Cosmic Echolocation: A New Method to Measure Dark Matter with Gravitational Waves
In this astrobite, astrophysicists use gravitational waves to “listen” for the presence of dark matter and infer its properties!
UR: The Atomic Dark Matter Model: A Possible Solution to the Shortcomings of CDM
Could dark matter behave similarly to regular matter? If so, could dark matter halos collapse and form structures, like a black hole? In this work we explore the Atomic Dark Matter Model and predicting structure formation in it using simple algebra. We build on the current literature by showing that for certain values of the variables that govern dark matter interactions, we won’t be able to determine if the halo will be able to collapse using methods to track the dark matter number densities and how efficiently the halo can dispose of its initial energy.
Defining Gravity: Can Wide Binaries be a Definitive Test of Modified Newtonian Gravity Theories?
Today’s paper posits that precise observations of wide binaries can be used, in conjunction with simulations, to test the validity of modified gravity theories!
Do you see new physics in my CMB?
Hi I’m Kayla, and this is my best friend Boots! With new CMB experiments coming online in the next decade, come along with me to find out what some astronomers are hoping to discover!
How to turn two galaxies into ten
A group of galaxies — some rich in dark matter, and some lacking dark matter completely — could be explained by a violent, destructive event from their past.
Stare into the Void
The distribution of galaxies clusters (BAOs) are a beloved tool for cosmological analysis. But what about cosmic voids? Stare into the void, and you might just learn something new!