35 citations · 111 across the 10 of their papers we have counts for
11 papers
Spectroscopic Observations of Supra-Arcade Downflows
Ryan J. French, Maria D. Kazachenko, Teodora Mihailescu +1
Despite their somewhat-frequent appearance in EUV imaging of off-limb flares, the origins of Supra-Arcade Downflows (SADs) remain a mystery. Appearing as dark, tendril-like downflo…
X-ray and Spectral UV Observations of Periodic Pulsations in a Solar Flare Fan/Looptop
Ryan J. French, Laura A. Hayes, Maria D. Kazachenko +3
We present simultaneous X-ray and spectral ultraviolet (UV) observations of strikingly-coherent oscillations in emission from a coronal looptop and fan structure, during the impuls…
Spatially Resolved Plasma Composition Evolution in a Solar Flare -- The Effect of Reconnection Outflow
Andy S. H. To, David H. Brooks, Shinsuke Imada +6
Solar flares exhibit complex variations in elemental abundances compared to photospheric values. We examine the spatial and temporal evolution of coronal abundances in the X8.2 fla…
Doppler Signature of a Possible Termination Shock in an Off-Limb Solar Flare
Ryan J. French, Sijie Yu, Bin Chen +2
We report striking Doppler velocity gradients observed during the well-observed September 10th 2017 solar flare, and argue that they are consistent with the presence of an above-th…
Slow Solar Wind Connection Science during Solar Orbiter's First Close Perihelion Passage
Stephanie L. Yardley, Christopher J. Owen, David M. Long +76
The Slow Solar Wind Connection Solar Orbiter Observing Plan (Slow Wind SOOP) was developed to utilise the extensive suite of remote sensing and in situ instruments on board the ESA…
Observational Evidence of S-Web Source of the Slow Solar Wind
D. Baker, P. Demoulin, S. L. Yardley +25
From 2022 March 18-21, active region (AR) 12967 was tracked simultaneously by Solar Orbiter (SO) at 0.35 au and Hinode/EIS at Earth. During this period, strong blue-shifted plasma…
First Observation of Chromospheric Waves in a Sunspot by DKIST/ViSP: The Anatomy of an Umbral Flash
Ryan J. French, Thomas J. Bogdan, Roberto Casini +2
The Visible Spectro-Polarimeter (ViSP) of the NSF Daniel K. Inouye Solar Telescope (DKIST) collected its Science Verification data on May 7-8, 2021. The instrument observed multipl…
Probing Current Sheet Instabilities from Flare Ribbon Dynamics
Ryan J. French, Sarah A. Matthews, I. Jonathan Rae +1
The presence of current sheet instabilities, such as the tearing mode instability, are needed to account for the observed rate of energy release in solar flares. Insights into thes…
Sensitivity of solar wind mass flux to coronal temperature
D. Stansby, L. Berčič, L. Matteini +4
Solar wind models predict that the mass flux carried away from the Sun in the solar wind should be extremely sensitive to the temperature in the corona, where the solar wind is acc…
Dynamics of Late-Stage Reconnection in the 2017 September 10 Solar Flare
Ryan J. French, Sarah A. Matthews, Lidia van Driel-Gesztelyi +2
In this multi-instrument paper, we search for evidence of sustained magnetic reconnection far beyond the impulsive phase of the X8.2-class solar flare on 2017 September 10. Using H…
Spectropolarimetric Insight into Plasma-Sheet Dynamics of a Solar Flare
Ryan J. French, Philip G. Judge, Sarah A. Matthews +1
We examine spectropolarimetric data from the CoMP instrument, acquired during the evolution of the September 10th 2017 X8.2 solar flare on the western solar limb. CoMP captured lin…