Two Episodes of a Filament Eruption from a Fan-spine Magnetic Configuration

Jiayan Yang; Junchao Hong; Haidong Li; Yunchun Jiang

doi:10.3847/1538-4357/aba7c0

Causes and Effects of Filament Eruptions

International Astronomical Union Colloquium ◽

10.1017/s0252921100047886 ◽

1998 ◽

Vol 167 ◽

pp. 342-349

Author(s):

Boris P. Filippov

Keyword(s):

Solar Activity ◽

Magnetic Configuration ◽

Filament Eruption ◽

Catastrophic Loss

AbstractObservational and theoretical aspects of filament destabilization are reviewed in light of the concept of filament eruption as catastrophic loss of equilibrium in a magnetic configuration of inverse polarity. Interrelations between eruptive prominences and other phenomena of solar activity such as flares, CMEs, and loop arcade are considered.

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REVIEW OF ELECTRIC AND MAGNETIC CONFIGURATION-MIXING EFFECTS IN ATOMIC SPECTRA

Le Journal de Physique Colloques ◽

10.1051/jphyscol:1982201 ◽

1982 ◽

Vol 43 (C2) ◽

pp. C2-1-C2-12 ◽

Cited By ~ 1

Author(s):

W. R.S. Garton

Keyword(s):

Magnetic Configuration ◽

Atomic Spectra ◽

Mixing Effects ◽

Configuration Mixing

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Observations for the Role of Flux rope Eruption in a Geoeffective Solar Flare

JOURNAL OF ADVANCES IN PHYSICS ◽

10.24297/jap.v4i2.6965 ◽

2014 ◽

Vol 4 (2) ◽

pp. 555-564

Author(s):

A.M Aslam

Keyword(s):

Solar Flare ◽

Flux Rope ◽

Magnetic Configuration ◽

Solar Dynamics Observatory ◽

Multi Wavelength ◽

Solar Dynamics ◽

Halo Coronal Mass Ejection ◽

Mass Ejection ◽

The Waves

On September 24, 2011 a solar flare of M 7.1 class was released from the Sun. The flare was observed by most of the space and ground based observatories in various wavebands. We have carried out a study of this flare to understand its causes on Sun and impact on earth. The flare was released from NOAA active region AR 11302 at 12:33 UT. Although the region had already produced many M class flares and one X- class flare before this flare, the magnetic configuration was not relaxed and still continued to evolve as seen from HMI observations. From the Solar Dynamics Observatory (SDO) multi-wavelength (131 Ã…, 171 Ã…, 304 Ã… and 1600Ã…) observations we identified that a rapidly rising flux rope triggered the flare although HMI observations revealed that magnetic configuration did not undergo a much pronounced change. The flare was associated with a halo Coronal Mass Ejection (CME) as recorded by LASCO/SOHO Observations. The flare associated CME was effective in causing an intense geomagnetic storm with minimum Dst index -103 nT. A radio burst of type II was also recorded by the WAVES/WIND. In the present study attempt is made to study the nature of coupling between solar transients and geospace.

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Scaling Up the Production of Electrodeposited Nanowires: A Roadmap towards Applications

Nanomaterials ◽

10.3390/nano11071657 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1657

Author(s):

Claudia Fernández-González ◽

Jesús C. Guzmán-Mínguez ◽

Alejandra Guedeja-Marrón ◽

Eduardo García-Martín ◽

Michael Foerster ◽

...

Keyword(s):

Electrochemical Synthesis ◽

Room Temperature ◽

Scaling Up ◽

Magnetic Configuration ◽

Metallic Nanowires ◽

Production Time ◽

Novel Synthesis ◽

Conventional Methods

The use of metallic nanowires is mostly reduced to scientific areas where a small quantity of nanostructures are needed. In order to broaden the applicability of these nanomaterials, it is necessary to establish novel synthesis protocols that provide a larger amount of nanowires than the conventional laboratory fabrication processes at a more competitive cost. In this work, we propose several modifications to the conventional electrochemical synthesis of nanowires in order to increase the production with considerably reduced production time and cost. To that end, we use a soft anodization procedure of recycled aluminum at room temperature to produce the alumina templates, followed by galvanostatic growth of CoFe nanowires. We studied their morphology, composition and magnetic configuration, and found that their properties are very similar to those obtained by conventional methods.

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