From cutting-edge research to media appearances, the newest developments in WaLSA Team’s works are presented on this page. See Publications for our latest research articles, and Outreach for media linked to our public engagements.
The WaLSA team have published a 170 page review article in Living Reviews in Solar Physics. The article is written for early career researchers and well-established professional astronomers alike, who are interested in the physics of waves and oscillations manifesting in the lower solar atmosphere.
Using high-resolution observations and state-of-the-art numerical modelling, members of the WaLSA Team, in collaboration with other scientists, have discovered a wide spectrum of magneto-acoustic frequencies (with more than 30 eigenmodes) coexisting within a large sunspot. The research has been published in Nature Communications.
A Special Issue of the Philosophical Transactions of the Royal Society A published by the WaLSA Team, comprising a great set of 15 cutting-edge research articles from 55 unique authors spanning 34 research institutes.
Acoustic-gravity wave propagation characteristics in 3D radiation hydrodynamic simulations of the solar atmosphere
Bernhard Fleck, Mats Carlsson, Elena Khomenko, Matthias Rempel, Oskar Steiner, Vigeesh Gangadharan
Published ArticlePre-print on arXiv
On the effect of oscillatory phenomena on Stokes inversion results
Peter H. Keys, Oskar Steiner, Vigeesh Gangadharan
Published ArticlePre-print on arXiv
Influence of ambipolar and Hall effects on vorticity in 3D simulations of magneto-convection
E. Khomenko, M. Collados, N. Vitas, P. A. Gonzalez-Morales
Published ArticlePre-print on arXiv
Characterisation of shock wave signatures at millimetre wavelengths from Bifrost simulations
Henrik Eklund, Sven Wedemeyer, Ben Snow, David B. Jess, Shahin Jafarzadeh , Samuel D.T. Grant, Mats Carlsson, Mikołaj Szydlarski
Published ArticlePre-print on arXiv
A New Method for Detecting Solar Atmospheric Gravity Waves
Daniele Calchetti, Stuart M. Jefferies, Bernhard Fleck, Francesco Berrilli, and Dmitriy V. Shcherbik
Published ArticlePre-print on arXiv
On the influence of magnetic topology on the propagation of internal gravity waves in the solar atmosphere
G. Vigeesh, M. Roth, O. Steiner and B. Fleck
Published ArticlePre-print on arXiv
An overall view of temperature oscillations in the solar chromosphere with ALMA
S. Jafarzadeh, S. Wedemeyer, B. Fleck, M. Stangalini, D. B. Jess, R. J. Morton, M. Szydlarski1, V. M. J. Henriques, X. Zhu, T. Wiegelmann, J. C. Guevara Gómez, S. D. T. Grant, B. Chen, K. Reardon, and S. M. White
Published ArticlePre-print on arXiv
High-frequency oscillations in small chromospheric bright features observed with ALMA
Juan C. Guevara Gómez, Shahin Jafarzadeh, Sven Wedemeyer, Mikolaj Szydlarski, Marco Stangalini, Bernhard Fleck, Peter H. Keys
Published ArticlePre-print on arXiv
Magnetoacoustic Wave Energy Dissipation in the Atmosphere of Solar Pores
Caitlin A. Gilchrist-Millar, David B. Jess, Samuel D. T. Grant, Peter H. Keys, Christian Beck, Shahin Jafarzadeh, Julia M. Riedl, Tom Van Doorsselaere, Basilio Ruiz Cobo
Published ArticlePre-print on arXiv
The dynamics of 3-minute wavefronts and their relation to sunspot magnetic fields
Robert Sych, David B. Jess, David B., Jiangtao Su
Published ArticlePre-print on arXiv
Proper Orthogonal and Dynamic Mode Decomposition of Sunspot Data
A. B. Albidah, W. Brevis, V. Fedun, I. Ballai, D. B. Jess, M. Stangalini, J. Higham, G. Verth
Published ArticlePre-print on arXiv
Spectropolarimetric Fluctuations in a Sunspot Chromosphere
M. Stangalini, D. Baker, G. Valori, D.B. Jess, S. Jafarzadeh, M. Murabito, A.S.H. To, D.H. Brooks, I. Ermolli, F. Giorgi, C.D. MacBride
Published ArticlePre-print on arXiv
Accurately constraining velocity information from spectral imaging observations using machine learning techniques
Conor D. MacBride, David B. Jess, Samuel D. T. Grant, Elena Khomenko, Peter H. Keys, and Marco Stangalini
Published ArticlePre-print on arXiv
Transverse motions in sunspot super-penumbral fibrils
R. J. Morton, K. Mooroogen, and V. M. J. Henriques
Published ArticlePre-print on arXiv
Oscillations observed in umbra, plage, quiet-Sun and the polarity inversion line of active region 11158 using Helioseismic Magnetic Imager/Solar Dynamics Observatory data
A. A. Norton, R. B. Stutz and B. T. Welsch
Published article
The WaLSA Team has succeeded to the ground-breaking discovery of why the Sun’s magnetic waves strengthen and grow as they emerge from its surface. Such waves can help to solve the mystery of how the corona of the Sun maintains its multi-million degree temperatures. The research entitled "A chromospheric resonance cavity in a sunspot mapped with seismology" has been published in Nature Astronomy.
The WaLSA Team has been selected as an International Space Science Institute (ISSI) Team, providing a distinguished grant and facilities to hold a series of two to three one-week team meetings over a period of 2-3 years (during 2021-2023) at ISSI in Bern, Switzerland.
The Hooke Committee of The Royal Society awarded the WaLSA Team a prestigious grant to host a Theo Murphy international meeting in February 2020 at Chicheley Hall (home of the Kavli Royal Society International Centre). The meeting was also selected for publication in a dedicated issue of the Philosophical Transactions of the Royal Society A.
The WaLSA team has been awarded a generous grant from the Research Council of Norway through its Centres of Excellence scheme, project number 262622 (the Rosseland Centre for Solar Physics), to organise two 1-week meetings in Oslo, Norway, during 2019. The grant supports the team for local expenses as well as the meeting facilities.