Showing 141 - 160 results of 271 for search '"cold dark matter"', query time: 0.11s Refine Results
  1. 141

    Symmetry restoration in the vicinity of neutron stars with a nonminimal coupling by Masato Minamitsuji, Shinji Tsujikawa

    Published 2023-05-01
    “…After ϕ starts to oscillate about the potential minimum, the same field can also be the source for cold dark matter.…”
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  2. 142

    3-Form Cosmology: Phantom Behaviour, Singularities and Interactions by João Morais, Mariam Bouhmadi-López, João Marto

    Published 2017-03-01
    “…In this work, we explore the possibility of avoiding such singularity via an interaction in the dark sector between cold dark matter and the 3-form field. For the kind of interactions considered, we deduce a condition for replacing the LSBR by a late time de Sitter phase. …”
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  3. 143

    Temporal evolution of cosmological density perturbations of the Bose–Einstein condensate dark matter by Subhra Mondal, Amitava Choudhuri

    Published 2024-02-01
    “…We find that the Bose–Einstein condensate model of dark matter could modify the temporal nature of density contrast evolution due to the presence of self-interaction and quantum pressure terms, which shows significant differences with respect to the conventional standard cold dark matter, and successfully solves the small-scale problems in the context of cosmological structure formation.…”
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  4. 144

    Dark matter effect on the weak deflection angle by black holes at the center of Milky Way and M87 galaxies by Reggie C. Pantig, Ali Övgün

    Published 2022-05-01
    “…We consider three known dark matter density profiles such as the Cold Dark Matter, Scalar Field Dark Matter, and the Universal Rotation Curve from the Burkert profile. …”
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  5. 145

    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

    Published 2021
    “…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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  6. 146

    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

    Published 2021
    “…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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  7. 147

    An alternative to the cosmological 'concordance model' by Blanchard, A, Douspis, M, Rowan-Robinson, M, Sarkar, S

    Published 2003
    “…Furthermore for universes consisting only of baryons and cold dark matter, the amplitude of matter fluctuations on cluster scales is too high, a problem which seems generic. …”
    Journal article
  8. 148

    Testing core creation in hydrodynamical simulations using the HI kinematics of field dwarfs by Papastergis, E, Ponomareva, A

    Published 2017
    “…Core creation is regarded as one of the most promising solutions to potential issues faced by lambda cold dark matter (ΛCDM) cosmology on small scales. For example, the reduced dynamical mass enclosed by cores can explain the low rotational velocities measured for nearby dwarf galaxies, thus possibly lifting the seeming contradiction with the ΛCDM expectations (the so-called “too big to fail” problem). …”
    Journal article
  9. 149

    WIMP matter power spectra and small scale power generation by Boehm, C, Mathis, H, Devriendt, J, Silk, J

    Published 2003
    “…The latter can be considered as Cold Dark Matter (CDM) particles in the sense that they become non relativistic before their thermal decoupling epoch. …”
    Internet publication
  10. 150

    A Virtual Sky with Extragalactic HI and CO Lines for the SKA and ALMA by Obreschkow, D, Kloeckner, H, Heywood, I, Levrier, F, Rawlings, S

    Published 2009
    “…This sky simulation builds on a semi-analytic model of the cosmic evolution of galaxies in a Lambda-cold dark matter (LCDM) cosmology. The evolving CDM-distribution was adopted from the Millennium Simulation, an N-body CDM-simulation in a cubic box with a side length of 500/h Mpc. …”
    Journal article
  11. 151

    Probing relatively heavier right-handed selectron at the CEPC, FCCee and ILC by Waqas Ahmed, Imtiaz Khan, Tianjun Li, Shabbar Raza, Wenxing Zhang

    Published 2022-09-01
    “…Such parameter spaces can not only saturate the cold dark matter relic density bound within 5σ set by the Planck 2018, but also satisfy the other standard collider mass bounds and B-physics bounds. …”
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  12. 152

    Weighing Cosmological Models with SNe Ia and Gamma Ray Burst Redshift Data by Rajendra P. Gupta

    Published 2019-05-01
    “…The purpose of this paper is to examine several suggested models using the same supernovae Ia data and gamma-ray burst (GRB) data with the same goodness-of-fit criterion and weigh them against the standard Lambda cold dark matter model (&#923;CDM). We have used the redshift&#8212;distance modulus (<i>z</i> &#8722; <i>&#956;</i>) data for 580 supernovae Ia with 0.015 &#8804; <i>z</i> &#8804; 1.414 to determine the parameters for each model and then use these model parameter to see how each model fits the sole SNe Ia data at <i>z</i> = 1.914 and the GRB data up to <i>z</i> = 8.1. …”
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  13. 153

