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Showing 1 to 7 of 7 for “"Dark matter (Astronomy)"”.

  1. Cosmology with Weak Lensing Peaks

    … simulations, in which we identify individual dark matter halos. We study the halos' contribution to the peaks. We find that high peaks are typically dominated by a single massive halo, while low peaks are created by galaxy shape noise, but with an important contribution from a line-of-sight …

    columbia-diss Repository record for Cosmology with Weak Lensing Peaks (opens in a new tab)

  2. An Accelerator Measurement of Atomic X-ray Yields in Exotic Atoms and Implications for an Antideuteron-Based Dark Matter Search

    … (GAPS) is a novel approach for indirect dark matter searches that exploits cosmic antideuterons. The low energy antideuteron provides a clean dark matter signature, since the antideuteron production by cosmic ray interactions is suppressed at low energy, while the WIMP-WIMP annihilation …

    columbia-diss Repository record for An Accelerator Measurement of Atomic X-ray Yields in Exotic Atoms and Implications for an Antideuteron-Based Dark Matter Search (opens in a new tab)

  3. An atom trap trace analysis (ATTA) system for measuring ultra-low contamination by krypton in xenon dark matter detectors

    The XENON dark matter experiment aims to detect hypothetical weakly interacting massive particles (WIMPs) scattering off nuclei within its liquid xenon (LXe) target. The trace 85Kr in the xenon target undergoes beta-decay with a 687 keV end point and 10.8 year halflife, which contributes background …

    columbia-diss Repository record for An atom trap trace analysis (ATTA) system for measuring ultra-low contamination by krypton in xenon dark matter detectors (opens in a new tab)

  4. The Light Response of the XENON100 Time Projection Chamber and the Measurements of the Optical Parameters with the Xenon Scintillation Light

    … candidates to explain the non-baryonic, cold dark matter in our Universe. XENON100, the successor experiment of XENON10, has increased the target liquid xenon mass to 61 kg with a 100 times reduction in background rate enabling a large increase in sensitivity to WIMP- nucleon interaction …

    columbia-diss Repository record for The Light Response of the XENON100 Time Projection Chamber and the Measurements of the Optical Parameters with the Xenon Scintillation Light (opens in a new tab)

  5. XENON100 Dark Matter Search: Scintillation Response of Liquid Xenon to Electronic Recoils

    Dark matter is one of the missing pieces necessary to complete the puzzle of the universe. Numerous astrophysical observations at all scales suggest that 23% of the universe is made of nonluminous, cold, collisionless, nonbaryonic, yet undiscovered dark matter. Weakly Interacting Massive Particles …

    columbia-diss Repository record for XENON100 Dark Matter Search: Scintillation Response of Liquid Xenon to Electronic Recoils (opens in a new tab)

  6. Design of a micro-machined cantilever apparatus suitable for testing Modified Newtonian Dynamics

    lethbridge