activity
19982026
most citedThe second flight of the SUNRISE balloon-borne solar observatory: overview of instrument updates, the flight, the data and first results

145 citations · 1.6k across the 41 of their papers we have counts for

collaborators

42 papers

astro-ph.SR2026

DKIST unveils MHD-predicted sub-50 km photospheric vortices

S. Vargas Dominguez, O. A. Calvo Rebellon, J. S. Castellanos Duran +4

Solar vortices are rotating plasma structures that play a key role in the transport of energy and magnetic helicity from the photosphere to the chromosphere and corona. While numer…

astro-ph.SR2026

Wave excitation by a collapsing granule: insights from IFU observations and high-resolution RMHD simulations

J. Buttler, G. Vigeesh, I. Milić +5

Context. Granular collapse is an ubiquitous process of granular evolution on the solar surface, but it is hard to analyze in sufficient spatial, temporal, and spectral detail. Aims…

astro-ph.SR2026

Sunrise III: Instrument, mission, data, and first results

Sami K. Solanki, H. N. Smitha, Andreas Lagg +66

Sunrise III is a stratospheric balloon-borne solar observatory with a 1-m diameter telescope and three post-focus instruments, along with an image stabilisation system, all within…

astro-ph.SR2026

Inspectorch: Efficient rare event exploration in solar observations

C. J. Díaz Baso, I. J. Soler Poquet, C. Kuckein +2

The Sun is observed in unprecedented detail, enabling studies of its activity on very small spatiotemporal scales. However, the large volume of data collected by our telescopes can…

astro-ph.SR2024★ 6 cited

Large-amplitude transverse MHD waves prevailing in the H chromosphere of a solar quiet region revealed by MiHI integrated field spectral observations

Jongchul Chae, Michiel van Noort, Maria S. Madjarska +3

The investigation of plasma motions in the solar chromosphere is crucial for understanding the transport of mechanical energy from the interior of the Sun to the outer atmosphere a…

astro-ph.SR2024★ 6 cited

: A spectropolarimetric inversion code for the coupled inference of atomic line parameters

D. Vukadinović, H. N. Smitha, A. Korpi-Lagg +3

For many transitions, atomic data, such as the oscillator strength (log(gf)) and the central wavelength of the line, are poorly constrained or even unknown. We present and test a n…

astro-ph.SR2024★ 5 cited

The MODEST catalog of depth-dependent spatially coupled inversions of sunspots observed by Hinode/SOT-SP

J. S. Castellanos Durán, N. Milanovic, A. Korpi-Lagg +3

We present a catalog that we named MODEST containing depth-dependent information on the atmospheric conditions inside sunspot groups of all types. The catalog is currently composed…

astro-ph.SR2023★ 16 cited

Wavefront error of PHI/HRT on Solar Orbiter at various heliocentric distances

F. Kahil, A. Gandorfer, J. Hirzberger +31

We use wavefront sensing to characterise the image quality of the the High Resolution Telescope (HRT) of the Polarimetric and Helioseismic Imager (SO/PHI) data products during the…

astro-ph.SR2023★ 27 cited

Ultra-high resolution observations of plasmoid-mediated magnetic reconnection in the deep solar atmosphere

L. Rouppe van der Voort, M. van Noort, J. de la Cruz Rodriguez

Magnetic reconnection in the deep solar atmosphere can give rise to enhanced emission in the Balmer hydrogen lines, a phenomenon referred to as Ellerman bombs. To effectively trace…

astro-ph.SR2022★ 18 cited

The non-LTE formation of the Fe I 6173 A line in the solar atmosphere

H. N. Smitha, M. van Noort, S. K. Solanki +1

The current analysis is dedicated to a detailed investigation of the non-Local Thermodynamic Equilibrium (NLTE) effects influencing the formation of the Fe I 6173 A line, which is…

astro-ph.SR2021★ 4 cited

Correction of atmospheric stray-light in restored slit-spectra

Sudharshan Saranathan, Michiel van Noort, Sami K. Solanki

A long-standing issue in solar ground-based observations has been the contamination of data due to stray light, which is particularly relevant in inversions of spectropolarimetric…

astro-ph.SR2021

Similarities of magnetoconvection in the umbra and in the penumbra of sunspots

B. Löptien, A. Lagg, M. van Noort +1

Context. It is unclear why there is a rather sharp boundary in sunspots between the umbra and the penumbra. Both regions exhibit magnetoconvection, manifesting in penumbral filamen…

astro-ph.SR2019★ 6 cited

Science Requirement Document (SRD) for the European Solar Telescope (EST) (3rd Edition, December 2025)

