3 papers
astro-ph.GA2023
On the Late-Time Evolution of Velocity-Dependent Self-Interacting Dark Matter Halos
Sophia Gad-Nasr, Kimberly K. Boddy, Manoj Kaplinghat +2
We study the evolution of isolated self-interacting dark matter (SIDM) halos that undergo gravothermal collapse and are driven deep into the short-mean-free-path regime. We assume…
astro-ph.GA2020
An unexpected high concentration for the dark substructure in the gravitational lens SDSSJ0946+1006
Quinn E. Minor, Sophia Gad-Nasr, Manoj Kaplinghat +1
The presence of an invisible substructure has previously been detected in the gravitational lens galaxy SDSSJ0946+1006 through its perturbation of the lensed images. Using flexible…
astro-ph.CO2020
Velocity-dependent Self-interacting Dark Matter from Groups and Clusters of Galaxies
Laura Sagunski, Sophia Gad-Nasr, Brian Colquhoun +2
We probe the self-interactions of dark matter using observational data of relaxed galaxy groups and clusters. Our analysis uses the Jeans formalism and considers a wider range of s…