71 citations · 170 across the 16 of their papers we have counts for
16 papers
Quasi-periodic pulsations and three-dimensional magnetic reconnection during 2022 March 31 flare observed by IRIS & STIX
Juraj Lorincik, Hannah Collier, Vanessa Polito +3
Apparent slipping motions of flare ribbon kernels and the formation of hard X-ray (HXR) footpoints are important signatures of magnetic reconnection in solar flares. Ultraviolet (U…
Understanding Solar Flares and Energetic Events: Open questions, observational requirements, and instrumental needs over the coming decade
Malcolm K. Druett, Graham S. Kerr, Joel C. Allred +15
Solar flares are the largest energy-release events in the Solar System, allowing us to study fundamental physical phenomena under extreme conditions. Those include magnetic reconne…
A sudden fine-scale bright kernel captured by Hi-C Flare in 11 MK emission during an M1.6-class solar flare's post-maximum phase
Sanjiv K. Tiwari, Navdeep K. Panesar, Ronald L. Moore +17
On April 17, 2024, the third successful Hi-C sounding rocket flight, Hi-C Flare, recorded coronal images in Fe XXI 129 A emission from 11 MK plasma during the post-maximum phase of…
Solar Flare Ion Temperatures
Alexander J. B. Russell, Vanessa Polito, Paola Testa +2
This paper proposes that the ion temperature is several times the local electron temperature in the hot onset phase and at the above-the-loop region of solar flares. The paper cons…
Modeling of Ionization and Recombination Processes in Plasma with Arbitrary Non-Maxwellian Electron Distributions
Chengcai Shen, Xiaocan Li, Yuan-Kuen Ko +4
In astronomical environments, the high-temperature emission of plasma mainly depends on ion charge states, which requires accurate analysis of the ionization and recombination proc…
Solar Orbiter's 2024 Major Flare Campaigns: An Overview
Daniel F. Ryan, Laura A. Hayes, Hannah Collier +17
Solar Orbiter conducted a series of flare-optimised observing campaigns in 2024 utilising the Major Flare Solar Orbiter Observing Plan (SOOP). Dedicated observations were performed…
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…
Identifying Spicules in Mg II: Statistics and Comparisons with Hα
Vicki L. Herde, Souvik Bose, Phillip C. Chamberlin +4
The Sun's chromosphere is a critical region to understand when considering energy and mass deposition into the transition region and corona, but many of the smaller, faster events…
Solar flares in the Solar Orbiter era: Short-exposure EUI/FSI observations of STIX flares
Hannah Collier, Laura A. Hayes, Stefan Purkhart +10
Aims: This paper aims to demonstrate the importance of short-exposure extreme ultraviolet (EUV) observations of solar flares in the study of particle acceleration, heating and ener…
Non-thermal Observations of a Flare Loop-top using IRIS Fe XXI: Implications for Turbulence and Electron Acceleration
William Ashfield, Vanessa Polito, Sijie Yu +2
The excess broadening of high-temperature spectral lines, long observed near the tops of flare arcades, is widely considered to result from magnetohydrodynamic (MHD) turbulence. Ac…
The Solar eruptioN Integral Field Spectrograph
Vicki L. Herde, Phillip C. Chamberlin, Don Schmit +17
The Solar eruptioN Integral Field Spectrograph (SNIFS) is a solar-gazing spectrograph scheduled to fly in the summer of 2025 on a NASA sounding rocket. Its goal is to view the sola…
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…
Localising pulsations in the hard X-ray and microwave emission of an X-class flare
Hannah Collier, Laura A. Hayes, Sijie Yu +5
Aims: This work aims to identify the mechanism driving pulsations in hard X-ray (HXR) and microwave emission during solar flares. Here, by using combined HXR and microwave observat…
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…
Investigating the response of loop plasma to nanoflare heating using RADYN simulations
V. Polito, P. Testa, J. Allred +5
We present the results of 1D hydrodynamic simulations of coronal loops which are subject to nanoflares, caused by either in-situ thermal heating, or non-thermal electrons (NTE) bea…
Density diagnostics derived from the OIV and SIV intercombination lines observed by IRIS
V. Polito, G. Del Zanna, J. Dudík +3
The intensity of the \oiv~2s 2p P-2s2p P and \siv~3 s 3p P- 3s 3p P intercombination lines around 1400~Å~observed with the \textit{…