Slowed Since Cosmic Noon: https://chandra.si.edu/blog/node/954
The Drivers of the Decline in Supermassive Black Hole Growth at z < 2

The Drivers of the Decline in Supermassive Black Hole Growth at z < 2, Yu, Zhibo, Brandt, W. N., Zou, Fan, Luo, Bin, Ni, Qingling, Schneider, D. P., Vito, Fabio

Can someone help me fix the Wikipedia page on the black hole information paradox (https://en.wikipedia.org/wiki/Black_hole_information_paradox)? It says

> the black hole radiates mass at a rate given by dM/dt = -aT⁴ where a is constant related to fundamental constants, including the Stefan–Boltzmann constant and certain properties of the black hole spacetime called its greybody factors.

The next paragraph says that M is inversely proportional to T and that the black hole evaporates in time proportional to M³. But this isn't consistent because solving dM/dt = -a/M⁴ gives an evaporation time proportional to M⁵.

I think it's the first formula that's wrong and it should be dM/dt = -aT². But I don't know quite enough to feel confident making an edit. Is there someone out there who knows what the fix should be?

#Physics #BlackHole #BlackHoles

Black hole information paradox - Wikipedia

The long‑term tracking of star S2 orbiting Sagittarius A* continues to be one of the most compelling confirmations of General Relativity. Over 27 years of observations show a clear Schwarzschild precession: the orbit doesn’t close but slowly rotates due to the intense curvature of spacetime near the supermassive black hole.
A beautiful example of how precision astronomy can test fundamental physics.

#Astrophysics #GeneralRelativity #BlackHoles #Science

New in the #VirtualObservatory: “Compilation of optical tidal disruption events” by Langis D.A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A171
#XRaySources #Accretion #BlackHoles #ActiveGalacticNuclei
VizieR J/A+A/707/A171

VizieR catalogues

A Sense of Doubt blog post-3914 - MOVING BLACK HOLES??? And Math and Black Holes. https://sensedoubt.blogspot.com/2026/03/a-sense-of-doubt-blog-post-3914-moving.html #blackholes #space #math #science