Understanding shape and centroid deviations in 39 strong lensing galaxy clusters in various dynamical states by Gassis Raven, Bayliss Matthew B., Sharon Keren, Mahler Guillaume, Gladders Michael D., Dahle Håkon, Florian Michael K., Rigby Jane R., McDonald Michael, Elicker Lauren, Owens M. Riley

“…Through observational tests of strong lensing galaxy clusters, we can test simulation derived structure predictions that follow from Λ Cold Dark Matter (ΛCDM) cosmology. The shape and centroid deviations between the total matter distribution, stellar matter distributions, and hot intracluster gas distribution serve as an observational test of these theoretical structure predictions. …”
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A white paper on keV sterile neutrino dark matter by Winslow, Lindley

“…Here, we first review the physics motivation for sterile neutrino Dark Matter, based on challenges and tensions in purely cold Dark Matter scenarios. We then round out the discussion by critically summarizing all known constraints on sterile neutrino Dark Matter arising from astrophysical observations, laboratory experiments, and theoretical considerations. …”
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Effective theories for a nonrelativistic field in an expanding universe: Induced self-interaction, pressure, sound speed, and viscosity by Salehian, Borna, Namjoo, Mohammad H, Kaiser, David I

“…Abstract A massive, nonrelativistic scalar field in an expanding spacetime is usually approximated by a pressureless perfect fluid, which leads to the standard conclusion that such a field can play the role of cold dark matter. In this paper, we systematically study these approximations, incorporating subleading corrections. …”
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Effective theories for a nonrelativistic field in an expanding universe: Induced self-interaction, pressure, sound speed, and viscosity by Salehian, Borna, Namjoo, Mohammad H, Kaiser, David I

“…Abstract A massive, nonrelativistic scalar field in an expanding spacetime is usually approximated by a pressureless perfect fluid, which leads to the standard conclusion that such a field can play the role of cold dark matter. In this paper, we systematically study these approximations, incorporating subleading corrections. …”
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Galaxy kinematics and mass calibration in massive SZE-selected galaxy clusters to z = 1.3

“…However, the dynamical masses are lower (at the 2.2σ level) when compared to the mass calibration favoured when fitting the SPT cluster data to a Λcold dark matter model with external cosmological priors, including cosmic microwave background anisotropy data from Planck. …”
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ETHOS – an effective theory of structure formation: predictions for the high-redshift Universe – abundance of galaxies and reionization by Lovell, Mark R, Zavala, Jesús, Vogelsberger, Mark, Shen, Xuejian, Cyr-Racine, Francis-Yan, Pfrommer, Christoph, Sigurdson, Kris, Boylan-Kolchin, Michael, Pillepich, Annalisa

“…We contrast predictions for the high-redshift galaxy population and reionization history between cold dark matter (CDM) and an alternative self-interacting dark matter model based on the recently developed ETHOS framework that alleviates the small-scale CDM challenges within the Local Group.We perform the highest resolution hydrodynamical cosmological simulations (a 36 Mpc3 volume with gas cell mass of ~105M⊙ and minimum gas softening of ~180 pc) within ETHOS to date - plus a CDM counterpart - to quantify the abundance of galaxies at high redshift and their impact on reionization. …”
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ETHOS – an effective theory of structure formation: predictions for the high-redshift Universe – abundance of galaxies and reionization by Lovell, Mark R, Zavala, Jesús, Vogelsberger, Mark, Vogelsberger, Mark, Shen, Xuejian, Cyr-Racine, Francis-Yan, Pfrommer, Christoph, Sigurdson, Kris, Boylan-Kolchin, Michael, Pillepich, Annalisa

“…We contrast predictions for the high-redshift galaxy population and reionization history between cold dark matter (CDM) and an alternative self-interacting dark matter model based on the recently developed ETHOS framework that alleviates the small-scale CDM challenges within the Local Group.We perform the highest resolution hydrodynamical cosmological simulations (a 36 Mpc3 volume with gas cell mass of ~105M⊙ and minimum gas softening of ~180 pc) within ETHOS to date - plus a CDM counterpart - to quantify the abundance of galaxies at high redshift and their impact on reionization. …”
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ETHOS – an Effective Theory of Structure Formation: detecting dark matter interactions through the Lyman-α forest by Bose, Sownak, Vogelsberger, Mark, Zavala, Jesús, Pfrommer, Christoph, Cyr-Racine, Francis-Yan, Bohr, Sebastian, Bringmann, Torsten

“…In particular, we use the ETHOS framework to compare statistics of the Lyman-α forest in cold dark matter (CDM) with an alternative model in which the DM couples strongly with a relativistic species in the early universe. …”
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Diverse dark matter density at sub-kiloparsec scales in Milky Way satellites: Implications for the nature of dark matter by Zavala, Jesús, Lovell, Mark R, Vogelsberger, Mark, Burger, Jan D

“…We argue that if confirmed, this large diversity in the MW satellite population poses a serious test for the structure formation theory with possible implications for the DM nature. For the cold dark matter model, the diversity might be a signature of the combined effects of subhalo tidal disruption by the MW disk and strong supernova feedback. …”
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A rumble in the dark: signatures of self-interacting dark matter in supermassive black hole dynamics and galaxy density profiles by Di Cintio, Arianna, Tremmel, Michael, Governato, Fabio, Pontzen, Andrew, Zavala, Jesús, Bastidas Fry, Alexander, Brooks, Alyson, Vogelsberger, Mark

