Dr. James Beattie
@astromagnetism.bsky.social
Ph.D @ourANU | @Princeton and @CITA_ICAT Research Fellow | 2022 Fulbright scholar @ucsc | Astrophysicist | Fourier transformer | 🇦🇺🇳🇿➡️🇨🇦🇺🇸
@natastron.nature.com’s cover looks amazing this month! Read more about our study on interstellar turbulence here: www.nature.com/articles/s41...
August 23, 2025 at 11:09 PM
@natastron.nature.com’s cover looks amazing this month! Read more about our study on interstellar turbulence here: www.nature.com/articles/s41...
Reposted by Dr. James Beattie
Extremely high-resolution simulations reveal that interstellar medium-type turbulence significantly deviates from classical magnetized turbulence models. @astromagnetism.bsky.social et al.: https://bit.ly/43txE8a / https://bit.ly/3GP2csr
The spectrum of magnetized turbulence in the interstellar medium - Nature Astronomy
Extremely high-resolution simulations reveal that interstellar medium-type turbulence significantly deviates from classical magnetized turbulence models.
bit.ly
May 14, 2025 at 4:49 PM
Extremely high-resolution simulations reveal that interstellar medium-type turbulence significantly deviates from classical magnetized turbulence models. @astromagnetism.bsky.social et al.: https://bit.ly/43txE8a / https://bit.ly/3GP2csr
Self-similarity!
"I love doing turbulence research because of its universality,” says Beattie. “It looks the same whether you’re looking at the plasma between galaxies, within the solar system, in a cup of coffee or in Van Gogh’s The Starry Night."
www.artsci.utoronto.ca/news/astroph...
"I love doing turbulence research because of its universality,” says Beattie. “It looks the same whether you’re looking at the plasma between galaxies, within the solar system, in a cup of coffee or in Van Gogh’s The Starry Night."
www.artsci.utoronto.ca/news/astroph...
Astrophysicists are exploring our galaxy’s magnetic turbulence in unprecedented detail using a new computer model
www.artsci.utoronto.ca
May 13, 2025 at 6:27 PM
Self-similarity!
"I love doing turbulence research because of its universality,” says Beattie. “It looks the same whether you’re looking at the plasma between galaxies, within the solar system, in a cup of coffee or in Van Gogh’s The Starry Night."
www.artsci.utoronto.ca/news/astroph...
"I love doing turbulence research because of its universality,” says Beattie. “It looks the same whether you’re looking at the plasma between galaxies, within the solar system, in a cup of coffee or in Van Gogh’s The Starry Night."
www.artsci.utoronto.ca/news/astroph...
The cascade of kinetic and magnetic energy from large to small scales in galactic-style turbulence behaves significantly different to the theoretical models that we regularly assume work.
www.nature.com/articles/s41...
Published in @natastron.nature.com
www.nature.com/articles/s41...
Published in @natastron.nature.com
May 13, 2025 at 3:11 PM
The cascade of kinetic and magnetic energy from large to small scales in galactic-style turbulence behaves significantly different to the theoretical models that we regularly assume work.
www.nature.com/articles/s41...
Published in @natastron.nature.com
www.nature.com/articles/s41...
Published in @natastron.nature.com
🔥 Hot off the press 🔥 @michaelpgrehan.bsky.social, grad student in CITA’s plasma astro group (@bartripperda.bsky.social’s group) shows that relativistic reconnection is invariant to the underlying model: ideal, resistive MHD, MD, force free electrodynamics, doesn’t matter… arxiv.org/abs/2503.20013
Comparison of magnetic diffusion and reconnection in ideal and resistive relativistic magnetohydrodynamics, ideal magnetodynamics and resistive force-free electrodynamics
High-energy astrophysical systems and compact objects are frequently modeled using ideal relativistic magnetohydrodynamic (MHD) or force-free electrodynamic (FFE) simulations, with the underlying assu...
arxiv.org
March 27, 2025 at 12:06 PM
🔥 Hot off the press 🔥 @michaelpgrehan.bsky.social, grad student in CITA’s plasma astro group (@bartripperda.bsky.social’s group) shows that relativistic reconnection is invariant to the underlying model: ideal, resistive MHD, MD, force free electrodynamics, doesn’t matter… arxiv.org/abs/2503.20013
Reposted by Dr. James Beattie
It’s depressing enough that so many people live in manufactured-reality bubbles where they could believe that universities are “factories of Maoist cadres.” Worse that one of them is an opinion columnist for the New York Times.
