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53 papers · 2 filters
Estimates of Cosmological Parameters Using the CMB Angular Power Spectrum of ACBAR
J. H. Goldstein, P. A. R. Ade, J. J. Bock +14
We report an investigation of cosmological parameters based on the measurements of anisotropy in the cosmic microwave background radiation (CMB) made by ACBAR. We use the ACBAR dat…
Improved Measurement of the Angular Power Spectrum of Temperature Anisotropy in the CMB from Two New Analyses of BOOMERANG Observations
J. E. Ruhl, P. A. R. Ade, J. J. Bock +27
We report the most complete analysis to date of observations of the Cosmic Microwave Background (CMB) obtained during the 1998 flight of BOOMERANG. We use two quite different metho…
Temperature Variations from HST Spectroscopy of the Orion Nebula
R. H. Rubin, P. G. Martin, R. J. Dufour +5
We present HST/STIS long-slit spectroscopy of NGC 1976. Our goal is to measure the intrinsic line ratio [O III] 4364/5008 and thereby evaluate the electron temperature (T_e) and th…
Observational constraints on the curvaton model of inflation
Christopher Gordon, Antony Lewis
Simple curvaton models can generate a mixture of of correlated primordial adiabatic and isocurvature perturbations. The baryon and cold dark matter isocurvature modes differ only b…
Ionized Disc Models of MCG-6-30-15
D. R. Ballantyne, A. C. Fabian, S. Vaughan
Ionized reflection is one of the possible mechanisms proposed to explain the small short-timescale variability of the MCG-6-30-15 Fe K line. In this contribution, we show fits of t…
Radiative Torques on Interstellar Grains. III. Dynamics with Thermal Relaxation
Joseph C. Weingartner, B. T. Draine
In the previous papers in this series, we found that radiative torques can play a major role in the alignment of grains with the interstellar magnetic field. Since the radiative to…