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On the prevalence of small-scale twist in the solar chromosphere and transition region
B. De Pontieu, L. Rouppe van der Voort, S. W. McIntosh +21
The solar chromosphere and transition region (TR) form an interface between the Sun's surface and its hot outer atmosphere. Here most of the non-thermal energy that powers the sola…
Evidence of Non-Thermal Particles in Coronal Loops Heated Impulsively by Nanoflares
Paola Testa, Bart De Pontieu, Joel Allred +21
The physical processes causing energy exchange between the Sun's hot corona and its cool lower atmosphere remain poorly understood. The chromosphere and transition region (TR) form…
Hot Explosions in the Cool Atmosphere of the Sun
H. Peter, H. Tian, W. Curdt +20
The solar atmosphere was traditionally represented with a simple one-dimensional model. Over the past few decades, this paradigm shifted for the chromosphere and corona that consti…
Prevalence of Small-scale Jets from the Networks of the Solar Transition Region and Chromosphere
H. Tian, E. E. DeLuca, S. R. Cranmer +24
As the interface between the Sun's photosphere and corona, the chromosphere and transition region play a key role in the formation and acceleration of the solar wind. Observations…
Observations of Subarcsecond Bright Dots in the Transition Region above Sunspots with the Interface Region Imaging Spectrograph
H. Tian, L. Kleint, H. Peter +5
Observations with the Interface Region Imaging Spectrograph (IRIS) have revealed numerous sub-arcsecond bright dots in the transition region above sunspots. These bright dots are s…
Detection of supersonic downflows and associated heating events in the transition region above sunspots
L. Kleint, P. Antolin, H. Tian +18
IRIS data allow us to study the solar transition region (TR) with an unprecedented spatial resolution of 0.33 arcsec. On 2013 August 30, we observed bursts of high Doppler shifts s…
High-resolution Observations of the Shock Wave Behavior for Sunspot Oscillations with the Interface Region Imaging Spectrograph
H. Tian, E. DeLuca, K. K. Reeves +20
We present the first results of sunspot oscillations from observations by the Interface Region Imaging Spectrograph. The strongly nonlinear oscillation is identified in both the sl…
Thermal structure of hot non-flaring corona from Hinode/EIS
A. Petralia, F. Reale, P. Testa +1
In previous studies a very hot plasma component has been diagnosed in solar active regions through the images in three different narrow-band channels of SDO/AIA. This diagnostic fr…
The Interface Region Imaging Spectrograph (IRIS)
B. De Pontieu, A. M. Title, J. Lemen +85
The Interface Region Imaging Spectrograph (IRIS) small explorer spacecraft provides simultaneous spectra and images of the photosphere, chromosphere, transition region, and corona…