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Showing 1–4 of 4 results
Advanced filters: Author: Noam Libeskind Clear advanced filters

  • The Andromeda galaxy is surrounded by a highly lopsided system of dwarf galaxies. Simulations show that the observed distribution is highly unexpected in the current cosmological model, raising questions about the viability of the cosmological paradigm.

    • Kosuke Jamie Kanehisa
    • Marcel S. Pawlowski
    • Noam Libeskind
    ResearchOpen Access
    Nature Astronomy
    Volume: 9, P: 692-701

  • By stacking thousands of cosmic filaments and examining the velocity of galaxies perpendicular to the filament’s axis, it is shown that they display vortical motion consistent with rotation, signifying that angular momentum can be generated on unexpectedly large scales.

    • Peng Wang
    • Noam I. Libeskind
    • Quan Guo
    Research
    Nature Astronomy
    Volume: 5, P: 839-845

  • Reconstructing matter density from the velocities of local galaxies in a linear manner is standard practice. Averaging over the density fields of an ensemble of nonlinear simulations reveals a stronger galaxy ‘bias’ than in the linear regime, providing insights into the distribution of dark matter and the formation of galaxies.

    • Yehuda Hoffman
    • Edoardo Carlesi
    • Gustavo Yepes
    Research
    Nature Astronomy
    Volume: 2, P: 680-687