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Probing the Physics of the Solar Atmosphere with the Multi-slit Solar Explorer (MUSE): II. Flares and Eruptions
Mark C. M. Cheung, Juan Martínez-Sykora, Paola Testa +25
Current state-of-the-art spectrographs cannot resolve the fundamental spatial (sub-arcseconds) and temporal scales (less than a few tens of seconds) of the coronal dynamics of sola…
Probing the physics of the solar atmosphere with the Multi-slit Solar Explorer (MUSE): I. Coronal Heating
Bart De Pontieu, Paola Testa, Juan Martinez-Sykora +24
The Multi-slit Solar Explorer (MUSE) is a proposed NASA MIDEX mission, currently in Phase A, composed of a multi-slit EUV spectrograph (in three narrow spectral bands centered arou…
Multi-Channel Auto-Calibration for the Atmospheric Imaging Assembly using Machine Learning
Luiz F. G. dos Santos, Souvik Bose, Valentina Salvatelli +7
Solar activity plays a quintessential role in influencing the interplanetary medium and space-weather around the Earth. Remote sensing instruments onboard heliophysics space missio…
Benchmark Test of Differential Emission Measure Codes and Multi-Thermal Energies in Solar Active Regions
M. J. Aschwanden, P. Boerner, A. Caspi +3
We compare the ability of 11 Differential Emission Measure (DEM) forward-fitting and inversion methods to constrain the properties of active regions and solar flares by simulating…
Thermal Diagnostics with the Atmospheric Imaging Assembly onboard the Solar Dynamics Observatory: A Validated Method for Differential Emission Measure Inversions
Mark C. M. Cheung, P. Boerner, C. J. Schrijver +4
We present a new method for performing differential emission measure (DEM) inversions on narrow-band EUV images from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynami…
Global Energetics of Solar Flares: II. Thermal Energies
M. J. Aschwanden, P. Boerner, D. Ryan +3
We present the second part of a project on the global energetics of solar flares and CMEs that includes about 400 M- and X-class flares observed with AIA/SDO during the first 3.5 y…
Internetwork chromospheric bright grains observed with IRIS
Juan Martínez-Sykora, Luc Rouppe van der Voort, Mats Carlsson +18
The Interface Region Imaging Spectrograph (IRIS) reveals small-scale rapid brightenings in the form of bright grains all over coronal holes and the quiet sun. These bright grains a…
Homologous Helical Jets: Observations by IRIS, SDO and Hinode and Magnetic Modeling with Data-Driven Simulations
Mark C. M. Cheung, B. De Pontieu, T. D. Tarbell +18
We report on observations of recurrent jets by instruments onboard the Interface Region Imaging Spectrograph (IRIS), Solar Dynamics Observatory (SDO) and Hinode spacecrafts. Over a…
The Unresolved Fine Structure Resolved - IRIS observations of the Solar Transition Region
V. Hansteen, B. De Pontieu, M. Carlsson +18
The heating of the outer solar atmospheric layers, i.e., the transition region and corona, to high temperatures is a long standing problem in solar (and stellar) physics. Solutions…
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…
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…
An Interface Region Imaging Spectrograph first view on Solar Spicules
T. M. D. Pereira, B. De Pontieu, M. Carlsson +17
Solar spicules have eluded modelers and observers for decades. Since the discovery of the more energetic type II, spicules have become a heated topic but their contribution to the…
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…
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…
Photometric and Thermal Cross-calibration of Solar EUV Instruments
P. Boerner, P. Testa, H. Warren +2
We present an assessment of the accuracy of the calibration measurements and atomic physics models that go into calculating the SDO/AIA response as a function of wavelength and tem…
Soft X-ray Fluxes of Major Flares Far Behind the Limb as Estimated Using STEREO EUV Images
N. V. Nitta, M. J. Aschwanden, P. F. Boerner +3
With increasing solar activity since 2010, many flares from the backside of the Sun have been observed by the Extreme Ultraviolet Imager (EUVI) on either of the twin STEREO spacecr…
Solar Corona Loop Studies with AIA: I. Cross-Sectional Temperature Structure
Markus J. Aschwanden, Paul Boerner
We present a first systematic study on the cross-sectional temperature structure of coronal loops using the six coronal temperature filters of the Atmospheric Imaging Assembly (AIA…