News
01.05.2024 Our session "Modern methods for the analysis of dynamical plasma processes in the solar atmosphere" has been accepted for NAM 2024 jointly with St-Andrews proposed session "Numerical approaches for understanding the Sun’s energetic atmosphere".
30.04.2024 Matthew Lennard participated in 2024 Space Weather Workshop, April 15-19, 2024 in Boulder, CO, USA and presented his work on "Understanding Plasma Flows in Solar Active Regions: a neural network based method for the recovery and analysis of coherent plasma structures in magnetically dominated environments". He also hiked to 2 km elevation in the Colorado Mountains! Well done Matt!
29.04.2024 Our paper is accepted by Astronomy and Astrophysics: Jafarzadeh, S., Schiavo, L.A.C., Fedun, V., Solanki, S.K., Stangalini, M., Calchetti, D., Verth, G., Jess, D.B., Grant, S.D.T., Ballai, I., Gafeira, R., Keys, P.H., Fleck, B., Morton, R.J., Browning, P.K., Silva, S.A., Appourchaux, T., Gandorfer, A., Gizon, L., Hirzberger, J., Kahil, F., Orozco Suarez, D., Schou, J., Strecker, H., del Toro Iniesta, J.C., Valori, G., Volkmer, R., Woch, J., Sausage, kink, and fluting MHD wave modes identified in solar magnetic pores by Solar Orbiter/PHI, arxiv
22.04.2024 Dr Samuel Skirvin joined PDG again, but now as a Research Associate. Welcome back and well done, Sam!
22.04.2024 Congratulations to Max McMurdo with his acceptance aa a PostDoc at KU Leuven. Well done Max! He will work with Tom Van Doorsselaere on SOUL project.
10.04.2024 Viktor Fedun and Gary Verth participated in XIV COLAGE 2024 conference, 08-12.2024, Monterrey, Nuevo León, Mexico and observed the total solar eclipse in the conference framework. Viktor Fedun delivered an invited talk "Vortices and their contribution to the energy transport in the solar atmosphere", authors: Viktor Fedun Suzana Silva, Gary Verth, Istvan Ballai and Erico Rempel.
10.04.2024 Viktor Fedun and Gary Verth participated in XIV COLAGE 2024 conference, 08-12.2024, Monterrey, Nuevo León, Mexico and observed the total solar eclipse in the conference framework. Viktor Fedun delivered an invited talk "Vortices and their contribution to the energy transport in the solar atmosphere", authors: Viktor Fedun Suzana Silva, Gary Verth, Istvan Ballai and Erico Rempel.
26.03.2024 Viktor Fedun and Gary Verth are visiting INPE - National Institute for Space Research, Brazil, 23.03-04.03.2024
24.03.2024 Today's Sun.
21.03.2024 Matthew Lennard presented an excellent talk “Throwing Computers at the Sun: Understanding Space Weather Using Data” at the Tapton Science Seminars. This was a fabulous opportunity to share and educate students, in years 12 and 13, on the Sun and it’s influence on space weather, and what research we do in Sheffield in the way of understanding complex solar events. It was great to see local students turning up and asking enthusiastic questions about the subject.
19.03.2024 Dr Samuel Skirvin (RA at KU Leuven, Belgium and our former PhD student) was accepted at Research Associate at ACSE department (PDG). Well done Sam!
18.03.2024 Dr Istvan Ballai visited our collaborator Dr Lena Khomenko (IAC, Spain) in the framework of the International Exchanges Royal Society grant (UK-Spain), 18-22.03.2024.
16.03.2024 Today's Sun.
14.03.2024 Our research visitor Mr Ioannis Dakanalis (final year PhD student), National Observatory of Athens, National and Kapodistrian University of Athens, Greece, presented a seminar on Swirling motions in the lower solar atmosphere: detection, statistics and profile analysis from multi-wavelength observations.
12-21.03.2024 Dr Kostas Tziotziou (Director Scientist, IAASARS, National Observatory of Athens) and PhD student Mr Ioannis Dakanalis are visiting PGD in the framework of RS IE "Solar vortex tubes and their role in driving atmospheric dynamics".
