MIST

Magnetosphere, Ionosphere and Solar-Terrestrial

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2026 MIST Council Election Results

It is our pleasure to announce the results of the latest MIST Council Election.

  • Samuel Wharton (University of Leicester) is elected for a 3 year term as a MIST Councillor
  • Jewel Abbey Relampagos (Lancaster University) is elected for a 1 year term as the MIST Student Representative

In addition, due to concerns from the community regarding the ongoing UKRI/STFC funding situation, MIST Council have also decided to charter Mark Lester (University of Leicester) as an additional councillor to inform and steer the council in matters related to this specific brief, as set out in Article 4.5 of the MIST Charter.

We would like to congratulate everyone on their new roles. The full composition of Council can be found on the MIST website (https://www.mist.ac.uk/community/mist-council). We would like to thank all the candidates for putting themselves forward and everyone who took part in the voting. We received votes from 132 people which represents a turnout of 21.5% of people registered to receive the MIST emailing list.

Finally, MIST Council would like to extend their thanks and gratitude to our outgoing members: Fiona Ball and Georgios Nicolaou. We would also like to say a special thank you to Andy Smith who was co-opted to be on MIST council while Rosie Johnson was on maternity leave, thank you for all of your hard work.

Open Letter Ready For Signatories

Protect MIST Science! Sign the MIST Community Open Letter on the STFC funding cuts!

https://sites.google.com/view/uk-mist-community-open-letter

 

Statement from MIST Council regarding the STFC Funding Situation

Statement from MIST Council regarding the STFC Funding Situation

MIST Council is deeply concerned by the ongoing STFC funding uncertainty and its impact on our community and beyond.

The current combination of prospective delayed and reduced funding, together with already volatile financial situations at universities across the UK, is placing significant strain on research groups. In some cases, institutions may be unable to support researchers through gaps between projects, increasing precarity across the community and adding significant pressure on early-career researchers.

We are concerned that continued uncertainty risks accelerating a brain drain from the UK, as skilled researchers reconsider their future in a system offering limited stability. The loss of expertise at any career stage would have lasting consequences for UK space science.

 

What is going on?

For those that are unaware of the situation, it is complex and evolving. We suggest the following sources to get up to speed on the current developments.

https://www.sciencecampaign.org.uk/analysis-and-publications/detail/what-is-happening-with-ukri-funding-and-the-stfc-cuts/

https://ras.ac.uk/news-and-press/news/proposed-budget-cuts-catastrophe-uk-astronomy

https://www.newscientist.com/article/2514481-physicists-warn-of-catastrophic-impact-from-uk-science-cuts/

 

What are we doing about it?

Behind the scenes, MIST Council is actively engaging with relevant parties to understand the scale of the challenge and to identify constructive ways forward.

  • We are seeking seasoned members of the community to join MIST Council on a task force to help develop options and represent the needs of our community. If you would like to be involved, please reach out to us via the MIST Council email (This email address is being protected from spambots. You need JavaScript enabled to view it.) by the end of this week (13th February 2026).
  • In addition to the task force, we want to provide an open forum for discussion and collective input among all members of the wider MIST community. We are exploring options and will be in touch as soon as possible with further details.
  • We believe in working together in the face of the current challenges and we are collaborating with UKSP and others to strive for a fair and positive outcome for all. We are reaching out to members of the SSAP (Solar System Advisory Panel) to explore the hosting of a community town hall meeting, like the one already being organised by the AAP (Astronomy Advisory Panel), to provide an open forum for discussion and collective input.

 

What can you do to help?

There are several open letters representing people in various career stages that have been made available to sign. We encourage you to read the relevant letter(s) and to sign them if you support them:

The Royal Astronomical Society are also urging Fellows to lobby their MPs against the cuts, and have included a template letter that can be used to do so:
https://ras.ac.uk/news-and-press/news/ras-fellows-urged-lobby-against-unprecedented-cuts

 

MIST Council will continue to advocate for transparency, stability, and funding structures that recognise both the long-term nature of our science and the people who deliver it.
We thank you for your continued support in this period of uncertainty.

