Browsing Institutt for teoretisk astrofysikk by Author "Nelson, C. J."

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  • The detection of upwardly propagating waves channeling energy from the chromosphere to the low corona 
    Freij, N.; Scullion, Eamon; Nelson, C. J.; Mumford, S.; Wedemeyer-Böhm, Sven; Erdélyi, R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    There have been ubiquitous observations of wave-like motions in the solar atmosphere for decades. Recent improvements to space- and ground-based observatories have allowed the focus to shift to smaller magnetic structures ...
  • The formation of small-scale umbral brightenings in sunspot atmospheres 
    Nelson, C. J.; de Jorge Henriques, Vasco Manuel; Mathioudakis, M.; Keenan, F. P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Context. Sunspot atmospheres have been shown to be highly inhomogeneous hosting both quasi-stable and transient features, such as small-scale umbral brightenings (previously named “umbral micro-jets”) and dark fibril-like ...