44 citations · 104 across the 5 of their papers we have counts for
4 papers · 1 filter
Magnetograph Saturation and the Open Flux Problem
Y. -M. Wang, R. K. Ulrich, J. W. Harvey
Extrapolations of line-of-sight photospheric field measurements predict radial interplanetary magnetic field (IMF) strengths that are factors of ~2--4 too low. To address this "ope…
Zeemanfit: Use and Development of the solis_vms_zeemanfit code
Anna L. H. Hughes, Jack Harvey, Andrew R. Marble +1
The purpose of the SOLIS Zeemanfit Code is to provide a straight-forward, easily checked measure of the total magnetic-field strength in the high-strength umbral regions of the sol…
Comparison of Ground- and Space-based Longitudinal Magnetograms
A. Pietarila, L. Bertello, J. W. Harvey +1
We compare photospheric line-of-sight magnetograms from the Synoptic Long-term Investigations of the Sun (SOLIS) vector spectromagnetograph (VSM) instrument with observations from…
Improvements in the determination of ISS Ca II K parameters
Luca Bertello, Alexei A. Pevtsov, Jack W. Harvey +1
Measurements of the ionized Ca II K line are one of the major resources for long-term studies of solar and stellar activity. They also play a critical role in many studies related…