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A Consistent Microlensing Model for the Galactic Bar
HongSheng Zhao, R. M. Rich, D. N. Spergel
We compute a microlensing map for the Galactic bar. The predicted event rate and event duration distribution are consistent with the events recently reported by the MACHO and…
Cosmological-Parameter Determination with Microwave Background Maps
Gerard Jungman, Marc Kamionkowski, Arthur Kosowsky +1
The angular power spectrum of the cosmic microwave background (CMB) contains information on virtually all cosmological parameters of interest, including the geometry of the Univers…
Weighing the Universe with the Cosmic Microwave Background
Gerard Jungman, Marc Kamionkowski, Arthur Kosowsky +1
Variations in , the total density of the Universe, leave a clear and distinctive imprint on the power spectrum of temperature fluctuations in the cosmic microwave background (CM…
THE FORMATION OF LSB GALAXIES
J. J. Dalcanton, D. N. Spergel, F J Summers
The formation of low surface brightness galaxies is an unavoidable prediction of any hierarchical clustering scenario. In these models, low surface brightness galaxies form at late…
The Disruption of the Sagittarius Dwarf Galaxy.
Kathryn V. Johnston, David N. Spergel, Lars Hernquist
Numerical simulations of dwarf spheroidal galaxies undergoing several close encounters with the Milky Way are described. By comparing our models to observed properties of the recen…