Showing 101 - 120 results of 171 for search '"dark matter"', query time: 0.08s Refine Results
  1. 101

    Stability of evolving cluster of stars and exotic matter by Wasee Shahid, Rubab Manzoor, Saadia Mumtaz, Syed Ali Mardan, Adnan Malik

    Published 2024-12-01
    “…It is found that the density of dark matter overcomes the density of matter for large values of dark matter parameter n.…”
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  2. 102

    Multi-messenger probes of asteroid mass primordial black holes: Superradiance spectroscopy, Hawking radiation, and microlensing by James B. Dent, Bhaskar Dutta, Tao Xu

    Published 2025-02-01
    “…Superradiance provides a unique opportunity for investigating dark sectors as well as primordial black holes, which themselves are candidates for dark matter over a wide mass range. Using axion-like particles as an example, we show that line signals emerging from a superradiated axion cloud combined with black hole Hawking radiation in extragalactic and galactic halos, along with microlensing observations lead to complementary constraints on parameter space combinations including the axion-photon coupling, axion mass, black hole mass, and its dark matter fraction, fPBH. …”
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  3. 103

    Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures by Durmuş Demir

    Published 2019-01-01
    “…The zero coupling, certifying an undetectable NP, agrees with all the collider and dark matter bounds at present. The seesawic bound ΛSM2/ΛNP2, directly verifiable at colliders, implies that (i) dark matter must have a mass ≲ΛSM, (ii) Higgs-curvature coupling must be ≈1.3%, (iii) the SM RGEs must remain nearly as in the SM, and (iv) right-handed neutrinos must have a mass ≲1000  TeV. …”
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  4. 104

    5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM by Keir K. Rogers, Vivian Poulin

    Published 2025-01-01
    “…We find that combined Planck cosmic microwave background, baryon acoustic oscillations, and supernovae data analyzed under Λ cold dark matter (ΛCDM) are in 4.9σ tension with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Lyα forest in inference of the linear matter power spectrum at wave number ∼1hMpc^{−1} and redshift = 3. …”
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  5. 105

    Review of the Empirical Evidence for Superluminal Particles and the 3 + 3 Model of the Neutrino Masses by Robert Ehrlich

    Published 2019-01-01
    “…This possibility requires an 8 MeV antineutrino line from SN 1987A, which a new dark matter model has been found to support. Furthermore, this dark matter model is supported by several datasets: γ-rays from the galactic center, and the Kamiokande-II neutrino data on the day of SN 1987A. …”
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  6. 106

    Axions in the dark dimension by Naomi Gendler, Cumrun Vafa

    Published 2024-12-01
    “…The axion mass surprisingly coincides with the mass scale for the dark energy, the dark matter tower, and the neutrinos. In this scenario axions are not expected to form a large fraction of the dark matter but nevertheless this range of axion parameters is accessible to observations in near future experiments.…”
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  7. 107

    On the Jeans Theorem and the “Tolman–Oppenheimer–Volkoff Equation” in R2 Gravity by Rishabh Jain, Burra G. Sidharth, Christian Corda

    Published 2016-01-01
    “…Those states could represent a partial solution to the Dark Matter Problem. Here, we discuss an improvement of this work. …”
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  8. 108

    Small neutrino masses from a decoupled singlet scalar field by Jongkuk Kim, Seong-Sik Kim, Hyun Min Lee, Rojalin Padhan

    Published 2025-02-01
    “…We discuss the important roles of the Z4 symmetry for neutrino masses, dark matter physics and thermal leptogenesis.…”
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  9. 109

    Dark Atoms and the Positron-Annihilation-Line Excess in the Galactic Bulge by J.-R. Cudell, M. Yu. Khlopov, Q. Wallemacq

    Published 2014-01-01
    “…It was recently proposed that stable particles of charge −2, O--, can exist and constitute dark matter after they bind with primordial helium in O-helium (OHe) atoms. …”
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  10. 110

    Searching for dark torsion signatures at LIGO in Nieh–Yan teleparallel chiral gravitational waves and Chern–Simons invariants by L. C. Garcia de Andrade