One columnist, a professional pundit, is living in a paranoid delusion. The other, a sociologist, is living in America.
March 15, 2025 at 4:36 PM
It’s depressing enough that so many people live in manufactured-reality bubbles where they could believe that universities are “factories of Maoist cadres.” Worse that one of them is an opinion columnist for the New York Times.
Click to expand!
Growing magnetized Kelvin Helmholtz instabilities
March 14, 2025 at 1:21 PM
Click to expand!
Growing magnetized Kelvin Helmholtz instabilities
March 13, 2025 at 8:09 PM
Growing magnetized Kelvin Helmholtz instabilities
Unbelievable.
Just got an email from the Fulbright Association. As of right now, funding has been cut off to 12,500 US citizens currently abroad and and more than 7,400 foreigner scholars and students in the United States
March 8, 2025 at 6:38 PM
Unbelievable.
This is crazy. As someone who was a FBer operating on a very tight FB budget, this would have been terminal. FB enabled me to connect with the people that offered me a job for my current position.
It’s so sad seeing much of what has made the US a leader in the research be forcefully deleted.
It’s so sad seeing much of what has made the US a leader in the research be forcefully deleted.
Many Fulbright scholars say they feel stranded after the Trump administration suspended their funding
Many Fulbright scholars say they feel stranded after the Trump administration suspended their funding
Fulbright scholars were among those in programs administered through the U.S. State Department who learned their funding has been frozen.
woub.org
March 8, 2025 at 6:30 PM
This is crazy. As someone who was a FBer operating on a very tight FB budget, this would have been terminal. FB enabled me to connect with the people that offered me a job for my current position.
It’s so sad seeing much of what has made the US a leader in the research be forcefully deleted.
It’s so sad seeing much of what has made the US a leader in the research be forcefully deleted.
Reposted by Dr. James Beattie
Donald Trump's America is about getting what you want… if you’ve got billions to spend:
Citizenship, for a few million.
A tax cut for your corporation, if you've given a few million.
Even U.S. military protection, if you’ll give up mineral rights worth a few billion.
Anything for a buck.
Citizenship, for a few million.
A tax cut for your corporation, if you've given a few million.
Even U.S. military protection, if you’ll give up mineral rights worth a few billion.
Anything for a buck.
February 26, 2025 at 1:23 PM
Donald Trump's America is about getting what you want… if you’ve got billions to spend:
Citizenship, for a few million.
A tax cut for your corporation, if you've given a few million.
Even U.S. military protection, if you’ll give up mineral rights worth a few billion.
Anything for a buck.
Citizenship, for a few million.
A tax cut for your corporation, if you've given a few million.
Even U.S. military protection, if you’ll give up mineral rights worth a few billion.
Anything for a buck.
My first poster since 2017… dynamos in merging neutron stars in NY this week 🤩🤩🤩
February 26, 2025 at 2:16 AM
My first poster since 2017… dynamos in merging neutron stars in NY this week 🤩🤩🤩
Just ctrl+f’d \nabla in my latest work… 289 \nablas… that has got to be a record of some kind.
February 22, 2025 at 5:19 PM
Just ctrl+f’d \nabla in my latest work… 289 \nablas… that has got to be a record of some kind.
Last week we submitted a study to ApJL confronting the predictions from weakly compressible MHD theory with extremely high Re simulations and in situ measurements of Earth’s high beta magnetosheath, showing agreement between theory, simulation and observations. arxiv.org/abs/2502.08883
February 20, 2025 at 3:03 PM
Last week we submitted a study to ApJL confronting the predictions from weakly compressible MHD theory with extremely high Re simulations and in situ measurements of Earth’s high beta magnetosheath, showing agreement between theory, simulation and observations. arxiv.org/abs/2502.08883
Political commentary… we’re saturated 🙅♂️🙅♂️🙅♂️. Turbulence commentary, ✅✅✅: I provided some comments to CNN on some latest advances using tensor networks to model high dimension PDFs in the context of turbulent mixing, check out the article edition.cnn.com/2025/02/06/s...