05.03.2024 Congratulations Fisal (PDG PhD student) with his first research paper in the field of Solar Physics, Asiri, F., Ballai, I., Fedun, V., Verth, G., Ruzheinikov, S., Albidah, A. B., "Slow body magnetohydrodynamic waves in solar photospheric flux tubes with density inhomogeneity", MNRAS, 529, 748–760, 2024, pdf | HTML
29.02.2024 Congratulations Matthew Lennard on his successful application to support his participation in 2024 Space Weather Workshop, April 15-19, 2024 in Boulder, CO, USA. Matt will present his work on "Understanding Plasma Flows in Solar Active Regions: a neural network based method for the recovery and analysis of coherent plasma structures in magnetically dominated environments".
21.02.2024 Today's Moon
10.01.2024 Congratulations to Dr Malcoln Druett (KU Leven) on his Lecturer position at ACSE (PDG). Well done Malcolm.
22.01.2024 Dr Victor Uche J. Nwankwo, Space, Anchor University, Nigeria, presented a seminar on VLF studies in Atmospheric Physics & Radio Wave Lab
01.01.2024 PDG Phd student Max McMurdo published a new UKSP nugget : 132. Phase mixing of propagating Alfvén waves in a single-fluid partially ionized solar plasma.
30.01.2024 Matthew Lennard presented research topics from the Plasma Dynamics Group at the Sheffield SoMaS away day.
08-12.01.2024 Suzana Silva, Gary Verth and Viktor Fedun participated in WaLSA meeting, Oslo, Norway.
10.12.2023 Viktor Fedun participated at AGU Fall Meeting, San Francisco, USA and presented the work of PDG group. Thanks, Suzana, Matt, Sergey and Luiz for the excellent posters and great research!
06.11.2023 Review paper published: Rempel, E., Chian, A. C.-L., Silva, S. S. A., Fedun, V., Verth, G., Miranda, R., Gosic, M., Lagrangian coherent structures in space plasmas, Reviews of Modern Plasma Physics, 7, 32, 2023, https://doi.org/10.1007/s41614-023-00136-1
20.10.2023 Congratulations to Dr Suzana Silva for being recognised as an outstanding postdoc during the Postdoc Appreciation Week 2023 (UoS): "For her very hard work and support towards the whole research cluster, staff members and PGR students. Despite being a new mum, Suzana always finds time to help others, to advice on academic progress of students. Her problem-solving skills are making everybody's life so much easier".
15.10.2023 Congratulations to Max McMurdo on the acceptance of his first paper: McMurdo, M., Ballai, I., Verth, G., Alharbi, A., V. Fedun, Phase mixing of propagating Alfven waves in a single-fluid partially ionized solar plasma, ApJ, 2023
07.10.2023 The new review paper (led by our collaborator Dr. Erico Rempel) is accepted for publication. Rempel, E., Chian, A. C.-L., Silva, S. S. A., Fedun, V., Verth, G., Miranda, R., Gosic, M., "Lagrangian coherent structures in space plasmas", Reviews of Modern Plasma Physics, 2023
01.10.2023 Congratulations to Lauren McClure on her first day as PhD PDG student!
26-29.08.2023 Viktor and Istvan participated in the research meeting in the framework of the Royal Society International Exchange Scheme grant, “Understanding natural hazards-driven ionospheric perturbations and ionospheric prediction of natural hazards”, 25-30.08.2023, Krakow, Poland. Collaboration with Ukrainian colleagues, Drs. Liudmyla Kozak, Alla Fedorenko and Prof. Oleg Cheremnykh.
22.08.2023 Our new paper is accepted (published on 26.08.2023) for publication: Cheremnykh, O., Fedorenko, A., Voitsekhovska, A., Selivanov, Yu., Ballai, I., Verth, G., Fedun, V., Atmospheric wave disturbances from the solar terminator according to the VLF radio stations data, Advances in Space Research, 2023. This work is supported by the Royal Society International Exchange Scheme grant, “Understanding natural hazards-driven ionospheric perturbations and ionospheric prediction of natural hazards”, PI Dr. Istvan Ballai.
22.08.2023 Congratulations to Abdulrahman (PDG former PhD student) and co-authors with ApJ paper published: Albidah, A. B., Fedun, V., Aldhafeeri, A. A., Ballai, I., Jess, D. B., Brevis, W., Higham, J., Stangalini, M., Silva, SSA., MacBride, C. D., and Verth G., The temporal and spatial evolution of MHD wave modes in sunspots, ApJ, 954, 30, 2023 HTML | pdf | arxiv
10.08.2023 Our PhD student Max McMurdo presented an invited seminar at ISEE, Nagoya, Japan. Well done, Max!
08.08.2023 Congratulations to Jack Gillam (PDG PhD student) with successful Confirmation Review meeting. Well done, Jack!
