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Browsing MIT Open Access Articles by Author "Bertschinger, Edmund"

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Browsing MIT Open Access Articles by Author "Bertschinger, Edmund"

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  • Bertschinger, Edmund; Mohayaee, Roya; Afshordi, Niayesh (American Physical Society, 2009-04)
    Most of the mass content of dark matter haloes is expected to be in the form of tidal debris. The density of debris is not constant, but rather can grow due to formation of caustics at the apocenters and pericenters of ...
  • Mohayaee, Roya; Afshordi, Niayesh; Bertschinger, Edmund (American Physical Society, 2010-05)
    We develop a theoretical framework for describing the hierarchical structure of the phase space of cold dark matter haloes, due to gravitationally bound substructures. Because it includes the full hierarchy of the cold ...
  • Bertschinger, Edmund (Royal Society, The, 2011-12)
    The metric of a perturbed Robertson–Walker space–time is characterized by three functions: a scale-factor giving the expansion history and two potentials that generalize the single potential of Newtonian gravity. The ...
  • Amin, Mustafa Abdulkader; Zukin, Phillip Gregory; Bertschinger, Edmund (American Physical Society, 2012-05)
    We investigate the observational consequences of the quintessence field rolling to and oscillating near a minimum in its potential, if it happens close to the present epoch (z[less than or equal to]0.2). We show that in a ...
  • Sanderson, Robyn Ellyn; Bertschinger, Edmund (IOP Publishing, 2010-11)
    Indirect detection of high-energy particles from dark matter interactions is a promising avenue for learning more about dark matter, but is hampered by the frequent coincidence of high-energy astrophysical sources of ...
  • Zukin, Phillip Gregory; Bertschinger, Edmund (American Physical Society, 2010-11)
    N-body simulations have revealed a wealth of information about dark matter halos; however, their results are largely empirical. Using analytic means, we attempt to shed light on simulation results by generalizing the ...
  • Zukin, Phillip Gregory; Bertschinger, Edmund (American Physical Society, 2010-11)
    Using a generalized self-similar secondary infall model, which accounts for tidal torques acting on the halo, we analyze the velocity profiles of halos in order to gain intuition for N-body simulation results. We analytically ...
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