How heavy is our Galaxy?
How can the orbits of satellite galaxies be used to pin down the mass of the Milky Way?
Do the Milky Way’s Stellar Streams have that Fuzzy (Dark Matter) Feeling?
Stellar streams are an excellent tool for probing the nature of Dark Matter. Today’s paper tests whether Fuzzy Dark Matter is a viable theory by evaluating the thinness of streams in the Milky Way.
Satellite Galaxies All in a Row—How So?
Many satellite galaxies in the local universe are orbiting their parent galaxies in highly coherent planes—yet such structures are vanishingly rare in simulations. What gives?
Deciphering gamma-rays from the heart of Andromeda
Can dark matter annihilation explain multi-wavelength observations of Andromeda’s galactic center?
Yoga for dark matter: Making the Cold Dark Matter model more flexible
… and therefore more powerful. Describing dark matter as a fluid allows us to model dark matter candidates with great accuracy.
Clearing Up Stellar Streams with Gaia
What will new data from Gaia reveal about the formation and evolution of stellar streams in the Milky Way?