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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Rapid magnetic up fl ows in the quiet-Sun photosphere were recently uncovered from both SUNRISE / IMaX and Hinode / SOT observations. Here, we study magnetic up flow events ( MUEs ) from high-quality, high- ( spatial, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
We use coordinated observations with the Interface Region Imaging Spectrograph (IRIS) and the Swedish 1 m Solar Telescope to identify the disk counterpart of type II spicules in upper-chromospheric and transition region ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Transverse magnetohydrodynamic waves have been shown to be ubiquitous in the solar atmosphere and can, in principle, carry sufficient energy to generate and maintain the Sun's million-degree outer atmosphere or corona. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
The C ii 133.5 nm multiplet has been observed by NASA's Interface Region Imaging Spectrograph (IRIS) in unprecedented spatial resolution. The aims of this work are to characterize these new observations of the C ii lines, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
We present Chandra and XMM-Newton observations of PLCK G036.7+14.9 from the Chandra–Planck Legacy Program. The high resolution X-ray observations reveal two close (~72'' = 193 kpc in projection) subclusters, G036N and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
We analyze coordinated observations of coronal rain in loops, spanning chromospheric, transition region (TR), and coronal temperatures with sub-arcsecond spatial resolution. Coronal rain is found to be a highly multithermal ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
We present a comprehensive method to analyze small-scale heating events in detail in a 3D magnetohydrodynamics simulation for quiet-Sun conditions. The method determines the number, volume, and some general geometric ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
The bimetric variational principle is a subtle reinterpretation of general relativity that assumes the spacetime connection to be generated by an independent metric. Unlike the so-called Palatini formalism that promotes ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Several extensions of the standard cosmological model include scalar fields as new degrees of freedom in the underlying gravitational theory. A particular class of these scalar field theories include screening mechanisms ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
We revisit the question of hemispherical power asymmetry in the WMAP and Planck temperature sky maps by measuring the local variance over the sky and on disks of various sizes. For the 2013 Planck sky map we find that none ...