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Solar Ultraviolet Bursts
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SYSNO ASEP 0497548 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Solar Ultraviolet Bursts Author(s) Young, P. R. (US)
Tian, H. (CN)
Peter, H. (DE)
Rutten, R.J. (NL)
Nelson, C. J. (GB)
Huang, Z. (CN)
Schmieder, B. (FR)
Vissers, G.J.M. (SE)
Toriumi, S. (JP)
van der Voort, L. H.M.R. (NO)
Madjarska, M. S. (BG)
Danilović, J. (ME)
Berlicki, Arkadiusz (ASU-R) RID
Chitta, L. P. (DE)
Cheung, M. C. (US)
Madsen, C. (US)
Reardon, M. W. (US)
Katsukawa, Y. (JP)
Heinzel, Petr (ASU-R) RID, ORCIDNumber of authors 19 Article number 120 Source Title Space Science Reviews. - : Springer - ISSN 0038-6308
Roč. 214, č. 8 (2018)Number of pages 39 s. Publication form Online - E Language eng - English Country NL - Netherlands Keywords Sun activity ; atmosphere Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics OECD category Astronomy (including astrophysics,space science) R&D Projects GA16-18495S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support ASU-R - RVO:67985815 UT WOS 000449471400002 EID SCOPUS 85056081599 DOI 10.1007/s11214-018-0551-0 Annotation The term “ultraviolet (UV) burst” is introduced to describe small, intense, transient brightenings in ultraviolet images of solar active regions. We inventorize their properties and provide a definition based on image sequences in transition-region lines. Coronal signatures are rare, and most bursts are associated with small-scale, canceling opposite-polarity fields in the photosphere that occur in emerging flux regions, moving magnetic features in sunspot moats, and sunspot light bridges. We also compare UV bursts with similar transition-region phenomena found previously in solar ultraviolet spectrometry and with similar phenomena at optical wavelengths, in particular Ellerman bombs. Akin to the latter, UV bursts are probably small-scale magnetic reconnection events occurring in the low atmosphere, at photospheric and/or chromospheric heights. Their intense emission in lines with optically thin formation gives unique diagnostic opportunities for studying the physics of magnetic reconnection in the low solar atmosphere. This paper is a review report from an International Space Science Institute team that met in 2016–2017. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0290102
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