224 citations · 350 across the 5 of their papers we have counts for
6 papers
Polar Field Correction for HMI Line-of-Sight Synoptic Data
Xudong Sun
This document provides some technical notes on the polar field correction scheme for the HMI synoptic maps and daily updated synchronic frames. It is intended as a reference for th…
Super-Flaring Active Region 12673 Has One of the Fastest Magnetic Flux Emergence Ever Observed
Xudong Sun, Aimee A. Norton
The flux emergence rate of AR 12673 is greater than any values reported in the literature of which we are aware.
Electric-Current Neutralization, Magnetic Shear, and Eruptive Activity in Solar Active Regions
Yang Liu, Xudong Sun, Tibor Török +2
The physical conditions that determine whether or not solar active regions (ARs) produce strong flares and coronal mass ejections (CMEs) are not yet well understood. Here we invest…
Comparison of Coronal Extrapolation Methods for Cycle 24 Using HMI Data
William M. Arden, Aimee A. Norton, Xudong Sun +1
Two extrapolation models of the solar coronal magnetic field are compared using magnetogram data from the SDO/HMI instrument. The two models, a horizontal current-current sheet-sou…
The Coronal Global Evolutionary Model: Using HMI Vector Magnetogram and Doppler Data to Model the Buildup of Free Magnetic Energy in the Solar Corona
George H. Fisher, William. P. Abbett, David J. Bercik +11
The most violent space weather events (eruptive solar flares and coronal mass ejections) are driven by the release of free magnetic energy stored in the solar corona. Energy can bu…
Why Is the Great Solar Active Region 12192 Flare-Rich But CME-Poor?
Xudong Sun, Monica G. Bobra, J. Todd Hoeksema +6
Solar active region (AR) 12192 of October 2014 hosts the largest sunspot group in 24 years. It is the most prolific flaring site of Cycle 24, but surprisingly produced no coronal m…