News

31.06-04.07.2024  Dr Alina Donea from Monash University (Melbourne, Australia ) is visiting PDG.

23-28.06.2024 Viktor Fedun participates in AOGS conference, Pyeongchang, Gangwon-do, South Korea. Session Chair, ST17 Observing and Simulating Plasma Dynamics in the Solar Atmosphere and presenting: 

ST17-A010, Adel Sulaiman H. Alanezy, Istvan Ballai, Gary Verth, Viktor Fedun, Kartika Sangal, Abhishek Srivastava "Phase Mixed Alfven Waves in Partially Ionised Solar Plasmas". 

ST12-A022, Max McMurdo, Istvan Ballai, Gary Verth, Viktor Fedun, "Waves and Oscillations in Faint Coronal Hole Loops".

14.06.2024 Congratulations to Suzana and Sam on the acceptance of their session proposal in the framework of AGU annual meeting taking place from 9 - 13 December 2024 in Washington, D.C., USA! SH026 - "Plasma dynamics of the lower solar atmosphere"

13.06.2024 Congratulations to Suzana and Viktor on the acceptance of their ISSI proposal! No 24-607 "Opening new avenues in identifying coherent structures and transport barriers in the magnetised solar plasma". 

13.06.2024   Well done to SunbYte! Our paper "SunbYte: A framework for low-cost robotic solar telescopes on high altitude balloons" has been accepted by Experimental Astronomy" is published in Experimental Astronomy.  57, 27, 2024, HTML

31.05.2023  Congratulations to our PhD student Fisal Asiri on his successful viva! 

23-31.05.2024   Viktor Fedun and Suzana Silva visited colleagues at the National Observatory of Athens (NOA) in the framework of The Royal Society International Exchanges programme, project "Solar vortex tubes and their role in driving atmospheric dynamics".

13-17.05.2024   Viktor Fedun participated in ISSI meeting organised by the US colleagues Ben Tremblay and Masha Kazachenko "Tracking Plasma Flows in the Sun’s Photosphere and Chromosphere: A Review & Community Guide"

11.05.2024   Matthew Lennard took this beautiful image of the Aurora!

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".

01.05.2024   Plasma Dynamics Group photo 2024

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   Congratulations Suzana with an excellent paper! Silva, S. S. A., Verth, G., Rempel, E., Ballai, I., Jafarzadeh, S., Fedun, V., Magnetohydrodynamic Poynting Flux Vortices in the Solar Atmosphere and Their Role in Concentrating Energy, ApJ, 963, 10, 2024, pdf | HTML

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!

14.11.2023  Congratulations to Max McMurdo with his first paper published! McMurdo, M., Ballai, I., Verth, G., Alharbi, A., V. Fedun, Phase mixing of propagating Alfven waves in a single-fluid partially ionized solar plasmaApJ, 958, 81, 2023, HTML | pdf | arxiv

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!

01.07.2023  SunrIde launched Karman Alpha! Congratulations! More details here.

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 arxivAlbidah, 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

arxiv | HTML 

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

HTML

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

HTML | pdf


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

pdf


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

HTML | pdf


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

arxiv | PDF 

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

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.

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.