    Potential for Definitive Discovery of a 70GeV Dark Matter WIMP with Only Second-Order Gauge Couplings by Roland Allen, Bailey Tallman, Alexandra Boone, Adhithya Vijayakumar, Fiona Lopez, Samuel Apata, Jehu Martinez

    Published 2023-02-01
    “… As astronomical observations and their interpretation improve, the case for cold dark matter (CDM) becomes increasingly persuasive. …”
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  14. 154

    Subhalo Spreading of Thin Tidal Star Streams by Raymond G. Carlberg, Hayley Agler

    Published 2023-01-01
    “…We measure the average widths and velocity dispersions of stream populations in three Milky Way–like cold dark matter cosmology simulations containing star particle globular clusters and galactic disks of 0, 1, and 2 times a baseline model. …”
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  15. 155

    Post-Inflationary Production of Dark Matter after Inflection Point Slow Roll Inflation by Anish Ghoshal, Gaetano Lambiase, Supratik Pal, Arnab Paul, Shiladitya Porey

    Published 2023-02-01
    “…We calculate the permissible range of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>y</mi><mi>χ</mi></msub></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>m</mi><mi>χ</mi></msub></semantics></math></inline-formula> for the production of enough dark matter to explain the total Cold Dark Matter (CDM) mass density of the present universe while satisfying Cosmic Background Radiation (CMBR) measurements and other cosmological bounds.…”
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  16. 156

    The Relevance of Dynamical Friction for the MW/LMC/SMC Triple System by Wolfgang Oehm, Pavel Kroupa

    Published 2024-03-01
    “…Simulations of structure formation in the standard cold dark matter cosmological model quantify the dark matter halos of galaxies. …”
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  17. 157

    Constraining the cosmological parameters using gravitational wave observations of massive black hole binaries and statistical redshift information by Liang-Gui Zhu, Yi-Ming Hu, Hai-Tian Wang, Jian-dong Zhang, Xiao-Dong Li, Martin Hendry, Jianwei Mei

    Published 2022-03-01
    “…However, in the optimistic case, where electromagnetic counterparts are available, one can obtain useful constraints on all cosmological parameters in the Lambda cold dark matter cosmology, regardless of the population model. …”
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  18. 158

    Inflection-point inflation and dark matter redux by Anish Ghoshal, Gaetano Lambiase, Supratik Pal, Arnab Paul, Shiladitya Porey

    Published 2022-09-01
    “…With the allowed parameter space from CMB, we then search for satisfactory relic abundance for DM, that can be produced from inflaton via reheating, to match with the present-day cold dark matter (CDM) relic density for the parameter spaces of the DM χ mass and Yukawa couplings in the range 10 −9 ≳ y χ ≳ 10 −15 and 103GeV ≲ m χ ≲ 109GeV. …”
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  19. 159

    Cosmological Neutrino N-Body Simulations of Dark Matter Halo by Yu Chen, Chang-Zhi Lu, Juan Li, Siqi Liu, Tong-Jie Zhang, Tingting Zhang

    Published 2023-05-01
    “…In this paper, we introduce the TianNu cosmological N-body simulation during the co-evolution of massive neutrino and cold dark matter components via the CUBEP<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>3</mn></msup></semantics></math></inline-formula>M code running on the supercomputer Tianhe-2 and TianNu’s connected works. …”
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  20. 160

    Modeling the black holes surrounded by a dark matter halo in the galactic center of M87 by Dong Liu, Yi Yang, Zhaoyi Xu, Zheng-Wen Long

    Published 2024-02-01
    “…Abstract In this paper, the structure of a dark matter halo can be well described by the mass model of M87 and the Einasto profile for the cold dark matter model, i.e., $$\rho _{\text {eina}} (r)=\rho _\text {e} \exp ( -2 \alpha ^{-1} ((r/r_\text {e})^\alpha -1 ) )$$ ρ eina ( r ) = ρ e exp ( - 2 α - 1 ( ( r / r e ) α - 1 ) ) (Wang et al. in Nature 585:39–42, 2020) . …”
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