02.08.2023 PDG posters at AOGS 2023!
01.08.2023 Congratulations to Dr Yuyang Yuan (our PhD student) on his first paper "Advanced Γ Method for Small-scale Vortex Detection in the Solar Atmosphere" published in The Astrophysical Journal Supplement Series!
31.07-05.08.2023 Max McMurdo and Viktor Fedun participating in AOGS 2023. Viktor Fedun session chair: "ST04: Modelling Magnetohydrodynamic Processes in the Solar Atmosphere". Max McMurdo, oral presentation "Phase Mixing In Partially Ionised Plasmas". Posters presentations: Suzana de Souza e Almeida Silva, "Vorticity and Energy Transport in Photospheric Vortex Tubes" and Matthew Lennard, "A Neural Network Approach to Understanding the Flow Dynamics Photospheric Flux Emergence".
28.07.2023 Congratulations to Max MacMurdo on his first paper submission to ApJ! Title "Phase mixing of propagating Alfven waves in a single-fluid partially ionized solar plasma".
13-29.07.2023 Viktor Fedun visited Arun Mangalam (Indian Institute of Astrophysics), Ebenezer Chellasamy Edwin (Kodaikanal observatory) and Abhishek Kumar Srivastava (IIT BHU University, Varanasi). Invited research seminar: "Vortices in the Solar atmosphere".
08-12.07.2023 Viktor Fedun visited ISEE, Japan.
11.07.2023 Congratulations to Dr Samuel Skirvin (PDG former PhD student) and now PDRA at KU Leuven with the selection of his talk "Alfvenic waves in coronal loops arising from inclined acoustic wave drivers" as runners-up at NAM 2023!
07.07.2023 Sport at NAM 2023. Our PhD students Max and Jack represent PDG.
07.07.2023 Congratulations to Sergey Ruzheinikov (PDG PhD student) on his first oral presentation (NAM 2023). Talk title: "Numerical modelling of magnetic flux tubes interactions driven by photospheric vortex motions". Well done!
03.07.2023 Our PhD student Matthew Lennard presented an excellent talk at NAM 2023. Title: "Understanding the Complexity of Photospheric Flux Emergence with Machine Learning Techniques".
16.06.2023 Congratulations to our PhD student Yuyang Yuan on his successful viva!
12-16.06.2023 Dr Istvan Ballai participated in ISSI meeting: "The Role of Partial Ionization in the Formation, Dynamics and Stability of Solar Prominences"
01.06.2023 Our ApJ paper (accepted) is avaliable on arxiv. Albidah, A. B., Fedun, V., Aldhafeeri, A. A., Ballai, I., Jess, D. B., Brevis, W., Higham, J., Stangalini, M., Silva, SSA., MacBride, C. D., and Verth G., The temporal and spatial evolution of MHD wave modes in sunspots, ApJ, 2023
29.05.2023 Max McMurdo is presenting at Chapman AGU Conference on Advances in Understanding Alfvén Waves in the Sun and the Heliosphere, 28 May - 2 June 2023, Berlin, Germany. Below his poster and presentation by Dr Samuel Grant.
24.05.2023 Matthew Lennard participated in the "Astronomy and Space Physics” international conference, Kyiv, Ukraine, May 23 – 26, 2023, and delivered an excellent talk "Understanding the Complexity of Photospheric Flux Emergence with Machine Learning Techniques" Book of abstracts.
15.05.2023 Max McMurdo has been granted full support to attend the 16th International Solar Wind Conference will be held in Pacific Grove, California, June 12-16, 2023, at the historic Asilomar Conference Grounds. Congratulations! Also, congratulation to Matt Lennard for getting support as well!
11.05.2023 The new PDG PhD student seminar series was born! Our first speaker is Max McMurdo. Excellent presentation. Well done Max!
25.04.2023 Congratulation to Suzana and the Team with ApJL acceptance of our new paper "Novel approach to forecasting photospheric emergence of active regions", S. S. A. Silva , M. Lennard, G. Verth, I. Ballai E. L. Rempel, J. Warnecke, H. Iijima, H. Hotta, S.-H. Park, A. C. Donea, K. Kusano, and V. Fedun.
