ALERT: This system is being upgraded on Tuesday December 12. It will not be available for use for several hours that day while the upgrade is in progress. Deposits to DukeSpace will be disabled on Monday December 11, so no new items are to be added to the repository while the upgrade is in progress. Everything should be back to normal by the end of day, December 12.

Browsing by Subject "Astrophysics"

Now showing items 1-6 of 6

    • Measurement of Muon Neutrino Disappearance with the T2K Experiment 

      Wongjirad, Taritree (2014)
      We describe the measurement of muon neutrino disappearance due toneutrino oscillation using the Tokai-2-Kamiokande (T2K) experiment's Run 1-4 (6.57&times;10<super>20</super> POT)data set. We analyze the data using ...

    • Scalar Field Wave Dark Matter and Galactic Halos 

      Hamm, Benjamin (2021)
      The question of ``What is Dark Matter?" has been a focus of cosmological research since the turn of the 20th century. Though the composition of Dark Matter is unknown, the existence of Dark Matter is crucial to the modern ...

    • Semiparametric Bayesian Regression with Applications in Astronomy 

      Broadbent, Mary Elizabeth (2014)
      In this thesis we describe a class of Bayesian semiparametric models, known as Levy Adaptive Regression Kernels (LARK); a novel method for posterior computation for those models; and the applications of these models in ...

    • The Einstein-Klein-Gordon Equations, Wave Dark Matter, and the Tully-Fisher Relation 

      Goetz, Andrew Stewart (2015)
      We examine the Einstein equation coupled to the Klein-Gordon equation for a complex-valued scalar field. These two equations together are known as the Einstein-Klein-Gordon system. In the low-field, non-relativistic limit, ...

    • Wave Dark Matter and Dwarf Spheroidal Galaxies 

      Parry, Alan Reid (2013)
      We explore a model of dark matter called wave dark matter (also known as scalar field dark matter and boson stars) which has recently been motivated by a new geometric perspective by Bray. Wave dark matter describes dark ...

    • Weak Lensing Cosmology Analysis with Stage-III Cosmic Shear Surveys 

      Phillips Longley, Emily LaFrance (2023)
      As light travels from distant galaxies it is coherently bent by the gravitational potential of the mass distribution between the source and the observer. This weak gravitational lensing creates correlations between galaxy ...