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.
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!
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!
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.
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!
The presence of dark matter particles in barred spiral galaxies should slow down their galactic bars. However, this is not what we observe. Are galactic bars telling us to reconsider the foundations of the standard model?