20.04.2023 Solar images taken by Viktor Fedun and Gary Verth during total solar eclipse observation, Exmouth, Australia.
19.04.2023 Our PhD student Matthew Lennard presented a talk at International Workshop on Machine Learning and Computer Vision in Heliophysics, Sofia, Bulgaria, April 19-21, 2023. Talk "Fast Feature Recovery for Flux Emergence Forecasting in the Photosphere using Neural Networks".
12.04.2023 Solar Physics Talk at Monash University (in the framework of the UK-Australia International Exchanges the Royal Society grant). Dr Gary Verth, "Decomposing the MHD wave modes of sunspot umbrae".
05.04.2023 Solar Physics Talk at Monash University (in the framework of the UK-Australia International Exchanges the Royal Society grant). Prof Viktor Fedun, "Vortical plasma motion in the solar atmosphere".
30.03.2023 Image of the Moon taken by SunbYte solar telescope.
27.03.2023 Congratulations to Yuyang Yuan! His first paper "Advanced Gamma method for small-scale vortex detection in the solar atmosphere" has been accepted for publicaton in The Astrophysical Journal Supplement Series.
19.03.2023 Solar image taken by SunbYte solar telescope.
12.03.2023 Solar image taken by SunbYte solar telescope through the light clouds (2927 × 2224 pixels).
22.02.2023 Solar Physics Talk at Monash University (in the framework of the UK-Australia International Exchanges the Royal Society grant). Dr Istvan Ballai, "A new perspective on waves in partially ionised solar plasmas”
04.02.2023 Recently published papers
Skirvin, S., Gary Verth, Gonzalez-Aviles, J., Shelyag, S., Sharma, R., Guzman, F., Ballai, I., Scullion, E., Silva, S., Fedun, V.
Small-scale solar jet formation and their associated waves and instabilities
Advances in Space Research, 71, 4, 1866-1892, 2023
Krasnoselskikh, V., Tsurutani, B., Dudok de Wit, T., Walker, S., Balikhin, M., Balat-Pichelin, M., Velli, M., Bale, S. D., Maksimovic, M., Agapitov, O., Baumjohann, W.,
Berthomier, M., Bruno, R., Cranmer, S. R., de Pontieu, B., de Sousa Meneses, D., Eastwood, J., Erdelyi, R., Ergun, R., Fedun, V., Ganushkina, N., Greco, A., Harra, L., Henri, P., Horbury, T., Hudson, H., Kasper, J., Khotyaintsev, Yu., Kretzschmar, M., Krucker, S., Kucharek, H., Langevin, Y., Lavraud, B., Lebreton, J-P., Lepri, S., Liemohn, M., Louarn, P., Moebius, E., Mozer, F., Nemecek, Z., Panasenco, O., Retino, A., Safrankova, J., Scudder, J., Servidio, S., Sorriso-Valvo, L., Souček, J., Szabo, A., Vaivads, A., Vekstein, G., Vörös, Z., Zaqarashvili, T., Zimbardo, G., Fedorov, A.,
ICARUS: in-situ studies of the solar corona beyond Parker Solar Probe and Solar Orbiter, Experimental Astronomy, 2023
09-13.01.2023 ISSI meeting, 'Waves in the Lower Solar Atmosphere at High Resolution, WaLSA', PDG participants, G. Verth, V. Fedun and M. McMurdo
08.01.2023 Recently published papers
Tziotziou, K., Scullion, E., Shelyag, S., Steiner, O., Khomenko, E., Tsiropoula, G., Canivete Cuissa, J. R., Wedemeyer, S., Kontogiannis, I.,
Yadav, N., Kitiashvili, I., Skirvin, S., Dakanalis, I., Kosovichev, A., Fedun, V., Vortex Motions in the Solar Atmosphere
Definitions, Theory, Observations, and Modelling, Space Science Reviews, 219, 1, 2023
Jess, D., Shahin, J., Keys, P., Stangalini, M., Verth, G., Grant, S. Waves in the lower solar atmosphere: the dawn of next-generation solar telescopes,
Space Science Reviews, 2022
Skirvin, S., Fedun, V., Silva, S.,Van Doorsselaere, T., Claes, N., Goossens, M., Verth, G.
