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Evidence of thermal conduction suppression in hot coronal loops: Supplementary results
Tongjiang Wang, Leon Ofman, Xudong Sun +2
Slow magnetoacoustic waves were first detected in hot (6 MK) flare loops by the SOHO/SUMER spectrometer as Doppler shift oscillations in Fe XIX and Fe XXI lines. Recently, such…
Evidence of thermal conduction suppression in a solar flaring loop by coronal seismology of slow-mode waves
Tongjiang Wang, Leon Ofman, Xudong Sun +2
Analysis of a longitudinal wave event observed by the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) is presented. A time sequence of 131 A images…
The Role of Erupting Sigmoid in Triggering a Flare with Parallel and Large-Scale Quasi-Circular Ribbons
Navin Chandra Joshi, Chang Liu, Xudong Sun +3
In this paper, we present observations and analysis of an interesting sigmoid formation, eruption and the associated flare that occurred on 2014 April 18 using multi-wavelength dat…
Complex Flare Dynamics Initiated by a Filament-Filament Interaction
Chunming Zhu, Rui Liu, David Alexander +2
We report on an eruption involving a relatively rare filament-filament interaction on 2013 June 21, observed by SDO and STEREO-B. The two filaments were separated in height with a…
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…
Photospheric Electric Fields and Energy Fluxes in the Eruptive Active Region NOAA 11158
Maria D. Kazachenko, George H. Fisher, Brian T. Welsch +2
How much electromagnetic energy crosses the photosphere in evolving solar active regions? With the advent of high-cadence vector magnetic field observations, addressing this fundam…
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…