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Intermittent reconnection and plasmoids in UV bursts in the low solar atmosphere
L. Rouppe van der Voort, B. De Pontieu, G. B. Scharmer +9
Magnetic reconnection is thought to drive a wide variety of dynamic phenomena in the solar atmosphere. Yet the detailed physical mechanisms driving reconnection are difficult to di…
Surges and Si IV bursts in the solar atmosphere. Understanding IRIS and SST observations through RMHD experiments
D. Nóbrega-Siverio, J. Martínez-Sykora, F. Moreno-Insertis +1
Surges often appear as a result of the emergence of magnetized plasma from the solar interior. Traditionally, they are observed in chromospheric lines such as H 6563 Åand Ca II…
On the generation of solar spicules and Alfvénic waves
Juan Martínez-Sykora, Bart De Pontieu, Viggo H. Hansteen +3
In the lower solar atmosphere, the chromosphere is permeated by jets known as spicules, in which plasma is propelled at speeds of 50 to 150 kilometers per second into the corona. T…
Why Is Non-thermal Line Broadening of Spectral Lines in The Lower Transition Region of the Sun Independent of Spatial Resolution?
Bart De Pontieu, Scott McIntosh, Juan Martinez-Sykora +2
Spectral observations of the solar transition region (TR) and corona show broadening of spectral lines beyond what is expected from thermal and instrumental broadening. The remaini…
What causes the high apparent speeds in chromospheric and transition region spicules on the Sun?
Bart De Pontieu, Juan Martinez-Sykora, Georgios Chintzoglou
Spicules are the most ubuiquitous type of jets in the solar atmosphere. The advent of high-resolution imaging and spectroscopy from the Interface Region Imaging Spectrograph (IRIS)…
Observations and numerical models of solar coronal heating associated with spicules
Bart De Pontieu, Ineke De Moortel, Juan Martinez-Sykora +1
Spicules have been proposed as significant contributors to the mass and energy balance of the corona. While previous observations have provided a glimpse of short-lived transient b…