The effect of linear background rotational flows on magnetoacoustic modes of a photospheric magnetic flux tube,
Monthly Notices of the Royal Astronomical Society, 518, 4, 6355-63662023
arxiv | HTML | supplementary videos
Scullion, E., Morgan, H., Lin, H., Fedun, V., Morton, R., SULIS: A coronal magnetism explorer for ESA's Voyage 2050,
Experimental Astronomy, 2022
Grant, S. D. T., Jess, D. B., Stangalini, M., Jafarzadeh, S., Fedun, V., Verth, G.,Keys, P. H., Rajaguru, S. P., Uitenbroek, H.,
Macbride, C. D., Bate, W. Gilchrist-Millar, C. A.
The Propagation of Coherent Waves Across Multiple Solar Magnetic Pores,
The Astrophysical Journal, 238, 2, 2022
02-08.01.2023 Prof Erico Rempel (ITA, Brazil) visited PDG in the framework of the Royal Society UK-Brazil International Exchanges grant: "A new approach to identifying and classifying evolving coherent flow structures in the turbulent plasma of the Sun’s photosphere"
13.12.2022 Poster presentation at AGU Fall meeting, Chicago, USA: "Numerical modelling of MHD waves excitation by photospheric vortex motions", Ruzheiikov et al., SH22G-2064
12.12.2022 Poster presentation at AGU Fall meeting, Chicago, USA: "Energy transport and vorticity in photospheric vortex tubes", Silva et al., SH12D-1478
12-16.12.2022 Viktor Fedun and Max McMurdo participated in AGU Fall meeting, Chicago, USA
28.11-08.12.2022 Viktor Fedun visited ISEE, Nagoya, Japan
01.12.2022 Sam's paper "The effect of linear background rotational flows on magnetoacoustic modes of a photospheric magnetic flux tube" has been accepted by MNRAS. Suplementary videos.
25.10.2022 Partial solar eclipse in Sheffield, taken by Viktor Fedun.
12.10.2022 The Astrophysical paper, “Comparison of exact and approximate MHD slow body mode solutions in photospheric waveguides”, Anwar A. Aldhafeeri, Gary Verth, Viktor Fedun, Matthew Lennard, and Istvan Ballai has been published.
05.10.2022 University news: Students launch new technology into space to observe the sun
30.09.2022 Mr Jack Gillam joined PDG as a PhD student.
30.09.2022 Ms Jawaher Homoud Alshehri joined PDG as a PhD student.
30.09.2022 Mr Adel Sulaiman H Alanezy joined PDG as a PhD student.
20-24.09.2022 Met with the Ukrainian Team under the Royal Society research collaboration grant, Krakow, Poland.
19-23.09.2022 Dr Suzana Silva participated in the joint Hinode-15 / IRIS-12 meeting, Prague, Czech Republic and delivered an invited talk "Formation of vortex tubes".
09.09.2022 The Astrophysical paper, “Comparison of exact and approximate MHD slow body mode solutions in photospheric waveguides”, Anwar A. Aldhafeeri, Gary Verth, Viktor Fedun, Matthew Lennard, and Istvan Ballai accepted for publication.
07.09.2022 Succesful launch of SunbYte IV under Hemera (Horizon 2020) with great support of Swedish Space Corporation (SSC), Esrange Sweden.
The link to the launch Livestream video.
06.09.2022 Congratulations to Dr Suzana Silva and Mr Matthew Lennard (PDG) - the new members of the UKSP Council !
25.08.2022 PDG seminar, Dr Rodrigo Miranda, University of Brasilia, Brazil. Talk: "Complexity of intermittent magnetic field turbulence within reconnection exhausts in the solar wind at 1 AU"
24.08.2022 Dr Suzana Silva, PDG, presented an online talk for Brazillian colleagues (Sao Paulo)
21.08.2022 Our excellent PhD student, Mr Matthew Lennard presented a public talk at Sungazing event, Sheffield, UK.
01.08.2022 PDG members Viktor Fedun, Gary Verth, Istvan Ballai, Suzana Silva and Greece collaborator Kostas Tziotziou have been awarded The Royal Society grant "Solar vortex tubes and their role in driving atmospheric"
01.05.2022 Dr Sergey Ruzheinikov started his second PhD journey in our group.
15.12.2021 Our PhD students Matthue Lennard and Samuel Skirvin at AGU, New Orleans 13-17 December 2021.
