Florian Koller
flokoller.bsky.social
Florian Koller
@flokoller.bsky.social
Space scientist @Queen Mary University of London
Reposted by Florian Koller
New paper in @physrevx.bsky.social from Jack McIntyre @qmspaceplasma.bsky.social, providing evidence from #ParkerSolarProbe for the existence of the helicity barrier in the solar wind, which may alter how turbulence heats space and astrophysical plasmas journals.aps.org/prx/abstract...
Evidence for the Helicity Barrier from Measurements of the Turbulence Transition Range in the Solar Wind
Data from NASA's Parker Solar Probe reveal that a barrier to the transfer of energy often forms in the solar wind, limiting energy reaching small scales and helping explain why solar wind protons are ...
journals.aps.org
July 8, 2025 at 11:45 PM
Reposted by Florian Koller
My latest paper, regarding magnetosheath jet formation associated with a solar wind rotational discontinuity, is now published!

agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Magnetosheath Jets Associated With a Solar Wind Rotational Discontinuity in a Hybrid‐Vlasov Simulation
We conduct a 2D hybrid-Vlasov simulation of the interaction between Earth's bow shock and a solar wind rotational discontinuity Magnetosheath jets that form during the shock-discontinuity interac...
agupubs.onlinelibrary.wiley.com
June 10, 2025 at 6:29 AM
I'm excited to share that I was awarded the the Marie Skłodowska-Curie Postdoctoral Fellowship! Starting this October, I will work on plasma shocks in the heliosphere at QMUL. Looking forward to new endeavors!
June 3, 2025 at 11:28 AM
Reposted by Florian Koller
Shiladittya Mondal presents his work on near-Sun electron scale turbulence at the Parker Four conference
May 8, 2025 at 3:32 PM
Had a fun #EGU25 and lots of discussions at my poster in the collisionless shock session. Always a delight to meet my international #heliopysics colleagues and friends!
May 3, 2025 at 2:30 PM
Reposted by Florian Koller
Happy to report that my talk went well! #EGU25
April 29, 2025 at 2:41 PM
Reposted by Florian Koller
Our collisionless shocks session at #EGU25 drew a great crowd, sparked insightful discussions and set the stage for new #heliophysics collaborations. Thanks to everyone that attended!
May 1, 2025 at 9:52 AM
Reposted by Florian Koller
Jets were recently found at Mars, and we made a statistical study, using data from the Maven spacecraft, to find out more about them. You may read the paper here: doi.org/10.1051/0004...
April 9, 2025 at 2:43 PM
Reposted by Florian Koller
A postdoc position is available to join my UKRI #UKRIFLF project. Deadline 20 April 2025, start date flexible but available immediately. Enquiries welcome. More info and application: qmul-jobs.tal.net/vx/mobile-0/...
March 18, 2025 at 2:36 PM
Reposted by Florian Koller
New paper from Pauline Simon, published in Physical Review E, on how pressure anisotropy affects turbulent cascade rates, studied through numerical simulations journals.aps.org/pre/abstract...
Impact of pressure anisotropy on the cascade rate of Hall magnetohydrodynamic turbulence with biadiabatic ions
The impact of ion pressure anisotropy on the energy cascade rate of Hall-MHD turbulence with biadiabatic ions and isothermal electrons is evaluated in three-dimensional direct numerical simulations, u...
journals.aps.org
January 30, 2025 at 2:10 PM
Reposted by Florian Koller
Our review paper on downstream jets is out! We summarize findings from 100s of articles on how jets form at collisionless shocks, their role in planetary systems, and their space weather effects. Many questions remain to explore! Read it here: link.springer.com/article/10.1...

#Heliophysics #Space
Jets Downstream of Collisionless Shocks: Recent Discoveries and Challenges - Space Science Reviews
Plasma flows with enhanced dynamic pressure, known as magnetosheath jets, are often found downstream of collisionless shocks. As they propagate through the magnetosheath, they interact with the surrou...
link.springer.com
December 28, 2024 at 1:21 AM