The correlations between the ellipticity and the age and mass of LMC globular clusters are examined and both are found to be weak. It is concluded that neither of these properties are mainly responsible for the observed differences in the LMC and Galactic globular cluster ellipticity distributions. Most importantly, age cannot be the primary factor in the LMC-Galaxy ellipticity differences, eve...

We analyze the laser ellipticity dependence of n-photon differential cross sections (dσn/dΩ) for electron-atom scattering in an intense elliptically polarized laser field. We show that there exist two plateau-like structures in the dependence of dσn/dΩ on n for any ellipticity, including for the case of circular polarization. We present numerical predictions for e-H scattering in a CO2-laser fi...

Galaxies are elliptical in nature, but we assume this property to be inherently random across all space, such that the total ellipticity with respect to a given point averages out to zero. A DMH between us and the observed galaxies will bend space-time, forcing the galaxies to appear to have a different ellipticity than they actually do. This phenomenon is known as gravitational lensing, and wa...

Received June 15, 2010; accepted July 20, 2010; posted October 14, 2010 (Doc. ID 130156); published January 5, 2011 We measure the infrared (wavelength λ = 11 − 0.8 μm; energy E = 0.1 − 1.5 eV) Faraday rotation and ellipticity in GaAs, BaF2, LaSrGaO4, LaSrAlO4, and ZnSe. Since these materials are commonly used as substrates and windows in infrared magneto-optical measurements, it is important t...

We have studied morphological evolution in clusters simulated in the adiabatic limit and with radiative cooling. Cluster morphology in the redshift range, 0 < z < 0.5, is quantified by multiplicity and ellipticity. In terms of ellipticity, our result indicates slow evolution in cluster shapes compared to those observed in the X-ray and optical wavelengths. The result is consistent with Floor, M...

The ellipticity function of cosmic voids exhibits strong dependence on the amplitude of the linear matter power spectrum. Analyzing the most recent void catalogs constructed by Foster and Nelson from the fifth data release of the Sloan Digital Sky Survey, we measure observationally the ellipticity function of giant galaxy voids. Then, we incorporate the redshift distortion and galaxy bias effec...

The recent PVLAS experiment observed the rotation of polarization and the ellipticity when a linearly polarized laser beam passes through a transverse magnetic field. The phenomenon cannot be explained in the conventional QED. We attempt to accommodate the result by employing an effective theory for the electromagnetic field alone. No new particles with a mass of order the laser frequency or be...

We measure the ellipticity of isolated clusters of galaxies in the Sloan Digital Sky Survey (SDSS) using gravitational lensing. We stack the clusters, rotating so that the major axes of the ellipses determined by the positions of cluster member galaxies are aligned. We exclude the signal from the central 0.5 h Mpc to avoid problems with stacking alignment and cluster member contamination. We fi...