As the universe’s temperatures drop, there is a type of dark matter that can freeze-in. There is one consequence: it’s a bit of a drag.
Today’s undergraduate research post is all about a search for dark matter in the starburst galaxy M82!
We share some exciting highlights from a recent conference
In the past decade we have witnessed the rise and fall of primordial black holes as dark matter candidates. Today’s paper summary hints at their return in the coming decade.
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.