 

Please contact This email address is being protected from spambots. You need JavaScript enabled to view it. if you have further suggestions.
MIST Council

Announcement of New MIST Council 2025

We are very pleased to announce the following members of the community have been elected to MIST Council:

  • Gemma Bower (University of Leicester), MIST Councillor
  • Tom Elsden (University of St Andrews), MIST Councillor
  • Cameron Patterson (Lancaster University), MIST Councillor
  • Fiona Ball (University of Southampton), Student Representative

They will begin their terms in July 2025.

We thank outgoing MIST Council members: Maria Walach, Chiara Lazzeri and Emma Woodfield. Andy Smith will remain on council a little longer as a co-opted member to cover Rosie Johnson's maternity leave.

The current composition of Council can be found on our website (https://www.mist.ac.uk/community/mist-council).

Announcement of New MIST Councillors.

We are very pleased to announce the following members of the community have been elected unopposed to MIST Council:

  • Rosie Johnson (Aberystwyth University), MIST Councillor
  • Matthew Brown (University of Birmingham), MIST Councillor
  • Chiara Lazzeri (MSSL, UCL), Student Representative

Rosie, Matthew, and Chiara will begin their terms in July. This will coincide with Jasmine Kaur Sandhu, Beatriz Sanchez-Cano, and Sophie Maguire outgoing as Councillors.

The current composition of Council can be found on our website, and this will be amended in July to reflect this announcement (https://www.mist.ac.uk/community/mist-council).

Polytropic Analysis of Large-scale Compressive Fluctuations in the Solar Wind: Fluid and Kinetic Behavior

By Ioannou Charalambos (University College London)

Large-scale compressive plasma fluctuations are a minor component of solar wind turbulence but still significantly shape the turbulent cascade. They perturb the pressure and internal energy of the plasma, and thus influence the evolution of the solar wind’s bulk properties (i.e., density, temperature) and can subject the plasma to various large-scale temperature anisotropy and beam instabilities. Observations of the solar wind show that these fluctuations are typically characterized by an anticorrelation between the plasma density and the magnitude of the magnetic field, and thus share polarization properties with slow waves. The nature of the slow modes in the solar wind with respect to the polarization properties of the plasma has been found to be in better agreement with the magnetohydrodynamic (MHD) slow mode predictions compared to that of the kinetic slow mode.

The polytropic behaviour of the plasma in compressive fluctuations may provide further insight into the nature of the slow mode, since the MHD, Chew–Goldberger–Low (CGL), and kinetic slow modes predict different proton polytropic indices (γ). Using Solar Orbiter observations, we determine the effective polytropic index of protons and electrons for two compressive fluctuations events, and compare them with the theoretical expectations of MHD, CGL, and kinetic slow modes. The first event exhibits characteristics of the MHD slow mode (γp ≈ 1.7) while the second event is more consistent with the kinetic slow mode (γp ≈ 3). We show that the Coulomb collisionality of the first event is stronger than the second event which may explain the different behaviour between the two events. Additionally, multiscale analysis shows that nature of the two events does not change significantly with scale. However, a scale dependence is observed for both events that suggests that kinetic effects become more prominent at smaller scales.

Polytropic index results for protons and electrons in the first (left) and second (right) compressive fluctuations events. R_p is the Pearson correlation coefficient. Panels (a)–(c) show the proton results and panels (d)–(f) show the electron results. Panels (a) and (d) show the parallel, panels (b) and (e) the perpendicular, and panels (c) and (f) the isotropic polytropic index results. The colour of the data points represents the time instance of the corresponding measurement in the interval. The first event shares characteristics with the MHD slow mode with an isotropic proton polytropic index of γ_p ≈ 5/3, while the second event shares characteristics with an Ion Acoustic wave with a parallel proton polytropic index of γ_(∥p) ≈ 3

See publication for details:
Ioannou, C. et al. (2025) ‘Polytropic Analysis of Large-scale Compressive Fluctuations in the Solar Wind: Fluid and Kinetic Behavior’, The Astrophysical Journal, 988(2), p. 253. Available at: https://doi.org/10.3847/1538-4357/adeb7b