9 citations · 27 across the 25 of their papers we have counts for
25 papers
Solar, Heliospheric and Ionospheric Physics: Pathfinders, Precursors and SKAO Perspective
Pietro Zucca, Rohit Sharma, Divya Oberoi +5
The Solar, Heliospheric and Ionospheric (SHI) Physics Science Working Group of the Square Kilometre Array Observatory (SKAO) addresses the full chain of plasma processes linking th…
The SKA as a Probe of Heliospheric Turbulence and Radio-wave Propagation Effects
Nicolina Chrysaphi, Eduard P. Kontar, Hamish A. S. Reid +3
Density turbulence in the heliosphere can impact traversing radio photons originating from anywhere in the universe, leading to distortions of both the spectroscopic and imaging pr…
Unravelling the nonthermal emissions from the quiet solar corona with the SKA
Surajit Mondal, Divya Oberoi, Rohit Sharma +4
Investigation of the nonthermal emissions from the quiet solar corona has been rather limited. This primarily stems from the fact that the emission is expected to be quite weak and…
Radio Wave Propagation as a Probe of the Solar Corona and Solar Wind
K. Sasikumar Raja, Prasad Subramanian, Susanta Kumar Bisoi +3
Radio waves propagating through an inhomogeneous, turbulent medium such as the solar corona and solar wind become distorted, causing the initially plane wavefronts becomes corrugat…
Radio Diagnostics of Particle Acceleration in Solar Flares with SKAO Observations
Rohit Sharma, Marina Battaglia, Sijie Yu +3
Particle acceleration is a fundamental astrophysical process occurring across diverse systems and scales, producing electromagnetic emission across all wavelengths. Radio bursts fr…
Solar Radio Burst Fine Structures
Eduard Kontar, Daniel Clarkson, Hamish Reid +5
Solar radio bursts exhibit intricate variability in time, space, and frequency, often displaying a rich variety of fine frequency-time structures such as spikes, drift pairs, stria…
Imaging spectroscopy reveals spike-like repeating radio burst pairs in the solar corona
Suli Ma, Eduard P. Kontar, Daniel L. Clarkson +2
Solar radio bursts exhibit complex fine structures that reveal intricate coronal plasma dynamics. Here, we report detection of spike-like repeating burst pairs, characterized by tw…
Frequency-time-resolved Imaging Spectroscopy of Fine Structures in a Solar Radio Noise Storm
Daniel L. Clarkson, Eduard P. Kontar
Solar radio noise storms are common phenomena, composed of broadband continuum emission embedded with diverse fine structures, yet their unusually compact apparent sizes remain une…
Energy Transport and Heating by Non-Thermal Electrons in a Turbulent Solar Flare Environment
A. Gordon Emslie, Eduard P. Kontar
The impulsive phase of a solar flare is known to generate strong turbulence and to transfer magnetic energy into accelerated electrons. Recognizing the importance of angular diffus…
Constraining turbulent solar flare acceleration regions by connecting kinetic modeling and X-ray observations
Morgan Stores, Natasha Jeffrey, Ewan Dickson +2
Spatially-resolved X-ray observations are the key to understanding electron acceleration in solar flares. Currently, the underlying processes that efficiently energize solar flare…
Solar energetic particles and their association with radio emissions
Diana E. Morosan, Anshu Kumari, Immanuel Jebaraj +6
Energetic particle populations are ubiquitous throughout the Universe. In our solar system, the most prominent sources of energetic particles are solar flares or collisionless shoc…
Probing the Solar Corona and the Solar Wind Using Angular Broadening Observations with the SKA
Peijin Zhang, John Morgan, Divya Oberoi +9
Angular broadening observations of compact radio sources provide a powerful method for probing the solar corona and solar wind. Such observations enable studies of the phase struct…
First Detailed MeerKAT Imaging Spectroscopy of a Solar Flare