“…Milky Way-like galaxies form a shallower DM density profile in SIDM than they do in cold dark matter (CDM), with differences already at 20 kpc scales. …”
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Subhalo demographics in the Illustris simulation: effects of baryons and halo-to-halo variation by Chua, Kun Ting Eddie, Pillepich, Annalisa, Rodriguez-Gomez, Vicente, Vogelsberger, Mark, Bird, Simeon, Hernquist, Lars

“…We study the abundance of subhaloes in the hydrodynamical cosmological simulation Illustris, which includes both baryons and dark matter in a cold dark matter volume 106.5Mpc a side. We compare Illustris to its dark-matter only (DMO) analogue, Illustris-Dark and quantify the effects of baryonic processes on the demographics of subhaloes in the host mass range 1011-3 × 1014M⊙. …”
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The inner structure of early-type galaxies in the Illustris simulation by Xu, Dandan, Springel, Volker, Sluse, Dominique, Schneider, Peter, Sonnenfeld, Alessandro, Nelson, Dylan, Vogelsberger, Mark, Hernquist, Lars

“…© 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society Early-type galaxies provide unique tests for the predictions of the cold dark matter cosmology and the baryonic physics assumptions entering models for galaxy formation. …”
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The interplay of self-interacting dark matter and baryons in shaping the halo evolution by Despali, Giulia, Sparre, Martin, Vegetti, Simona, Vogelsberger, Mark, Zavala, Jesús, Marinacci, Federico

“…We use high-resolution hydrodynamical simulation to test the difference of halo properties in cold dark matter (CDM) and a self-interacting dark matter (SIDM) scenario with a constant cross-section of σ T /m ' ‡ = 1 cm 2 g '1. …”
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The halo mass function and inner structure of ETHOS haloes at high redshift by Bohr, Sebastian, Zavala, Jesús, Cyr-Racine, Francis-Yan, Vogelsberger, Mark

“…Scenarios such as cold dark matter (CDM), thermal warm dark matter (WDM), and dark acoustic oscillations (DAOs) of various strengths are contained in ETHOS with just two parameters hpeak and kpeak, the amplitude and scale of the first DAO peak. …”
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Scattering, damping, and acoustic oscillations: Simulating the structure of dark matter halos with relativistic force carriers by Buckley, Matthew R., Zavala, Jesus, Cyr-Racine, Francis-Yan, Sigurdson, Kris, Vogelsberger, Mark

“…We demonstrate that self-interacting dark matter models with interactions mediated by light particles can have significant deviations in the matter power spectrum and detailed structure of galactic halos when compared to a standard cold dark matter scenario. While these deviations can take the form of suppression of small-scale structure that are in some ways similar to that of warm dark matter, the self-interacting models have a much wider range of possible phenomenology. …”
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Dark-matter-deficient dwarf galaxies form via tidal stripping of dark matter in interactions with massive companions by Jackson, RA, Kaviraj, S, Martin, G, Devriendt, JEG, Slyz, A, Silk, J, Dubois, Y, Yi, SK, Pichon, C, Volonteri, M, Choi, H, Kimm, T, Kraljic, K, Peirani, S

“…In the standard ΛCDM (Lambda cold dark matter) paradigm, dwarf galaxies are expected to be dark matter-rich, as baryonic feedback is thought to quickly drive gas out of their shallow potential wells and quench star formation at early epochs. …”

Searching for modified gravity: scale and redshift dependent constraints from galaxy peculiar velocities by Johnson, A, Blake, C, Dossett, J, Koda, J, Parkinson, D, Joudaki, S

“…Furthermore, accounting for the Alcock-Paczynski effect, we perform joint fits for the expansion history and growth index γ we measure γ = 0.665 ± 0.067 (68 per cent CL) for a fixed expansion history, and γ = 0.73-0.10+0.08(68 per cent CL) when the expansion history is allowed to deviate from Λ cold dark matter. For the latter case, we observe a 2σ tension with the standard model where γ = 0.554.…”

Power spectrum analysis of Redshift surveys by Tadros-Attalla, H

“…The results are inconsistent with the standard cold dark matter model. The shape of P( k) for clusters is approximately the same as that for Stromlo-APM galaxies but amplified by a factor of ~ 3.5.…”

Aspects of dark matter phenomenology by McCabe, C

“…Identifying the relic particles that constitute the cold dark matter in our Universe is an outstanding problem in astro-particle physics. …”

The shapes of the rotation curves of star-forming galaxies over the last ≈10 Gyr by Tiley, A, Swinbank, A, Harrison, C, Smail, I, Turner, O, Schaller, M, Stott, J, Sobral, D, Theuns, T, Sharples, R, Gillman, S, Bower, R, Bunker, A, Best, P, Richard, J, Bacon, R, Bureau, M, Cirasuolo, M, Magdis, G

“…Drawing comparisons with hydrodynamical simulations, we show that the average shapes of the rotation curves for our sample of massive, star-forming galaxies at z ≈ 0–2.2 are consistent with those expected from lambda cold dark matter theory and imply dark matter fractions within 6Rd of at least ≈60 per cent.…”