42 citations · 209 across the 17 of their papers we have counts for
18 papers
Solar Orbiter observations of solar energetic electron events associated with hard microflares
Diane Mittaine, Andrea Francesco Battaglia, Laura Rodríguez-García +4
Generally, large solar flares accelerate electrons to high energies more efficiently than microflares. However, some microflares, known as hard microflares (HMFs), also produce hig…
ZIMPOL detects scattering polarization in He I D during a solar flare
Francesco Vitali, Andrea Francesco Battaglia, Luca Belluzzi +5
Spectropolarimetric observations of solar flares in the He I D line at 5876 Å are extremely rare, and their diagnostic potential remains largely unexplored. We report the first…
Unveiling Spatiotemporal Properties of the Quasi-periodic Pulsations in the Balmer Continuum at 3600 Å in an X-class Solar White-light Flare
De-Chao Song, Marie Dominique, Ivan Zimovets +11
Quasi-periodic pulsations (QPPs) in the Balmer continuum of solar white-light flares (WLFs) are rarely reported, and accurately pinpointing the spatial source of flaring QPPs remai…
New insights into the proton precipitation sites in solar flares
Andrea Francesco Battaglia, Säm Krucker
The Reuven Ramaty High Energy Solar Spectrocopy Imager (RHESSI) -ray observations of the extraordinary GOES X25 flare SOL2003-10-28T11:10 are revisited to investigate previously…
The observational evidence that all microflares that accelerate electrons to high energies are rooted in sunspots
Andrea Francesco Battaglia, Säm Krucker, Astrid M. Veronig +6
In general, large solar flares are more efficient at accelerating high-energy electrons than microflares. Nonetheless, we sometimes observe microflares that accelerate electrons to…
A Joint Microwave and Hard X-Ray Study Towards Understanding the Transport of Accelerated Electrons during an Eruptive Solar Flare
Surajit Mondal, Andrea F. Battaglia, Bin Chen +1
The standard flare model, despite its success, is limited in comprehensively explaining the various processes involving nonthermal particles. One such missing ingredient is a detai…
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…
The White-light Emissions in Two X-class Flares Observed by ASO-S and CHASE
Ying Li, Zhichen Jing, De-Chao Song +9
The white-light continuum emissions in solar flares (i.e., white-light flares) are usually observed on the solar disk but, in a few cases, off the limb. Here we present on-disk as…
A Modelling Investigation for Solar Flare X-ray Stereoscopy with Solar Orbiter/STIX and Earth Orbiting Missions
Natasha L. S. Jeffrey, Säm Krucker, Morgan Stores +9
The Spectrometer/Telescope for Imaging X-rays (STIX) on board Solar Orbiter (SolO) provides a unique opportunity to systematically perform stereoscopic X-ray observations of solar…
Efficiency of solar microflares in accelerating electrons when rooted in a sunspot
Jonas Saqri, Astrid M. Veronig, Andrea Francesco Battaglia +3
We investigate two microflares of GOES classes A9 and C1 (after background subtraction) observed by STIX onboard Solar Orbiter with exceptionally strong nonthermal emission. We com…
The existence of hot X-ray onsets in solar flares
Andrea Francesco Battaglia, Hugh Hudson, Alexander Warmuth +9
It is well known among the scientific community that solar flare activity often begins well before the main impulsive energy release. Our aim is to investigate the earliest phase o…
Multi-point study of the energy release and transport in the 28 March 2022, M4-flare using STIX, EUI, and AIA during the first Solar Orbiter nominal mission perihelion
Stefan Purkhart, Astrid M. Veronig, Ewan C. M. Dickson +6
We present a case study of an M4-class flare on 28 March 2022, near Solar Orbiter's first science perihelion (0.33 AU). Solar Orbiter was 83.5° west of the Sun-Earth line, making t…
STIX imaging I -- Concept
Paolo Massa, Gordon. J. Hurford, Anna Volpara +17
Aims. To provide a schematic mathematical description of the imaging concept of the Spectrometer/Telescope for Imaging X-rays (STIX) on board Solar Orbiter. The derived model is th…
Multi-point study of the energy release and impulsive CME dynamics in an eruptive C7 flare
J. Saqri, A. M. Veronig, E. C. M. Dickson +6
We combine observations from different vantage points to perform a detailed study of a long duration eruptive C7 class flare that occurred on 17 April 2021 and was partially occult…
The data center for the Spectrometer and Telescope for Imaging X-rays (STIX) onboard Solar Orbiter
Hualin Xiao, Shane Maloney, Säm Krucker +12
The Spectrometer and Telescope for Imaging X-rays (STIX) on board Solar Orbiter observes solar X-ray emission in the range of 4 – 150 keV and produces spectra and images of s…
Characterising fast-time variations in the hard X-ray time profiles of solar flares using Solar Orbiter's STIX
Hannah Collier, Laura A. Hayes, Andrea F. Battaglia +2
Aims: The aim of this work is to develop a method to systematically detect and characterise fast-time variations (s) in the non-thermal hard X-ray (HXR) time profiles of…
Multiple injections of energetic electrons associated with the flare/CME event on 9 October 2021
Immanuel Christopher Jebaraj, Athanasios Kouloumvakos, Nina Dresing +11
We study the solar energetic particle (SEP) event observed on 9 October 2021, by multiple spacecraft including Solar Orbiter (SolO). The event was associated with an M1.6 flare, a…
The coupling of an EUV coronal wave and ion acceleration in a Fermi-LAT behind-the-limb solar flare
Melissa Pesce-Rollins, Nicola Omodei, Sam Krucker +6
We present the Fermi-LAT observations of the behind-the-limb (BTL) flare of July 17, 2021 and the joint detection of this flare by STIX onboard Solar Orbiter. The separation betwee…