The Black Hole Tango: Kicks and Spins in Hierarchical Mergers
Black hole mergers may have more dance moves than we thought—recoil kicks create intricate spin distributions for black holes from hierarchical mergers.
Dark Matter Gets a Weight Check: The Strongest Lower Bound Yet
Today’s paper has come up with the an model independent way to put a lower limit on dark matter particles!
Duel of the Dual: The Mystery of a Quasar Pair
Today’s paper explores a binary quasar system that’s full of mysteries!
The April Fools Paper Review Process – 2025
There is a tradition in Astronomy to post silly science papers to the arXiv on Aprils Fools day. We’ve collected them all for 2025 and provided some “peer review”.
Is the sigma-8 tension being sheared away? Cosmology with weak lensing from KiDS
Today’s bite looks at the final data release from the Kilo-Degree Survey, reporting a measurement of the clumpiness of the Universe as measured by weak gravitational lensing.
Watch a Supermassive Black Hole Burp in Real Time
First you see me, now you don’t… one unique supermassive black hole just changed its look. Learn how astronomers directly imaged it and found a really messy eater.