Quantum pinch effect

Kushwaha, Manvir S.

doi:10.48550/arxiv.1306.3567

Cited by 1 publication

(1 citation statement)

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“…Solar flares are explosive phenomena observed in the solar atmosphere filled with magnetized plasma, releasing energy on the order of 10 30 − 10 32 ergs within tens of minutes (Schrijver et al, 2012;Shibata and Magara, 2011), which is much larger in scale compared to laboratory experiments. The plasma is accelerated and collided inward (along the axis) by the axial magnetic pressure generated by the current, causing an increase in plasma density and temperature and forming a region of high temperature and high density near the axis (Kushwaha, 2013). Early controlled thermonuclear research attempted to achieve thermonuclear reactions using this method (Salpeter, 1954;Harris et al, 1983).…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Current Pinch Effect during Solar Flare Eruptions

Li,

Liang,

Zhou

et al. 2024

Preprint

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Based on the vector magnetograms obtained from the SDO/HMI, we calculate the line-of-sight current density distribution of the active region on 2017 September 6, using the integral form of Ampere's law. Comparing the distribution of the current density and the observed flare, we find that: Firstly, the changing trend of the total current density of the active region was consistent with the change of the X-ray flux of the X9.3 flare. Secondly, the distribution of the double-ribbon flare was co-spatial with a pair of conjugate current ribbons with opposite polarities, which were consistently located on both sides of the Line-of line. Additionally, these current ribbons exhibit significant and continuous changes during the flare eruption: During the early phase of the flare eruption, there was a substantial decrease in the area of the current ribbons, resulting in the emergence of a series of high-density small current islands. During the later phase, not only the area rapidly increases, but the flare kernel evolves into a the flare band with the full release of energy. We have discovered a strong spatial correspondence between the flare kernel and the current islands through positional comparisons. This process is consistent with the physical phenomenon of the current pinch effect. Therefore, we speculate that a current pinch effect may occur during the flare eruption, and the formation of the flare kernel is likely attributed to the current pinch effect.

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