@article{9c67a658de3a465ba0733bb1d6870dd1,
title = "Probing Self-interacting Dark Matter with Disk Galaxies in Cluster Environments",
abstract = "Self-interacting dark matter (SIDM) has long been proposed as a solution to small-scale problems posed by standard cold dark matter. We use numerical simulations to study the effect of dark matter interactions on the morphology of disk galaxies falling into galaxy clusters. The effective drag force on dark matter leads to offsets of the stellar disk with respect to the surrounding halo, causing distortions in the disk. For anisotropic scattering cross sections of 0.5 and 1.0 cm2 g-1, we show that potentially observable warps, asymmetries, and thickening of the disk occur in simulations. We discuss observational tests of SIDM with galaxy surveys and more realistic simulations needed to obtain detailed predictions.",
keywords = "astroparticle physics, dark matter, galaxies: clusters: general, galaxies: structure",
author = "Secco, {Lucas F.} and Amanda Farah and Bhuvnesh Jain and Susmita Adhikari and Arka Banerjee and Neal Dalal",
note = "Funding Information: We thank Philip Hopkins, Denis Yurin, and Volker Springel for making their respective codes GIZMO, GalIC, and GADGET-2 publicly available. We also thank Denis Yurin for clarifying GalIC{\textquoteright}s documentation in private correspondence. We are grateful to Tara da Cunha for help with running the simulations and helpful discussions. We also thank Raul Angulo, Eric Baxter, Jo Bovy, Vinicius Busti, Mariana Carrillo-Gonzalez, Basudeb Dasgupta, Mike Jarvis, Andrey Kravtsov, Vinicius Miranda, Riccardo Penco, Eduardo Rozo, Jerry Sellwood, and Jake VanderPlas for useful comments and suggestions. LFS and BJ are supported in part by the US Department of Energy grant DE-SC0007901. Publisher Copyright: {\textcopyright} 2018. The American Astronomical Society. All rights reserved.",
year = "2018",
month = jun,
day = "10",
doi = "10.3847/1538-4357/aac271",
language = "English (US)",
volume = "860",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1",
}