Finn forfatter "Bakke, Helle"

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  • Accelerated particle beams in a 3D simulation of the quiet Sun 
    Frogner, Lars; Gudiksen, Boris Vilhelm; Bakke, Helle (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Context. Observational and theoretical evidence suggest that beams of accelerated particles are produced in flaring events of all sizes in the solar atmosphere, from X-class flares to nanoflares. Current models of these ...
  • Accelerated particle beams in a 3D simulation of the quiet Sun: Lower atmospheric spectral diagnostics 
    Bakke, Helle; Frogner, Lars; Rouppe van der Voort, Luc; Gudiksen, Boris Vilhelm; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Context. Nanoflare heating through small-scale magnetic reconnection events is one of the prime candidates to explain heating of the solar corona. However, direct signatures of nanoflares are difficult to determine, and ...
  • Chromospheric emission from nanoflare heating in RADYN simulations 
    Bakke, Helle; Carlsson, Mats; Rouppe van der Voort, Luc; Gudiksen, Boris Vilhelm; Polito, V.; Testa, Paola; De Pontieu, Bart Walter (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Context. Heating signatures from small-scale magnetic reconnection events in the solar atmosphere have proven to be difficult to detect through observations. Numerical models that reproduce flaring conditions are essential ...
  • High-resolution Observations of the Low Atmospheric Response to Small Coronal Heating Events in an Active Region Core 
    Testa, Paola; Bakke, Helle; Rouppe van der Voort, Luc; De Pontieu, Bart Walter (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract High-resolution spectral observations of the lower solar atmosphere (chromosphere and transition region) during coronal heating events, in combination with predictions from models of impulsively heated ...
  • Impact of nanoflare heating in the lower solar atmosphere 
    Bakke, Helle (Doctoral thesis / Doktoravhandling, 2023)
    Understanding the mechanisms responsible for heating the solar atmosphere from a few thousand Kelvin in the photosphere to millions of degrees in the corona is a major challenge in solar physics. A number of potential ...
  • Non-thermal electrons from solar nanoflares In a 3D radiative MHD simulation 
    Bakke, Helle; Frogner, Lars; Gudiksen, Boris Vilhelm (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Context: We introduce a model for including accelerated particles in pure magnetohydrodynamics (MHD) simulations of the solar atmosphere. Aims: We show that the method is viable and produces results that enhance the realism ...