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- Lawrence Berkeley National LaboratoryUS199 papers
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9 papers · 2 filters
Self-Similar Approach to Violent Relaxation
Richard Henriksen, Lawrence M. Widrow
We consider the evolution of an initially cold, spherically symmetric system of self-gravitating particles. At early times the system undergoes self-similar collapse of the type de…
Kinematics and Metallicities of Globular Clusters in M104
T. J. Bridges, K. M. Ashman, S. E. Zepf +4
We have obtained spectra for globular cluster candidates in M104 with LDSS-2 on the William Herschel Telescope, confirming 34 objects as M104 globular clusters. We find a cluster v…
A comparison of the globular cluster luminosity functions of the inner and outer halo of the Milky Way and M31
JJ Kavelaars, D. A. Hanes
We show that the globular cluster luminosity function (GCLF) of the inner halo of the Milky Way is statistically different from the GCLF of the outer halo. We also find a similar d…
Statistics of Gravitational Microlensing Magnification. II. Three-Dimensional Lens Distribution
Man Hoi Lee, Arif Babul, Lev Kofman +1
In Paper I we studied the theory of gravitational microlensing for a planar distribution of point masses. In this second paper, we extend the analysis to a three-dimensional lens d…
Statistics of Gravitational Microlensing Magnification. I. Two-Dimensional Lens Distribution
Lev Kofman, Nick Kaiser, Man Hoi Lee +1
(Abridged) In this paper we refine the theory of microlensing for a planar distribution of point masses. We derive the macroimage magnification distribution P(A) at high magnificat…
Test-Bed Simulations of Collisionless, Self-Gravitating Systems Using the Schrödinger Method
George Davies, Lawrence M. Widrow
The Schrödinger Method is a novel approach for modeling numerically self-gravitating, collisionless systems that may have certain advantages over N-body and phase space methods. In…