Yingjie Luo, Eduard P. Kontar, Roelf Du Toit Strauss +5
Radio observations provide powerful diagnostics of energy release, particle acceleration, and transport processes in solar flares. However, despite recent progress in radio interfe…
Signatures of Large-Scale Magnetic Field Disturbances and Switchbacks in Interplanetary Type III Radio Bursts
Daniel L. Clarkson, Eduard P. Kontar
Type III solar radio bursts are driven by non-thermal electron beams travelling along heliospheric magnetic fields, with the radio emission frequency drift-rate determined by the b…
Energy-Containing Electrons in Solar Flares: Improving Hard X-Ray and EUV Diagnostics
Yingjie Luo, Eduard P. Kontar, Debesh Bhattacharjee
Solar flares effectively accelerate particles to non-thermal energies. These accelerated electrons are responsible for energy transport and subsequent emissions in HXR, radio, and…
Ion-scale Turbulence and Energy Cascade Rate in the Solar Corona and Inner Heliosphere
Eduard P. Kontar, A. Gordon Emslie, Daniel L. Clarkson +1
Plasma turbulence cascading from MHD to kinetic scales in the heliospheric plasma is believed to play a key role in coronal heating and fast solar wind acceleration, but the proper…
Total Power and Low-energy Cut-off Time Evolution of Solar Flare Accelerated Electrons Using X-Ray Observations and Warm-Target Model
Debesh Bhattacharjee, Eduard P. Kontar, Yingjie Luo
A primary characteristic of solar flares is the efficient acceleration of electrons to nonthermal deka-keV energies. While hard X-Ray (HXR) observation of bremsstrahlung emission s…
A Multispacecraft Analysis and Modeling of Type III Radio Burst Exciter Deceleration in Inhomogeneous Heliospheric Plasma
Francesco Azzollini, Eduard P. Kontar
Electron beams accelerated in solar flares and escaping from the Sun along open magnetic field lines can trigger intense radio emissions known as type III solar radio bursts. Utili…
Tracing the Heliospheric Magnetic Field via Anisotropic Radio-Wave Scattering
Daniel L. Clarkson, Eduard P. Kontar, Nicolina Chrysaphi +4
Astrophysical radio sources are embedded in turbulent magnetised environments. In the 1 MHz sky, solar radio bursts are the brightest sources, produced by electrons travelling alon…
Magnetic Field Geometry and Anisotropic Scattering Effects on Solar Radio Burst Observations
Daniel L. Clarkson, Eduard P. Kontar
The fine structures of solar radio bursts reveal complex dynamics in the corona, yet the observed characteristics of these sub-second bursts are additionally complicated by radio w…
Temporally resolved Type III solar radio bursts in the frequency range 3-13 MHz
Antonio Vecchio, Milan Maksimovic, Nicolina Chrysaphi +2
Radio observations from space allow to characterize solar radio bursts below the ionospheric cutoff, which are otherwise inaccessible, but suffer from low, insufficient temporal re…
Advection-nonlinear-diffusion model of flare accelerated electron transport in Type III solar radio bursts
Eduard P. Kontar, Francesco Azzollini, Olena Lyubchyk
Electrons accelerated by solar flares and observed as type III solar radio bursts are not only a crucial diagnostic tool for understanding electron transport in the inner heliosphe…
The UK Submillimetre and Millimetre Astronomy Roadmap 2024
K. Pattle, P. S. Barry, A. W. Blain +31
In this Roadmap, we present a vision for the future of submillimetre and millimetre astronomy in the United Kingdom over the next decade and beyond. This Roadmap has been developed…
First determination of the angular dependence of rise and decay times of solar radio bursts using multi-spacecraft observations
Nicolina Chrysaphi, Milan Maksimovic, Eduard P. Kontar +3
Radio photons interact with anisotropic density fluctuations in the heliosphere, which can alter their trajectory and influence properties deduced from observations. This is partic…