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@ARTICLE{Fischer:611515,
      author       = {Fischer, Moritz S. and Kasselmann, Lenard and Brüggen,
                      Marcus and Dolag, Klaus and Kahlhoefer, Felix and Ragagnin,
                      Antonio and Robertson, Andrew and Schmidt-Hoberg, Kai},
      title        = {{C}osmological and idealized simulations of dark matter
                      haloes with velocity-dependent, rare and frequent
                      self-interactions},
      journal      = {Monthly notices of the Royal Astronomical Society},
      volume       = {529},
      number       = {3},
      issn         = {0035-8711},
      address      = {Oxford},
      publisher    = {Oxford Univ. Press},
      reportid     = {PUBDB-2024-04952, arXiv:2310.07750. DESY-23-154},
      pages        = {2327-2348},
      year         = {2024},
      note         = {17 pages, 15 figures + appendices, accepted for publication
                      in MNRAS},
      abstract     = {Dark matter self-interactions may have the capability to
                      solve or at least mitigate small-scale problems of the
                      cosmological standard model, Lambda cold dark matter. There
                      are a variety of self-interacting dark matter models that
                      lead to distinguishable astrophysical predictions and hence
                      varying success in explaining observations. Studies of dark
                      matter (DM) density cores on various mass scales suggest a
                      velocity-dependent scattering cross-section. In this work,
                      we investigate how a velocity dependence alters the
                      evolution of the DM distribution for frequent DM scatterings
                      and compare to the velocity-independent case. We demonstrate
                      that these cases are qualitatively different using a test
                      problem. Moreover, we study the evolution of the density
                      profile of idealized DM haloes and find that a velocity
                      dependence can lead to larger core sizes and different
                      time-scales of core formation and core collapse. In
                      cosmological simulations, we investigate the effect of
                      velocity-dependent self-interaction on haloes and satellites
                      in the mass range of ≈10^11–|$10^{14} \, \mathrm{M_\odot
                      }$|⁠. We study the abundance of satellites, density, and
                      shape profiles and try to infer qualitative differences
                      between velocity-dependent and velocity-independent
                      scatterings as well as between frequent and rare
                      self-interactions. We find that a strongly
                      velocity-dependent cross-section can significantly amplify
                      the diversity of rotation curves, independent of the angular
                      dependence of the differential cross-section. We further
                      find that the abundance of satellites in general depends on
                      both the velocity dependence and the scattering angle,
                      although the latter is less important for strongly
                      velocity-dependent cross-sections.},
      keywords     = {dark matter: halo (INSPIRE) / mass: scale (INSPIRE) / dark
                      matter: scattering (INSPIRE) / differential cross section:
                      angular dependence (INSPIRE) / velocity dependence (INSPIRE)
                      / satellite (INSPIRE) / dark matter: density (INSPIRE) /
                      collapse (INSPIRE) / formation (INSPIRE) / rotation
                      (INSPIRE) / cosmological model (INSPIRE) / self-force
                      (INSPIRE) / dark matter: interaction (INSPIRE) / galaxy:
                      halo (INSPIRE) / numerical calculations (INSPIRE) /
                      astroparticle physics (autogen) / methods: numerical
                      (autogen) / galaxies: haloes (autogen) / dark matter
                      (autogen)},
      cin          = {T},
      ddc          = {520},
      cid          = {I:(DE-H253)T-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611) / DFG
                      project 390833306 - EXC 2121: Quantum Universe (390833306) /
                      DFG project 390783311 - EXC 2094: ORIGINS: Vom Ursprung des
                      Universums bis zu den ersten Bausteinen des Lebens
                      (390783311)},
      pid          = {G:(DE-HGF)POF4-611 / G:(GEPRIS)390833306 /
                      G:(GEPRIS)390783311},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {2310.07750},
      howpublished = {arXiv:2310.07750},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2310.07750;\%\%$},
      UT           = {WOS:001187239400017},
      doi          = {10.1093/mnras/stae699},
      url          = {https://bib-pubdb1.desy.de/record/611515},
}