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The Preference for Evolving Dark Energy from Cosmological Distance Measurements and Possible Signatures in the Growth Rate of Perturbations
Ryan E. Keeley, Kevork N. Abazajian, Manoj Kaplinghat +1
In this study, we use a flexible parametrization of the equation of state of dark energy to explore its possible evolution with datasets from the Dark Energy Spectroscopic Instrume…
Numerical Challenges in Modeling Gravothermal Collapse in Self-Interacting Dark Matter Halos
Igor Palubski, Oren Slone, Manoj Kaplinghat +2
When dark matter has a large cross section for self scattering, halos can undergo a process known as gravothermal core collapse, where the inner core rapidly increases in density a…
Astrophysical Tests of Dark Matter Self-Interactions
Susmita Adhikari, Arka Banerjee, Kimberly K. Boddy +11
Self-interacting dark matter (SIDM) arises generically in scenarios for physics beyond the Standard Model that have dark sectors with light mediators or strong dynamics. The self-i…
A semi-analytic study of self-interacting dark-matter haloes with baryons
Fangzhou Jiang, Andrew Benson, Philip F. Hopkins +8
We combine the isothermal Jeans model and the model of adiabatic halo contraction into a simple semi-analytic procedure for computing the density profile of self-interacting dark-m…
Orbital Evolution of Satellite Galaxies in Self-Interacting Dark Matter Models
Oren Slone, Fangzhou Jiang, Mariangela Lisanti +1
Dark matter self interactions can leave distinctive signatures on the properties of satellite galaxies around Milky Way--like hosts through their impact on tidal stripping, ram pre…
A Stringent Upper Limit on Dark Matter Self-Interaction Cross Section from Cluster Strong Lensing
Kevin E. Andrade, Jackson Fuson, Sophia Gad-Nasr +4
We analyze strongly lensed images in 8 galaxy clusters to measure their dark matter density profiles in the radial region between 10 kpc and 150 kpc, and use this to constrain the…