Scientists make ‘rare advance’ in tackling the oldest unsolved problem in physics | CNN
Physicists have long tried to model the chaotic phenomenon of turbulence. Now, a team has pioneered a new quantum computing-inspired approach.
edition.cnn.com
February 7, 2025 at 3:42 PM
Political commentary… we’re saturated 🙅♂️🙅♂️🙅♂️. Turbulence commentary, ✅✅✅: I provided some comments to CNN on some latest advances using tensor networks to model high dimension PDFs in the context of turbulent mixing, check out the article edition.cnn.com/2025/02/06/s...
Vegemite on pan-fried toast with truffle cheddar cheese. Bold flavours. Truffle upfront with long lasting Vegemite tail. Truffle reenergises Vegemite, bringing out the natural flavours of vitamin B. 8/10.
January 29, 2025 at 2:54 PM
Vegemite on pan-fried toast with truffle cheddar cheese. Bold flavours. Truffle upfront with long lasting Vegemite tail. Truffle reenergises Vegemite, bringing out the natural flavours of vitamin B. 8/10.
One of my colleagues put it nicely — “obviously, pointing out that the Power Law in The Sky is not all Kolmogorov is a big result”
New study in preprint. In this study we test if supernova-driven turbulence, a large component of the turbulence in our Galaxy, resembles classical Kolmogorov-style turbulence, as it is regularly assumed. It does not.
arxiv.org/abs/2501.09855
arxiv.org/abs/2501.09855
So long Kolmogorov: the forward and backward turbulence cascades in a supernovae-driven, multiphase interstellar medium
The interstellar medium (ISM) of disk galaxies is turbulent, and yet the fundamental nature of ISM turbulence, the energy cascade, is not understood in detail. In this study, we use high-resolution si...
arxiv.org
January 23, 2025 at 2:13 AM
One of my colleagues put it nicely — “obviously, pointing out that the Power Law in The Sky is not all Kolmogorov is a big result”
Quite amazing — Cassiopeia A lights up the surrounding ISM with an expanding shell of light. This is not a projection of diffuse ISM, but a 2D slice in 3D. It is volumetric structure.
www.youtube.com/watch?v=jfmX...
www.youtube.com/watch?v=jfmX...
Cassiopeia A Light Echoes Time-lapse
YouTube video by Space Telescope Science Institute
www.youtube.com
January 21, 2025 at 1:15 AM
Quite amazing — Cassiopeia A lights up the surrounding ISM with an expanding shell of light. This is not a projection of diffuse ISM, but a 2D slice in 3D. It is volumetric structure.
www.youtube.com/watch?v=jfmX...
www.youtube.com/watch?v=jfmX...
New study in preprint. In this study we test if supernova-driven turbulence, a large component of the turbulence in our Galaxy, resembles classical Kolmogorov-style turbulence, as it is regularly assumed. It does not.
arxiv.org/abs/2501.09855
arxiv.org/abs/2501.09855
So long Kolmogorov: the forward and backward turbulence cascades in a supernovae-driven, multiphase interstellar medium
The interstellar medium (ISM) of disk galaxies is turbulent, and yet the fundamental nature of ISM turbulence, the energy cascade, is not understood in detail. In this study, we use high-resolution si...
arxiv.org
January 20, 2025 at 1:56 PM
New study in preprint. In this study we test if supernova-driven turbulence, a large component of the turbulence in our Galaxy, resembles classical Kolmogorov-style turbulence, as it is regularly assumed. It does not.
arxiv.org/abs/2501.09855
arxiv.org/abs/2501.09855
🙌🙌🙌🙌
Star gutz + turbulence + magnetic fields = 🥹🥹🥹
January 17, 2025 at 11:20 PM
🙌🙌🙌🙌
Anyone else completely left their \mathbf{…} era for \bm{…}?
January 17, 2025 at 5:46 PM
Anyone else completely left their \mathbf{…} era for \bm{…}?
Mmmm hmmmm ☕️☕️
January 14, 2025 at 2:33 PM
Mmmm hmmmm ☕️☕️
💯💯💯
December 29, 2024 at 6:28 AM
💯💯💯
Reposted by Dr. James Beattie
Surely with the possibility of limitless cheap solar there is a business case for major GPU clusters in Australia
December 29, 2024 at 12:28 AM
Surely with the possibility of limitless cheap solar there is a business case for major GPU clusters in Australia
The sweetest girl. Merry Christmas everyone!
December 26, 2024 at 8:14 AM
The sweetest girl. Merry Christmas everyone!