732 citations
- University of Massachusetts AmherstUS84 papers
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6 papers · 1 filter
Galaxies at z=3 around Damped Ly-alpha Clouds
Nicolas Bouche, James D. Lowenthal
We are exploring the connection between damped Ly-alpha absorbers (DLAs) and Lyman break galaxies (LBGs) using deep -- (5sigma)=26 m_{AB}-- broad band imaging (UBVI) of four wide f…
The Morphology of 9 Radio-selected Faint Galaxies from deep HST Imaging
Nathan Roche, James Lowenthal, David Koo
Using the HST WFPC2 we perform deep I-band imaging of 9 radio-selected (limit 14 microJanskys at 8.5 GHz) faint galaxies from Roche, Lowenthal and Koo (2002). Two are also observed…
On the Number of Embeddings of Minimally Rigid Graphs
Ciprian Borcea, Ileana Streinu
Rigid frameworks in some Euclidian space are embedded graphs having a unique local realization (up to Euclidian motions) for the given edge lengths, although globally they may have…
Expansive Motions and the Polytope of Pointed Pseudo-Triangulations
Guenter Rote, Francisco Santos, Ileana Streinu
We introduce the polytope of pointed pseudo-triangulations of a point set in the plane, defined as the polytope of infinitesimal expansive motions of the points subject to certain…
Precision Measurement of the Proton and Deuteron Spin Structure Functions g2 and Asymmetries A2
SLAC E155 Collaboration, P. L. Anthony, R. G. Arnold +1
We have measured the spin structure functions g2p and g2d and the virtual photon asymmetries A2p and A2d over the kinematic range 0.02 < x < 0.8 and 0.7 < Q^2 < 20 GeV^2 by scatter…
Large Force Fluctuations in a Flowing Granular Medium
Emily Longhi, Nalini Easwar, Narayanan Menon
We report the characteristics of the temporal fluctuations in the local force delivered to the wall of a 2D hopper by a granular medium flowing through it. The forces are predomina…