39 citations · 212 across the 9 of their papers we have counts for
9 papers
Characterizing the Umbral Magnetic Knots of -Sunspots
A. A. Norton, P. J. Levens, K. J. Knizhnik +2
Delta ()-spots are active regions (ARs) in which positive and negative umbrae share a penumbra. They are known to be the source of strong flares. We introduce a new quantity, th…
First High Resolution Interferometric Observation of a Solar Prominence With ALMA
Nicolas Labrosse, Andrew S. Rodger, Krzysztof Radziszewski +7
We present the first observation of a solar prominence at GHz using the high resolution interferometric imaging of ALMA. Simultaneous observations in H from Białkaw Obs…
Modelling of Mg II lines in solar prominences
Peter James Levens, Nicolas Labrosse
Observations of the Mg II h and k lines in solar prominences with IRIS reveal a wide range of line shapes from simple non-reversed profiles to typical double-peaked reversed profil…
Comparing UV/EUV line parameters and magnetic field in a quiescent prominence with tornadoes
P. J. Levens, N. Labrosse, B. Schmieder +2
Context. Understanding the close relationship between the plasma and the magnetic field is important to describe and explain the observed complex dynamics of solar prominences. Aim…
Reconstruction of a helical prominence in 3D from IRIS spectra and images
B. Schmieder, M. Zapiór A. López Ariste, P. Levens +2
Movies of prominences obtained by space instruments e.g. the Solar Optical Telescope (SOT) aboard the {\it Hinode} satellite and the Interface Region Imaging Spectrograph (IRIS) wi…
Halpha Doppler shifts in a tornado in the solar corona
B. Schmieder, P. Mein, N. Mein +3
High resolution movies in 193 A from the Atmospheric Imaging Assembly (AIA) on the Solar Dynamic Observatory SDO show apparent rotation in the leg of a prominence observed during a…
Magnetic field in atypical prominence structures: Bubble, tornado and eruption
P. J. Levens, B. Schmieder, A. López Ariste +3
Spectropolarimetric observations of prominences have been obtained with the THEMIS telescope during four years of coordinated campaigns. Our aim is now to understand the conditions…
Structure of prominence legs: Plasma and magnetic field
P. J. Levens, B. Schmieder, N. Labrosse +1
We investigate the properties of a `solar tornado' observed on 15 July 2014, and aim to link the behaviour of the plasma to the internal magnetic field structure of the associated…
A solar tornado observed by EIS: Plasma diagnostics
Peter Levens, Nicolas Labrosse, Lyndsay Fletcher +1
The term `solar tornadoes' has been used to describe apparently rotating magnetic structures above the solar limb, as seen in high resolution images and movies from the Atmospheric…