Black holes come in many different sizes. But is there a mass limit? The authors of today’s paper investigate the possibility of black holes a trillion times as massive as the sun. Surprisingly, they could also help explain the mysterious dark matter!
No dark matter, no modified gravitation, just general relativity. Let’s see what we can get in disk galaxies.
Should neural networks give up trying to model cosmology and stick to sorting cat photos? Find out in todays post!
If dark matter did not exist, the visible matter in the universe should be able to explain all gravitational phenomena. But can it?
When we observe galaxies and measure their dark matter halos, we exclude subhaloes from the halo’s mass profile. When we simulate haloes, we include them. But what if we didn’t?
In which cosmologists come up with yet another way to ignore pesky systematics – aka astrophysics!