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Associate Professor

Photo of Associate Professor Jonathan Squire.

Location
Room 417
Phone numbers
9007 (Office)
64 3 479 9007 (Office Direct Dial)
Email
jonathan.squire@otago.ac.nz
Research Group
https://apf.physics.otago.ac.nz

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Biography

I carried out my undergraduate studies in physics at the University of Otago before going to Princeton University to join the PhD programme in plasma physics in 2010. After graduating in 2015, I was a postdoctoral fellow in the astronomy department at Caltech, then joined the Otago physics department as a research fellow in late 2018.

My research covers the broad area of astrophysical and geophysical fluid and plasma dynamics. I am most interested in the theory of the basic physics that governs fluids and plasmas: instabilities, turbulence, the generation of magnetic fields, and the behaviour of collisionless plasmas. Such processes control a wide variety of astrophysical and geophysical systems, including the Earth's magnetic field, planet formation in accretion disks, the solar wind and solar cycle, galaxy clusters, and the magnetization of the entire universe. My work involves a mix of analytic theory and large computer simulations, and I keep up a keen interest in developing robust numerical algorithms that allow us to better understand the complex multi-scale physics of plasmas and fluids.

Publications

Meyrand, R., Squire, J., Mallet, A., & Chandran, B. D. G. (2025). Reflection-driven turbulence in the super-Alfvénic solar wind. Journal of Plasma Physics, 91, e29. doi: 10.1017/s0022377824001181 Journal - Research Article

Zhang, M. F., Kunz, M. W., Squire, J., & Klein, K. G. (2025). Extreme heating of minor ions in imbalanced solar-wind turbulence. Astrophysical Journal, 979, 121. doi: 10.3847/1538-4357/ad95fc Journal - Research Article

Chandran, B. D. G., Bale, S. D., David, V., Halekas, J. S., Klein, K. G., Kunz, M. W., Meyrand, R., … Squire, J., … Zhang, M. (2024). Using PSP observations to improve solar-wind models through improved treatments of turbulence and ion heating. Proceedings of the American Geophysical Union (AGU) Annual Meeting: What's Next For Science. SH11B-06. [Abstract] Conference Contribution - Published proceedings: Abstract

Wyper, P. F., Pariat, E., Squire, J., Touresse, J., & Matteini, L. (2024). Switchback generation from the evolution of Torsional Alfvén waves. Proceedings of the American Geophysical Union (AGU) Annual Meeting: What's Next For Science. SH24A-01. [Abstract] Conference Contribution - Published proceedings: Abstract

Bale, S. D., Matteini, L., Squire, J., Badman, S. T., Bowen, T., Chandran, B. D. G., … Mallet, A. (2024). An Alfvén wave dynamo generates magnetic field in the solar wind. Proceedings of the American Geophysical Union (AGU) Annual Meeting: What's Next For Science. SH12A-05. [Abstract] Conference Contribution - Published proceedings: Abstract

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