105 citations · 463 across the 24 of their papers we have counts for
24 papers
Energetics and Emission in a Simulated Solar Flare Initialised by a Non-Force Free Magnetic Field
W. Bate, M. Gordovskyy, A. Prasad +7
Solar flare simulations are commonly initialised using non-linear force free field (NLFF) extrapolations derived from photospheric vector magnetograms. However, the force free assu…
Quasi-Periodic Pulsations Driven by Structural Oscillations in a Kink-Unstable Flaring Coronal Loop
James Stewart, Philippa K. Browning, Mykola Gordovskyy
Twisted coronal loops in the solar atmosphere may become kink-unstable when their magnetic field lines are sufficiently twisted. This instability can trigger magnetic reconnection,…
Modeling the effects of a lightbridge on oscillations in a solar pore
Luiz A. C. A. Schiavo, Mykola Gordovskyy, Philippa K. Browning +7
Solar pores are ideal magnetic structures for wave propagation and transport of energy radially-outwards across the upper layers of the solar atmosphere. We aim to model the excita…
An Anisotropic Density Turbulence Model from the Sun to 1 au Derived From Radio Observations
Eduard P. Kontar, A. Gordon Emslie, Daniel L. Clarkson +5
Solar radio bursts are strongly affected by radio-wave scattering on density inhomogeneities, changing their observed time characteristics, sizes, and positions. The same turbulenc…
Helicity-conserving relaxation in unstable and merging magnetic flux ropes
Philippa Browning, Mykola Gordovskyy, Alan Hood
Twisted magnetic flux ropes are reservoirs of free magnetic energy. In a highly-conducting plasma such as the solar corona, energy release through multiple magnetic reconnections c…
Particle acceleration and their escape into the heliosphere in solar flares with open magnetic field
Mykola Gordovskyy, Philippa K. Browning, Kanya Kusano +2
Energetic particle populations in the solar corona and in the heliosphere appear to have different characteristics even when produced in the same solar flare. It is not clear what…
Solar Radio Spikes and Type IIIb Striae Manifestations of Sub-second Electron Acceleration Triggered by a Coronal Mass Ejection
Daniel L. Clarkson, Eduard P. Kontar, Nicole Vilmer +3
Understanding electron acceleration associated with magnetic energy release at sub-second scales presents a major challenges in solar physics. Solar radio spikes observed as sub-se…
Oscillatory reconnection and waves driven by merging magnetic flux ropes in solar flares
J. Stewart, P. K. Browning, M. Gordovskyy
Oscillatory reconnection is a process that has been suggested to underlie several solar and stellar phenomena, and is likely to play an important role in transient events such as f…
Pulsations of microwave emission from a solar flare in a twisted loop caused by intrinsic MHD oscillations
C. Smith, M. Gordovskyy, P. K. Browning
We present results revealing microwave pulsations produced in a model of a flaring twisted solar coronal loop, without any external oscillatory driver. Two types of oscillations ar…
Sizes and shapes of sources in solar metric radio bursts
M. Gordovskyy, E. P. Kontar, D. L. Clarkson +2
Metric and decametric radio-emissions from the Sun are the only direct source of information about the dynamics of non-thermal electrons in the upper corona. In addition, the combi…
First Frequency-Time-Resolved Imaging Spectroscopy Observations of Solar Radio Spikes
Daniel L. Clarkson, Eduard P. Kontar, Mykola Gordovskyy +2
Solar radio spikes are short duration and narrow bandwidth fine structures in dynamic spectra observed from GHz to tens of MHz range. Their very short duration and narrow frequency…
Sub-second time evolution of Type III solar radio burst sources at fundamental and harmonic frequencies
Xingyao Chen, Eduard P. Kontar, Nicolina Chrysaphi +4
Recent developments in astronomical radio telescopes opened new opportunities in imaging and spectroscopy of solar radio bursts at sub-second timescales. Imaging in narrow frequenc…
Forward modelling of particle acceleration and transport in an individual solar flare
Mykola Gordovskyy, Philippa K. Browning, Satoshi Inoue +3
The aim of this study is to generate maps of the hard X-ray emission produced by energetic electrons in a solar flare and compare them with observations. The ultimate goal is to te…
Predicting the time variation of radio emission from MHD simulations of a flaring T-Tauri star
C. O. G. Waterfall, P. K. Browning, G. A. Fuller +3
We model the time dependent radio emission from a disk accretion event in a T-Tauri star using 3D, ideal magnetohydrodynamic simulations combined with a gyrosynchrotron emission an…
Using the Stokes V widths of Fe I lines for diagnostics of the intrinsic solar photospheric magnetic field
M. Gordovskyy, S. Shelyag, P. K. Browning +1
The goal of this study is to explore a novel method for the solar photospheric magnetic field diagnostics using Stokes V widths of different magnetosensitive Fe~I spectral lines. W…
Anisotropic Radio-Wave Scattering and the Interpretation of Solar Radio Emission Observations
Eduard P. Kontar, Xingyao Chen, Nicolina Chrysaphi +6
The observed properties (i.e., source size, source position, time duration, decay time) of solar radio emission produced through plasma processes near the local plasma frequency, a…
Forced magnetic reconnection and plasmoid coalescence: I - MHD Simulations
Max Potter, Philippa Browning, Mykola Gordovskyy
Forced magnetic reconnection, a reconnection event triggered by external perturbation, should be ubiquitous in the solar corona. Energy released during such cases can be much great…
Combining MHD and kinetic modelling of solar flares
M. Gordovskyy, P. K. Browning, R. F. Pinto
Solar flares are explosive events in the solar corona, representing fast conversion of magnetic energy into thermal and kinetic energy, and hence radiation, due to magnetic reconne…
Polarisation of microwave emission from reconnecting twisted coronal loops
Mykola Gordovskyy, Philippa Browning, Eduard Kontar
Magnetic reconnection and particle acceleration due to the kink instability in twisted coronal loops can be a viable scenario for confined solar flares. Detailed investigation of t…
Reduced drift-kinetics with thermal velocity distribution across magnetic field
Mykola Gordovskyy, Philippa Browning
The goal of this study is to develop an approximate self-consistent description of particle motion in strongly magnetised solar corona. We derive a set of reduced drift-kinetic equ…
Plasma motions and non-thermal line broadening in flaring twisted coronal loops
Mykola Gordovskyy, Eduard Kontar, Philippa Browning
Observation of coronal EUV spectral lines sensitive to different temperatures offers an opportunity to evaluate the thermal structure and flows in flaring atmospheres. This can be…
Effect of collisions and magnetic convergence on electron acceleration and transport in reconnecting twisted solar flare loops
M. Gordovskyy, P. K. Browning, E. P. Kontar +1
We study a model of particle acceleration coupled with an MHD model of magnetic reconnection in unstable twisted coronal loops. The kink instability leads to the formation of helic…
Particle acceleration and transport in reconnecting twisted loops in a stratified atmosphere
Mykola Gordovskyy, Philippa Browning, Eduard Kontar +1
Twisted coronal loops should be ubiquitous in the solar corona. Twisted magnetic fields contain excess magnetic energy, which can be released during magnetic reconnection, causing…
Observations of Unresolved Photospheric Magnetic Fields in Solar Flares Using Fe I and Cr I Lines
Mykola Gordovskyy, Vsevolod G. Lozitsky
The structure of the photospheric magnetic field during solar flares is examined using echelle spectropolarimetric observations. The study is based on several Fe I and Cr I lines o…