The Milky Way, coming into focus: Precision astrometry probes its evolution and its dark matter

S Gardner, SD McDermott, B Yanny - Progress in Particle and Nuclear …, 2021 - Elsevier
The growing trove of precision astrometric observations from the Gaia space telescope and
other surveys is revealing the structure and dynamics of the Milky Way in ever more …

A Self-interacting Dark Matter Solution to the Extreme Diversity of Low-mass Halo Properties

EO Nadler, D Yang, HB Yu - The Astrophysical Journal Letters, 2023 - iopscience.iop.org
The properties of low-mass dark matter (DM) halos appear to be remarkably diverse relative
to cold, collisionless DM predictions, even in the presence of baryons. We show that self …

Strong lensing signatures of self-interacting dark matter in low-mass haloes

D Gilman, J Bovy, T Treu, A Nierenberg… - Monthly Notices of …, 2021 - academic.oup.com
Core formation and runaway core collapse in models with self-interacting dark matter (SIDM)
significantly alter the central density profiles of collapsed haloes. Using a forward modelling …

Strong dark matter self-interactions diversify halo populations within and surrounding the milky way

D Yang, EO Nadler, HB Yu - The Astrophysical Journal, 2023 - iopscience.iop.org
We perform a high-resolution cosmological zoom-in simulation of a Milky Way (MW)–like
system, which includes a realistic Large Magellanic Cloud analog, using a large differential …

Core-collapse, evaporation, and tidal effects: the life story of a self-interacting dark matter subhalo

ZC Zeng, AHG Peter, X Du, A Benson… - Monthly Notices of …, 2022 - academic.oup.com
Self-interacting dark matter (SIDM) cosmologies admit an enormous diversity of dark matter
(DM) halo density profiles, from low-density cores to high-density core-collapsed cusps. The …

The onset of gravothermal core collapse in velocity-dependent self-interacting dark matter subhaloes

HC Turner, MR Lovell, J Zavala… - Monthly Notices of the …, 2021 - academic.oup.com
It has been proposed that gravothermal collapse due to dark matter self-interactions (ie self-
interacting dark matter, SIDM) can explain the observed diversity of the Milky Way (MW) …

Motivations for a large self-interacting dark matter cross-section from Milky Way satellites

M Silverman, JS Bullock, M Kaplinghat… - Monthly Notices of …, 2023 - academic.oup.com
We explore the properties of Milky Way (MW) subhaloes in self-interacting dark matter
models for moderate cross-sections of 1–5 cm2 g− 1 using high-resolution zoom-in N-body …

Gravothermal solutions of SIDM halos: mapping from constant to velocity-dependent cross section

S Yang, X Du, ZC Zeng, A Benson, F Jiang… - The Astrophysical …, 2023 - iopscience.iop.org
The scale-free gravothermal fluid formalism has long proved effective in describing the
evolution of self-interacting dark matter halos with a constant dark matter particle cross …

The central densities of Milky Way-mass galaxies in cold and self-interacting dark matter models

O Sameie, M Boylan-Kolchin… - Monthly Notices of …, 2021 - academic.oup.com
We present a suite of baryonic cosmological zoom-in simulations of self-interacting dark
matter (SIDM) haloes within the 'Feedback In Realistic Environment'(FIRE) project. The three …

Snowmass2021 cosmic frontier white paper: dark matter physics from halo measurements

K Bechtol, S Birrer, FY Cyr-Racine, K Schutz… - arXiv preprint arXiv …, 2022 - arxiv.org
The non-linear process of cosmic structure formation produces gravitationally bound
overdensities of dark matter known as halos. The abundances, density profiles, ellipticities …