62 citations · 66 across the 3 of their papers we have counts for
4 papers · 1 filter
The hidden giant: discovery of an enormous Galactic dwarf satellite in Gaia DR2
G. Torrealba, V. Belokurov, S. E. Koposov +8
We report the discovery of a Milky Way satellite in the constellation of Antlia. The Antlia 2 dwarf galaxy is located behind the Galactic disc at a latitude of a…
Galaxy Cluster Mass Estimates in the Presence of Substructure
Evan Tucker, Matthew G. Walker, Mario Mateo +3
We develop and implement a model to analyze the internal kinematics of galaxy clusters that may contain subpopulations of galaxies that do not independently trace the cluster poten…
Astrophysical explanations of suspected dark matter signals in dwarf galaxies
Alex Geringer-Sameth, Savvas M. Koushiappas, Matthew G. Walker +3
We present methods to assess whether gamma-ray excesses towards Milky Way dwarf galaxies can be attributed to astrophysical sources rather than to dark matter annihilation. As a ca…
Snake in the Clouds: A new nearby dwarf galaxy in the Magellanic bridge
Sergey E. Koposov, Matthew G. Walker, Vasily Belokurov +9
We report the discovery of a nearby dwarf galaxy in the constellation of Hydrus, between the Large and the Small Magellanic Clouds. Hydrus 1 is a mildy elliptical ultra-faint syste…