127 citations · 893 across the 31 of their papers we have counts for
31 papers
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…
Spicules in IRIS Mg II Observations: Automated Identification
Vicki L. Herde, Phillip C. Chamberlin, Don Schmit +4
We have developed an algorithm to identify solar spicules in the first ever systematic survey of on-disk spicules exclusively using Mg II spectral observations. Using this algorith…
Non-thermal Broadening of IRIS Fe XXI Lines Caused by Turbulent Plasma Flows in the Magnetic Reconnection Region During Solar Eruptions
Chengcai Shen, Vanessa Polito, Katharine K. Reeves +3
Magnetic reconnection is the key mechanism for energy release in solar eruptions, where the high-temperature emission is the primary diagnostic for investigating the plasma propert…
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.…
A Statistical Study of IRIS Observational Signatures of Nanoflares and Non-thermal Particles
Kyuhyoun Cho, Paola Testa, Bart De Pontieu +1
Nanoflares are regarded as one of the major mechanisms of magnetic energy release and coronal heating in the solar outer atmosphere. We conduct a statistical study on the response…
Rapid variations of Si IV spectra in a flare observed by IRIS at a sub-second cadence
Juraj Lorincik, Vanessa Polito, Bart De Pontieu +2
We report on observations of highly-varying Si IV 1402.77 line profiles observed with the Interface Region Imaging Spectrograph (IRIS) during the M-class flare from 2022 January 18…
Diagnostics of non-Maxwellian electron distributions in solar active regions from Fe XII lines observed by Hinode/EIS and IRIS
G. Del Zanna, V. Polito, J. Dudík +3
We present joint Hinode/EIS and IRIS observations of Fe XII lines in active regions, both on-disk and off-limb. We use an improved calibration for the EIS data, and find that the 1…
Blueshifted Si IV 1402.77Å line profiles in a moving flare kernel observed by IRIS
Juraj Lörinčík, Jaroslav Dudík, Vanessa Polito
We analyze spectra of a slipping flare kernel observed during the 2015 June 22 M6.5-class flare by the Interface Region Imaging Spectrograph (IRIS). During the impulsive and peak p…
Chromospheric emission from nanoflare heating in RADYN simulations
H. Bakke, M. Carlsson, L. Rouppe van der Voort +4
Heating signatures from small-scale magnetic reconnection events in the solar atmosphere have proven to be difficult to detect through observations. Numerical models that reproduce…
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…
The Origin of Underdense Plasma Downflows Associated with Magnetic Reconnection in Solar Flares
Chengcai Shen, Bin Chen, Katharine K. Reeves +3
Magnetic reconnection is a universal process that powers explosive energy release events such as solar flares, geomagnetic substorms, and some astrophysical jets. A characteristic…
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…
Probing the physics of the solar atmosphere with the Multi-slit Solar Explorer (MUSE): I. Coronal Heating
Bart De Pontieu, Paola Testa, Juan Martinez-Sykora +24
The Multi-slit Solar Explorer (MUSE) is a proposed NASA MIDEX mission, currently in Phase A, composed of a multi-slit EUV spectrograph (in three narrow spectral bands centered arou…
The Formation and Lifetime of Outflows in a Solar Active Region
David H. Brooks, Louise Harra, Stuart D. Bale +4
Active regions are thought to be one contributor to the slow solar wind. Upflows in EUV coronal spectral lines are routinely osberved at their boundaries, and provide the most dire…
Future perspectives in solar hot plasma observations in the soft X-rays
Alain Jody Corso, Giulio Del Zanna, Vanessa Polito
The soft X-rays (SXRs: 90--150 ) are among the most interesting spectral ranges to be investigated in the next generation of solar missions due to their unique capability of dia…
A new view of the solar interface region from the Interface Region Imaging Spectrograph (IRIS)
B. De Pontieu, V. Polito, V. Hansteen +11
The Interface Region Imaging Spectrograph (IRIS) has been obtaining near- and far-ultraviolet images and spectra of the solar atmosphere since July 2013. The unique combination of…
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…
IRIS observations of the low-atmosphere counterparts of active region outflows
Vanessa Polito, Bart De Pontieu, Paola Testa +2
Active region (AR) outflows have been studied in detail since the launch of \textit{Hinode}/EIS and are believed to provide a possible source of mass and energy to the slow solar w…
Hot Plasma Flows and Oscillations in the Loop-top Region During the September 10 2017 X8.2 Solar Flare
Katharine K. Reeves, Vanessa Polito, Bin Chen +4
In this study, we investigate motions in the hot plasma above the flare loops during the 2017 September 10 X8.2 flare event. We examine the region to the south of the main flare ar…
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…
Solar Flare Energy Partitioning and Transport -- the Impulsive 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…
Solar Flare Arcade Modelling: Bridging the gap from 1D to 3D Simulations of Optically Thin Radiation
Graham S. Kerr, Joel C. Allred, Vanessa Polito
Solar flares are 3D phenomenon but modelling a flare in 3D, including many of the important processes in the chromosphere, is a computational challenge. Accurately modelling the ch…
IRIS observations of short-term variability in moss associated with transient hot coronal loops
Paola Testa, Vanessa Polito, Bart De Pontieu
We observed rapid variability ( s) at the footpoints of transient hot ( MK) coronal loops in active region cores, with the Interface Region Imaging Spectrog…
Observations of the Kelvin-Helmholtz instability driven by dynamic motions in a solar prominence
Andrew Hillier, Vanessa Polito
Prominences are incredibly dynamic across the whole range of their observable spatial scales, with observations revealing gravity-driven fluid instabilities, waves, and turbulence.…