#toroidal field

[reality-detective]

The Toroidal Field ✨

[wayti-blog]

Protostellar discs fed by dense collapsing gravomagneto sheetlets

ABSTRACT. Stars form from the gravitational collapse of turbulent, magnetized molecular cloud cores. Our non-ideal MHD simulations reveal th

"ABSTRACT:"

"Stars form from the gravitational collapse of turbulent, magnetized molecular cloud cores. Our non-ideal MHD simulations reveal that the intrinsically anisotropic magnetic resistance to gravity during the core collapse naturally generates dense gravomagneto sheetlets within inner protostellar envelopes – disrupted versions of classical sheet-like pseudo-discs. They are embedded in a magnetically dominant background, where less dense materials flow along the local magnetic field lines and accumulate in the dense sheetlets. The sheetlets, which feed the disc predominantly through its upper and lower surfaces, are the primary channels for mass and angular momentum transfer from the envelope to the disc. The protostellar disc inherits a small fraction (up to 10 per cent) of the magnetic flux from the envelope, resulting in a disc-averaged net vertical field strength of 1–10 mG and a somewhat stronger toroidal field, potentially detectable through ALMA Zeeman observations.

The inherited magnetic field from the envelope plays a dominant role in disc angular momentum evolution, enabling the formation of gravitationally stable discs in cases where the disc field is relatively well-coupled to the gas. Its influence remains significant even in marginally gravitationally unstable discs formed in the more magnetically diffusive cases, removing angular momentum at a rate comparable to or greater than that caused by spiral arms. The magnetically driven disc evolution is consistent with the apparent scarcity of prominent spirals capable of driving rapid accretion in deeply embedded protostellar discs. The dense gravomagneto sheetlets observed in our simulations may correspond to the ‘accretion streamers’ increasingly detected around protostars."

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(video "The Origin of the Universe" (04:24))

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[wayti-blog]

Scientists set sustained fusion energy record

Scientists in the UK have set a new record for energy generated by nuclear fusion, an achievement heralded as a significant step toward conquering one of the biggest scientific and engineering challenges. Researchers from the EUROfusion consortium more than doubled previous records achieved in 1997 at the UK Atomic Energy Authority (UKAEA) site in Oxford […]

“Researchers from the EUROfusion consortium more than doubled previous records achieved in 1997 at the UK Atomic Energy Authority (UKAEA) site in Oxford using the same fuel mixture of deuterium-tritium (D-T) to be used by commercial fusion energy powerplants.

In total, 59 megajoules of sustained fusion energy was demonstrated over the duration of the five-second experiment by scientists and engineers working on the Joint European Torus (JET), which is the world’s largest and most powerful operational tokamak. During this experiment, JET averaged a fusion power of around 11MW.” 

“Fusion promises a near-limitless green electricity source for the long term, using small amounts of fuel that can be sourced worldwide from inexpensive materials. The fusion process brings together atoms of light elements like hydrogen at high temperatures to form helium and release tremendous energy as heat. Fusion is inherently safe in that it cannot start a run-away process.“

“Commenting on today’s announcement, Prof Robin Grimes FRS FREng, Steele Professor of Energy Material at Imperial College London, said: “This is further confirmation that the practical physics of fusion can deliver the energy levels we need to decarbonise our energy needs, not only for electricity but also heat. While there are many engineering challenges to overcome, this provides decision makers with the evidence and thus the confidence needed to keep up the momentum.””

[wayti-blog]

Exploring Why This Nuclear Fusion Breakthrough Matters

(see also safire project / ITER-project)

[wayti-blog]

🤩 NATURE'S SECRETS OF MAGNETISM 🥰

Pretty. Cool.

[you-are-another-me]

[engelfire]