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Search for high velocities in the disk counterpart of type II spicules
Ø. Langangen, B. De Pontieu, M. Carlsson +3
Recently, De Pontieu et al. (2007b) discovered a class of spicules that evolves more rapidly than previously known spicules, with rapid apparent motions of 50--150 km s, t…
Reappraising Transition Region Line Widths in light of Recent Alfvén Wave Discoveries
Scott W. McIntosh, Bart De Pontieu, Theodore D. Tarbell
We provide a new interpretation of ultraviolet transition region emission line widths observed by the SUMER instrument on the Solar and Heliospheric Observatory (SOHO). This invest…
On connecting the dynamics of the chromosphere and transition region with Hinode SOT and EIS
Viggo H. Hansteen, Bart De Pontieu, Mats Carlsson +14
We use coordinated Hinode SOT/EIS observations that include high-resolution magnetograms, chromospheric and TR imaging and TR/coronal spectra in a first test to study how the dynam…
A Tale Of Two Spicules: The Impact of Spicules on the Magnetic Chromosphere
Bart De Pontieu, Scott W. McIntosh, Viggo H. Hansteen +11
We use high-resolution observations of the Sun in Ca II H 3968 A from the Solar Optical Telescope on Hinode to show that there are at least two types of spicules that dominate the…
Spectroscopic measurements of dynamic fibrils in the Ca {\small{II}} 8662 Å line
Oystein Langangen, Mats Carlsson, Luc Rouppe van der Voort +2
We present high spatial resolution spectroscopic measurements of dynamic fibrils (DFs) in the Ca {\small{II}} 8662 Å line. These data show clear Doppler shifts in the identified DF…
Can High Frequency Acoustic Waves Heat the Quiet Sun Chromosphere?
Mats Carlsson, Viggo H. Hansteen, Bart De Pontieu +9
We use Hinode/SOT Ca II H-line and blue continuum broadband observations to study the presence and power of high frequency acoustic waves at high spatial resolution. We find that t…