Now showing items 171-190 of 637

  • Robustini, Carolina; Leenaarts, Jorrit; de la Cruz Rodriguez, Jaime; Rouppe, Van Der Voort Luc (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    We report on a fan-shaped set of high-speed jets above a strongly magnetized light bridge (LB) of a sunspot observed in the Hα line. We study the origin, dynamics, and thermal properties of the jets using high-resolution ...
  • Armstrong, John A.; Fletcher, Lyndsay (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    The volume of data being collected in solar physics has exponentially increased over the past decade and with the introduction of the Daniel K. Inouye Solar Telescope (DKIST) we will be entering the age of petabyte solar ...
  • Pécseli, Hans L.; Trulsen, Jan K.; Stiansen, Jan Erik; Sundby, Svein; Fossum, Petter (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Analytical models for the statistical distribution of the gut content of fish larvae in a turbulent ocean environment are compared to data obtained in a field experiment. The proposed model allows the nutrition state and ...
  • Tiwari, Sanjiv K.; Panesar, Navdeep K.; Moore, Ronald L.; De Pontieu, Bart Walter; Winebarger, Amy R.; Golub, Leon; Savage, Sabrina L.; Rachmeler, L. A.; Kobayashi, Ken; Testa, Paola; Warren, Harry P.; Brooks, David H.; Cirtain, Jonathan W.; McKenzie, David E.; Morton, Richard J.; Peter, Hardi; Walsh, Robert W. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    The second Hi-C flight (Hi-C 2.1) provided unprecedentedly high spatial and temporal resolution (~250 km, 4.4 s) coronal EUV images of Fe ix/x emission at 172 Å of AR 12712 on 2018 May 29, during 18:56:21–19:01:56 UT. Three ...
  • Brajša, R.; Sudar, D.; Benz, A. O.; Skokić, I.; Bárta, M.; De Pontieu, Bart Walter; Kim, S.; Kobelski, A.; Kuhar, M.; Shimojo, M.; Wedemeyer, Sven; White, S.; Yagoubov, P.; Yan, Y. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Context: Various solar features can be seen in emission or absorption on maps of the Sun in the millimetre and submillimetre wavelength range. The recently installed Atacama Large Millimetre/submillimetre Array (ALMA) is ...
  • Bastian, T. S.; Chintzoglou, G.; De Pontieu, Bart Walter; Shimojo, M.; Schmit, D.; Leenaarts, Jorrit; Loukitcheva, M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    We present joint observations of the Sun by the Atacama Large Millimeter/submillimeter Array (ALMA) and the Interface Region Imaging Spectrograph (IRIS). Both millimeter/submillimeter-λ continuum emission and ultraviolet ...
  • Kohutova, Petra; Verwichte, Erwin; Froment, Clara (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Context. Torsional Alfvén waves are promising candidates for the transport of energy across different layers of the solar atmosphere. They have been predicted theoretically for decades. Previous detections of Alfvén waves ...
  • Nindos, A.; Alissandrakis, C. E.; Bastian, T. S.; Patsourakos, S.; De Pontieu, Bart Walter; Warren, H.; Ayres, T.; Hudson, H. S.; Shimizu, T.; Vial, J.-C.; Wedemeyer, Sven; Yurchyshyn, V. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    We present an overview of high-resolution quiet Sun observations, from disk center to the limb, obtained with the Atacama Large millimeter and sub-millimeter Array (ALMA) at 3 mm. Seven quiet-Sun regions were observed at ...
  • Liu, W.; De Pontieu, Bart Walter; Vial, J.-C.; Title, Alan M.; Carlsson, Mats; Uitenbroek, Han; Okamoto, T. J.; Berger, Thomas E.; Antolin, Patrick (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Spectroscopic observations of prominence eruptions associated with coronal mass ejections (CMEs), although relatively rare, can provide valuable plasma and three-dimensional geometry diagnostics. We report the first ...
  • Rodger, Andrew S.; Labrosse, Nicolas; Wedemeyer, Sven; Szydlarski, Mikolaj Marcin; Simões, Paulo J. A.; Fletcher, Lyndsay (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    The aim of this study is to demonstrate how the logarithmic millimeter continuum gradient observed using the Atacama Large Millimeter/submillimeter Array (ALMA) may be used to estimate optical thickness in the solar ...
  • Sand, Maria (Doctoral thesis / Doktoravhandling, 2014)
  • Yang, Weiqiang; Pan, Supriya; Mota, David; Du, Minghui (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    It is always interesting to investigate how well can a future experiment perform with respect to others (present or future ones). Cosmology is really an exciting field where a lot of puzzles are still unknown. In this ...
  • Kohutova, Petra; Verwichte, Erwin; Froment, Clara (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Context. Coronal rain consists of cool plasma condensations formed in coronal loops as a result of thermal instability. The standard models of coronal rain formation assume that the heating is quasi-steady and localised ...
  • Leenaarts, Jorrit; Pereira, Tiago Mendes Domingos; Carlsson, Mats; Uitenbroek, H.; De Pontieu, Bart Walter (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    NASA's Interface Region Imaging Spectrograph (IRIS) space mission will study how the solar atmosphere is energized. IRIS contains an imaging spectrograph that covers the Mg II h&k lines as well as a slit-jaw imager centered ...
  • Leenaarts, Jorrit; Pereira, Tiago Mendes Domingos; Carlsson, Mats; Uitenbroek, H.; De Pontieu, Bart Walter (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    NASA's Interface Region Imaging Spectrograph (IRIS) small explorer mission will study how the solar atmosphere is energized. IRIS contains an imaging spectrograph that covers the Mg II h&k lines as well as a slit-jaw imager ...
  • Pereira, Tiago Mendes Domingos; Leenaarts, Jorrit; De Pontieu, Bart Walter; Carlsson, Mats; Uitenbroek, Han (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    The Mg II h&k lines are the prime chromospheric diagnostics of NASA's Interface Region Imaging Spectrograph (IRIS). In the previous papers of this series, we used a realistic three-dimensional radiative magnetohydrodynamics ...
  • Mendes Domingos Pereira, Tiago; Carlsson, Mats; De Pontieu, Bart Walter; Hansteen, Viggo (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    A triplet of subordinate lines of Mg ii exists in the region around the h&k lines. In solar spectra these lines are seen mostly in absorption, but in some cases can become emission lines. The aim of this work is to study ...
  • Lin, Hsiao-Hsuan; Carlsson, Mats; Leenaarts, Jorrit (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    The C i 135.58 nm line is located in the wavelength range of NASA's Interface Region Imaging Spectrograph (IRIS) small explorer mission. We study the formation and diagnostic potential of this line by means of non ...
  • Rathore, Bhavna; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    The C ii 133.5nm lines are important observables for the NASA/SMEX mission Interface Region Imaging Spectrograph. To make three-dimensional (3D) non-LTE radiative transfer computationally feasible, it is crucial to have a ...
  • Rathore, Bhavna; Carlsson, Mats; Leenaarts, Jorrit; De Pontieu, Bart Walter (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    We use 3D radiation magnetohydrodynamic models to investigate how the thermodynamic quantities in the simulation are encoded in observable quantities, thus exploring the diagnostic potential of the C ii 133.5 nm lines. We ...