    Published 2024-12-01
    “…Abstract Romano has recently found that frequency modulation of gravitational waves (GWs) could be used as a dark matter probe. Many candidates for dark matter (DM) of various sources have been proposed in the literature. …”
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  11. 111

    Clustering of X-Ray-Selected AGN by N. Cappelluti, V. Allevato, A. Finoguenov

    Published 2012-01-01
    “…It then became evident that the distribution of X-ray AGN in the Universe was strongly reflecting that of Dark Matter. In particular, one of the key results is that X-ray AGNs are hosted by dark matter halos of mass similar to that of galaxy groups. …”
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  12. 112

    Dark QCD perspective inspired by strong CP problem at QCD scale by Bin Wang, Shinya Matsuzaki, Hiroyuki Ishida

    Published 2025-01-01
    “…We also briefly address nontrivial cosmological aspects, such as those related to the dark-chiral phase transition, the dark matter production, and an ultraviolet completion related to the ultralight ALP.…”
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  13. 113

    Cosmic Microwave Background as a Thermal Gas of SU(2) Photons: Implications for the High-z Cosmological Model and the Value of H0 by Steffen Hahn, Ralf Hofmann

    Published 2017-01-01
    “…This tension arises when fitting the Lambda-cold-dark-matter model (ΛCDM) to the high-precision temperature-temperature (TT) power spectrum of the Cosmic Microwave Background (CMB) and to local cosmological observations. …”
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  14. 114

    Mimetic Gravity: A Review of Recent Developments and Applications to Cosmology and Astrophysics by Lorenzo Sebastiani, Sunny Vagnozzi, Ratbay Myrzakulov

    Published 2017-01-01
    “…Mimetic gravity is a Weyl-symmetric extension of General Relativity, related to the latter by a singular disformal transformation, wherein the appearance of a dust-like perfect fluid can mimic cold dark matter at a cosmological level. Within this framework, it is possible to provide a unified geometrical explanation for dark matter, the late-time acceleration, and inflation, making it a very attractive theory. …”
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  15. 115

    Scoto-seesaw model implied by flavor-dependent Abelian gauge charge by Duong Van Loi, N. T. Duy, Cao H. Nam, Phung Van Dong

    Published 2025-01-01
    “…We also investigate the potential dark matter candidates by considering relic density and direct detection.…”
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  16. 116

    Smooth Crossing of wΛ=−1 Line in a Single Scalar Field Model by Abhik Kumar Sanyal

    Published 2009-01-01
    “…Smooth double crossing of the phantom divide line wΛ=−1 has been found possible with a single minimally coupled scalar field for the most simple form of generalized k-essence cosmological model, in the presence of background cold dark matter. Such crossing is a sufficiently late time transient phenomenon and does not have any pathological behaviour.…”
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  17. 117

    Maximum value of the spin-independent cross section in the 2HDM+a by Tomohiro Abe, Motoko Fujiwara, Junji Hisano, Yutaro Shoji

    Published 2020-01-01
    “…Abstract We investigate the maximum value of the spin-independent cross section (σSI) in a dark matter (DM) model called the two-Higgs doublet model + a (2HDM+a). …”
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  18. 118
  19. 119

    Dynamics of Mixed Dark Energy Domination in Teleparallel Gravity and Phase-Space Analysis by Emre Dil, Erdinç Kolay

    Published 2015-01-01
    “…Here we propose a mixed dark energy domination which is constituted by tachyon, quintessence, and phantom scalar fields nonminimally coupled to gravity, in the absence of background dark matter and baryonic matter, in the framework of teleparallel gravity. …”
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  20. 120

    Dynamics of Cylindrical Collapse in Palatini Gravity by Sana Saleem, Rubab Manzoor, S. A. Mardan, Sundas Shahzadi

    Published 2024-01-01
    “…Lastly, we investigate the correlation between dark matter and gravitational waves and find that exotic terms disrupt the transmission of gravitational waves. …”
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