110 citations · 886 across the 40 of their papers we have counts for
41 papers
A New Framework for Modeling Solar Flares from MHD to Kinetic Processes
Joel C. Allred, Graham S. Kerr, Silvina E. Guidoni +4
Physical processes in solar flares span many orders of magnitude in spatiotemporal scales, so a single unified model accounting for all relevant processes remains computationally i…
Probing progression of heating through the lower flare atmosphere via high-cadence IRIS spectroscopy
Juraj Lörinčík, Vanessa Polito, Graham S. Kerr +2
Recent high-cadence flare campaigns by the Interface Region Imaging Spectrograph (IRIS) have offered new opportunities to study rapid processes characteristic of flare energy relea…
Fe I 6173 Å Emission During White-Light Solar Flares
Samuel Granovsky, Alexander G. Kosovichev, Viacheslav M. Sadykov +2
Between 2017 and 2024, the Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory has observed numerous white-light solar flares (WLFs). HMI spectro-polarime…
Precise timing of solar flare footpoint sources from mid-infrared observations
Paulo J. A. Simões, Lyndsay Fletcher, Hugh S. Hudson +3
Solar flares are powerful particle accelerators, and in the accepted standard flare model most of the flare energy is transported from a coronal energy-release region by accelerate…
Solar Flare Ribbon Fronts. II. Evolution of heating rates in individual flare footpoints
Graham S. Kerr, Vanessa Polito, Yan Xu +1
Solar flare ribbon fronts appear ahead of the bright structures that normally characterise solar flares, and can persist for an extended period of time in spatially localised patch…
A Possible Mechanism for "Late Phase" in Stellar White-Light Flares
Kai E. Yang, Xudong Sun, Graham S. Kerr +1
M-dwarf flares observed by the \textit{Transiting Exoplanet Survey Satellite} (\textit{TESS}) sometimes exhibit a "peak-bump" light-curve morphology, characterized by a secondary,…
An Optically Thin View of the Flaring Chromosphere: Nonthermal widths in a chromospheric condensation during an X-class solar flare
Graham S. Kerr, Adam F. Kowalski, Joel C. Allred +2
The bulk of solar flare energy is deposited in the chromosphere. Flare ribbons and footpoints in the chromosphere therefore offer great diagnostic potential of flare energy release…
Extreme Red-wing Enhancements of UV Lines During the 2022 March 30 X1.3 Solar Flare
Yan Xu, Graham S. Kerr, Vanessa Polito +3
Here we present the study of a compact emission source during an X1.3 flare on 2022-March-30. Within a ~s period (17:34:48 UT to 17:35:29 UT), IRIS observations show spectr…
Next-Generation Comprehensive Data-Driven Models of Solar Eruptive Events
Joel C. Allred, Graham S. Kerr, Meriem Alaoui +11
Solar flares and coronal mass ejections are interrelated phenomena that together are known as solar eruptive events. These are the main drivers of space weather and understanding t…
Fundamentals of impulsive energy release in the corona
Albert Y. Shih, Lindsay Glesener, Säm Krucker +30
It is essential that there be coordinated and co-optimized observations in X-rays, gamma-rays, and EUV during the peak of solar cycle 26 (~2036) to significantly advance our unders…
The need for focused, hard X-ray investigations of the Sun
Lindsay Glesener, Albert Y. Shih, Amir Caspi +46
Understanding the nature of energetic particles in the solar atmosphere is one of the most important outstanding problems in heliophysics. Flare-accelerated particles compose a hug…
Can Proton Beam Heating Flare Models Explain Sunquakes?
