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4 papers · 1 filter
Using H-alpha Morphology and Surface Brightness Fluctuations to Age-Date Star Clusters in M83
Bradley C. Whitmore, Rupali Chandar, Hwihyun Kim +21
We use new WFC3 observations of the nearby grand design spiral galaxy M83 to develop two independent methods for estimating the ages of young star clusters. The first method uses t…
The cosmic-ray electron flux measured by the PAMELA experiment between 1 and 625 GeV
PAMELA Collaboration, O. Adriani, G. C. Barbarino +64
Precision measurements of the electron component in the cosmic radiation provide important information about the origin and propagation of cosmic rays in the Galaxy. Here we presen…
The G0 Experiment: Apparatus for Parity-Violating Electron Scattering Measurements at Forward and Backward Angles
G0 Collaboration, D. Androic, D. S. Armstrong +127
In the G0 experiment, performed at Jefferson Lab, the parity-violating elastic scattering of electrons from protons and quasi-elastic scattering from deuterons is measured in order…
Transverse Beam Spin Asymmetries at Backward Angles in Elastic Electron-Proton and Quasi-elastic Electron-Deuteron Scattering
The G0 Collaboration, D. Androić, D. S. Armstrong +67
We have measured the beam-normal single-spin asymmetries in elastic scattering of transversely polarized electrons from the proton, and performed the first measurement in quasi-ela…