86 citations · 620 across the 22 of their papers we have counts for
22 papers · 1 filter
Oscillatory reconnection and resonant response to wave excitation in 2D coronal null points
Konstantinos Karampelas, Tom Van Doorsselaere
Null points are magnetic field singularities, where the magnetic field strength rapidly drops to zero. In the solar atmosphere, null points are known sites of magnetic reconnection…
Spectra of standing kink waves in loops and the effects of the lower solar atmosphere
Konstantinos Karampelas, Daye Lim, Tom Van Doorsselaere +1
Understanding the effects of the lower solar atmosphere on the spectrum of standing kink oscillations of coronal loops, in both the decaying and decayless regime, is essential for…
Measurements of the solar coronal magnetic field based on coronal seismology with propagating Alfvenic waves: forward modeling
Yuhang Gao, Hui Tian, Tom Van Doorsselaere +3
Recent observations have demonstrated the capability of mapping the solar coronal magnetic field using the technique of coronal seismology based on the ubiquitous propagating Alfve…
Propagating Kink Waves in an Open Coronal Magnetic Flux Tube with Gravitational Stratification: Magnetohydrodynamic Simulation and Forward Modelling
Yuhang Gao, Tom Van Doorsselaere, Hui Tian +2
Context. In the coronal open-field regions, such as coronal holes, there are many transverse waves propagating along magnetic flux tubes, generally interpreted as kink waves. Previ…
Kelvin-Helmholtz instability and heating in oscillating loops perturbed by power-law transverse wave drivers
Konstantinos Karampelas, Tom Van Doorsselaere, Mingzhe Guo +2
Instabilities in oscillating loops are believed to be essential for dissipating the wave energy and heating the solar coronal plasma. Our aim is to study the development of the Kel…
Decayless oscillations in 3D coronal loops excited by a power-law driver
Konstantinos Karampelas, Tom Van Doorsselaere
Aims. We studied the manifestation of decayless oscillations in 3D simulations of coronal loops, driven by random motions. Methods. Using the PLUTO code, we ran magnetohydrodynamic…
Influence of the Lower Atmosphere on Wave Heating and Evaporation in Solar Coronal Loops
Mingzhe Guo, Timothy Duckenfield, Tom Van Doorsselaere +3
We model a coronal loop as a three-dimensional magnetic cylinder in a realistic solar atmosphere that extends from the chromosphere to the corona. Kink oscillations, believed ubiqu…
Cut-off of transverse waves through the solar transition region
Gabriel Pelouze, Tom Van Doorsselaere, Konstantinos Karampelas +2
Context. Transverse oscillations are ubiquitously observed in the solar corona, both in coronal loops and open magnetic flux tubes. Numerical simulations suggest that their dissipa…
Oscillatory reconnection as a plasma diagnostic in the solar corona
Konstantinos Karampelas, James A. McLaughlin, Gert J. J. Botha +1
Oscillatory reconnection is a relaxation process in magnetised plasma, with an inherent periodicity that is exclusively dependent on the properties of the background plasma. This s…
The independence of oscillatory reconnection periodicity from the initial pulse
Konstantinos Karampelas, James A. McLaughlin, Gert J. J. Botha +1
Oscillatory reconnection can manifest through the interaction between the ubiquitous MHD waves and omnipresent null points in the solar atmosphere and is characterized by an inhere…
Oscillatory Reconnection of a 2D X-point in a hot coronal plasma
Konstantinos Karampelas, James A. McLaughlin, Gert J. J. Botha +1
Oscillatory reconnection (a relaxation mechanism with periodic changes in connectivity) has been proposed as a potential physical mechanism underpinning several periodic phenomena…
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 First 3D Coronal Loop Model Heated by MHD Waves against Radiative Losses
Mijie Shi, Tom Van Doorsselaere, Mingzhe Guo +3
In the quest to solve the long-standing coronal heating problem, it has been suggested half a century ago that coronal loops could be heated by waves. Despite the accumulating obse…
Transverse loop oscillations via vortex shedding: a self oscillating process
Konstantinos Karampelas, Tom Van Doorsselaere
Identifying the underlying mechanisms behind the excitation of transverse oscillations in coronal loops is essential for their role as diagnostic tools in coronal seismology and th…
Generating transverse loop oscillations through a steady-flow driver
Konstantinos Karampelas, Tom Van Doorsselaere
In recent years, the decay-less regime of standing transverse oscillations in coronal loops has been the topic of many observational and numerical studies, focusing on their physic…
Estimating the energy dissipation {from Kelvin-Helmholtz instability induced} turbulence in oscillating coronal loops}
Andrew Hillier, Tom Van Doorsselaere, Konstantinos Karampelas
Kelvin-Helmholtz {instability induced} turbulence is one promising mechanism by which loops in the solar corona can be heated by MHD waves. In this paper we present an analytical m…
Wave heating in simulated multi-stranded coronal loops
Mingzhe Guo, Tom Van Doorsselaere, Konstantinos Karampelas +1
It has been found that the Kelvin-Helmholtz instability (KHI) induced by both transverse and torsional oscillations in coronal loops can reinforce the effects of wave heating. In t…
Amplitudes and energy fluxes of simulated decayless kink oscillations
K. Karampelas, T. Van Doorsselaere, D. J. Pascoe +2
Recent observations with the Atmospheric Imaging Assembly (AIA) instrument on the SDO spacecraft have revealed the existence of decayless coronal kink oscillations. These transvers…
Coronal loop transverse oscillations excited by different driver frequencies
Andrey Afanasyev, Konstantinos Karampelas, Tom Van Doorsselaere
We analyse transverse oscillations of a coronal loop excited by continuous monoperiodic motions of the loop footpoint at different frequencies in the presence of gravity. Using the…
Wave heating in gravitationally stratified coronal loops in the presence of resistivity and viscosity
K. Karampelas, T. Van Doorsselaere, M. Guo
In recent years, coronal loops have been the focus of studies related to the damping of different magnetohydrodynamic (MHD) surface waves and their connection with coronal seismolo…
Heating effects from driven transverse and Alfvén waves in coronal loops
Mingzhe Guo, Tom Van Doorsselaere, Kostas Karampelas +3
Recent numerical studies revealed that transverse motions of coronal loops can induce the Kelvin-Helmholtz Instability (KHI). This process could be important in coronal heating bec…
Heating by transverse waves in simulated coronal loops
K. Karampelas, T. Van Doorsselaere, P. Antolin
Recent numerical studies of oscillating flux tubes have established the significance of resonant absorption in the damping of propagating transverse oscillations in coronal loops.…