316 citations
- Australian National UniversityAU1 paper
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6 papers · 1 filter
Subsurface Meridional Circulation in the Active Belts
I. Gonzalez Hernandez, S. Kholikov, F. Hill +2
Temporal variations of the subsurface meridional flow with the solar cycle have been reported by several authors. The measurements are typically averaged over periods of time durin…
The SEGUE Stellar Parameter Pipeline. II. Validation with Galactic Globular and Open Clusters
Y. S. Lee, T. C. Beers, T. Sivarani +13
We validate the performance and accuracy of the current SEGUE (Sloan Extension for Galactic Understanding and Exploration) Stellar Parameter Pipeline (SSPP), which determines stell…
Sensitivity of solar off-limb line profiles to electron density stratification and the velocity distribution anisotropy
N. -E. Raouafi, S. K. Solanki
The effect of the electron density stratification on the intensity profiles of the H I Ly- line and the O VI and Mg X doublets formed in solar coronal holes is investigated. We…
Detection of opposite polarities in a sunspot light bridge: evidence of low-altitude magnetic reconnection
Lokesh Bharti, Thomas Rimmele, Rajmal Jain +1
A multi-wavelength photometric analysis was performed in order to study the sub-structure of a sunspot light bridge in the photosphere and the chromosphere. Active region NOAA 8350…
Solar Wind Forecasting with Coronal Holes
S. Robbins, C. J. Henney, J. W. Harvey
An empirical model for forecasting solar wind speed related geomagnetic events is presented here. The model is based on the estimated location and size of solar coronal holes. This…
Sun-as-a-Star Spectrum Variations 1974-2006
W. Livingston, L. Wallace, O. R. White +1
We have observed selected Fraunhofer lines, both integrated over the Full Disk and for a small circular region near the center of the solar disk, on 1,215 days for the past 30 year…