2 papers
astro-ph.GA2026
The Illusion of Morphology in Tidal Structures: Changes to Stellar Shells and Streams in Non-Spherical Haloes
Smrithi Gireesh Babu, Viraj Ekanayaka, William H. Oliver +1
We identify shell-like tidal structures in flattened haloes that appear stream-like under different projections. This projection dependence demonstrates how changes in the host hal…
astro-ph.HE2025
Gravitational Microlensing of the Galactic Centre -Ray Excess: A New Test for Point-Like or Extended Emission?
Nada Salama, Florian List, Geraint Lewis
We present a potential test of the origin of the -ray Galactic Centre Excess (GCE). We demonstrate how gravitational microlensing by stellar mass objects along the line of sigh…