Viacheslav Sadykov, John Stefan, Alexander Kosovichev +4
SDO/HMI observations reveal a class of solar flares with substantial energy and momentum impacts in the photosphere, concurrent with white-light emission and helioseismic responses…
Prospects of Detecting Non-thermal Protons in Solar Flares via Lyman Line Spectroscopy: Revisiting the Orrall-Zirker Effect
Graham S. Kerr, Joel C. Allred, Adam F. Kowalski +5
Solar flares are efficient particle accelerators, with a substantial fraction of the energy released manifesting as non-thermal particles. While the role that non-thermal electrons…
Formation Of The Lyman Continuum During Solar Flares
Shaun A. McLaughlin, Ryan O. Milligan, Graham S. Kerr +3
The Lyman Continuum (LyC; Å) forms at the top of the chromosphere in the quiet-Sun, making LyC a powerful tool for probing the chromospheric plasma during solar flares. To…
Interrogating Solar Flare Loop Models with IRIS Observations 1: Overview of the Models, and Mass flows
Graham S. Kerr
Solar flares are transient yet dramatic events in the atmosphere of the Sun, during which a vast amount of magnetic energy is liberated. This energy is subsequently transported thr…
Interrogating Solar Flare Loop Models with IRIS Observations 2: Plasma Properties, Energy Transport, and Future Directions
Graham S. Kerr
During solar flares a tremendous amount of magnetic energy is released and transported through the Sun's atmosphere and out into the heliosphere. Despite over a century of study, m…
Solar Flare Ribbon Fronts I: Constraining flare energy deposition with IRIS spectroscopy
Vanessa Polito, Graham S. Kerr, Yan Xu +2
Lower atmospheric lines show peculiar profiles at the leading edge of ribbons during solar flares. In particular, increased absorption of the BBSO/GST \hei~10830~Å line \citep[e.g.…
Radiative losses in the chromosphere during a C-class flare
Rahul Yadav, J. de la Cruz Rodríguez, Graham S. Kerr +2
Solar flares release an enormous amount of energy into the corona. A substantial fraction of this energy is transported to the lower atmosphere, which results in chromospheric heat…
Solar Flare Heating with Turbulent Suppression of Thermal Conduction
Joel C. Allred, Graham S. Kerr, A. Gordon Emslie
During solar flares plasma is typically heated to very high temperatures, and the resulting redistribution of energy via thermal conduction is a primary mechanism transporting ener…
The Atmospheric Response to High Nonthermal Electron Beam Fluxes in Solar Flares. II. Hydrogen Broadening Predictions for Solar Flare Observations with the Daniel K. Inouye Solar Telescope
Adam F. Kowalski, Joel C. Allred, Mats Carlsson +5
Red-shifted components of chromospheric emission lines in the hard X-ray impulsive phase of solar flares have recently been studied through their 30 s evolution with the high resol…
Multi-Passband Observations of A Solar Flare over the He I 10830 Å line
Yan Xu, Xu Yang, Graham S. Kerr +5
This study presents a C3.0 flare observed by the BBSO/GST and IRIS, on 2018-May-28 around 17:10 UT. The Near Infrared Imaging Spectropolarimeter (NIRIS) of GST was set to spectral…
Probing the Physics of the Solar Atmosphere with the Multi-slit Solar Explorer (MUSE): II. Flares and Eruptions
Mark C. M. Cheung, Juan Martínez-Sykora, Paola Testa +25
Current state-of-the-art spectrographs cannot resolve the fundamental spatial (sub-arcseconds) and temporal scales (less than a few tens of seconds) of the coronal dynamics of sola…
He I 10830 Å Dimming During Solar Flares, I. The Crucial Role of Non-Thermal Collisional Ionisations
Graham S. Kerr, Yan Xu, Joel C. Allred +4
While solar flares are predominantly characterised by an intense broadband enhancement to the solar radiative output, certain spectral lines and continua will, in theory, exhibit f…
Solar Flare Energy Partitioning and Transport -- the Gradual Phase (a Heliophysics 2050 White Paper)
Graham S. Kerr, Meriem Alaoui, Joel C. Allred +14
Solar flares are a fundamental component of solar eruptive events (SEEs; along with solar energetic particles, SEPs, and coronal mass ejections, CMEs). Flares are the first compone…