Rolf Schlichenmaier, Luis R. Bellot Rubio, Manuel Collados Vera +31

The European Strategy Forum on Research Infrastructures (ESFRI) included the European Solar Telescope (EST) as an ESFRI Project in its 2016 Roadmap and confirmed this status in 202…

astro-ph.SR2017★ 33 cited

Magneto-static modelling from SUNRISE/IMaX: Application to an active region observed with SUNRISE II

T. Wiegelmann, T. Neukirch, D. H. Nickeler +13

Magneto-static models may overcome some of the issues facing force-free magnetic field extrapolations. So far they have seen limited use and have faced problems when applied to qui…

astro-ph.SR2017★ 32 cited

Oscillations on width and intensity of slender Ca II H fibrils from Sunrise/SuFI

R. Gafeira, S. Jafarzadeh, S. K. Solanki +12

We report the detection of oscillations in slender Ca II H fibrils (SCFs) from high-resolution observations acquired with the Sunrise balloon-borne solar observatory. The SCFs show…

astro-ph.SR2017★ 145 cited

The second flight of the SUNRISE balloon-borne solar observatory: overview of instrument updates, the flight, the data and first results

S. K. Solanki, T. L. Riethmüller, P. Barthol +32

The SUNRISE balloon-borne solar observatory, consisting of a 1~m aperture telescope that provided a stabilized image to a UV filter imager and an imaging vector polarimeter, carrie…

astro-ph.SR2016★ 23 cited

Morphological properties of slender Ca II H fibrils observed by SUNRISE II

R. Gafeira, A. Lagg, Sami K Solanki +12

We use seeing-free high spatial resolution Ca II H data obtained by the SUNRISE observatory to determine properties of slender fibrils in the lower solar chromosphere. In this work…

astro-ph.SR2016★ 8 cited

Spectropolarimetric evidence for a siphon flow along an emerging magnetic flux tube

Iker S. Requerey, B. Ruiz Cobo, J. C. Del Toro Iniesta +12

We study the dynamics and topology of an emerging magnetic flux concentration using high spatial resolution spectropolarimetric data acquired with the Imaging Magnetograph eXperime…

astro-ph.SR2016★ 29 cited

A new MHD-assisted Stokes inversion technique

T. L. Riethmüller, S. K. Solanki, P. Barthol +10

We present a new method of Stokes inversion of spectropolarimetric data and evaluate it by taking the example of a SUNRISE/IMaX observation. An archive of synthetic Stokes profiles…

astro-ph.SR2016★ 41 cited

A Tale of Two Emergences: Sunrise II Observations of Emergence Sites in a Solar Active Region

Rebecca Centeno, Julian Blanco Rodriguez, Jose Carlos Del Toro Iniesta +11

In June 2013, the two scientific instruments onboard the second Sunrise mission witnessed, in detail, a small-scale magnetic flux emergence event as part of the birth of an active…

astro-ph.SR2016★ 16 cited

Kinematics of Magnetic Bright Features in the Solar Photosphere

Shahin Jafarzadeh, S. K. Solanki, R. H. Cameron +12

Convective flows are known as the prime means of transporting magnetic fields on the solar surface. Thus, small magnetic structures are good tracers of the turbulent flows. We stud…

astro-ph.SR2016★ 85 cited

Solar Coronal Loops Associated with Small-scale Mixed Polarity Surface Magnetic Fields

L. P. Chitta, H. Peter, S. K. Solanki +12

How and where are coronal loops rooted in the solar lower atmosphere? The details of the magnetic environment and its evolution at the footpoints of coronal loops are crucial to un…

astro-ph.SR2016★ 61 cited

Transverse Oscillations in Slender Ca II H Fibrils Observed with Sunrise/SuFI

Shahin Jafarzadeh, S. K. Solanki, R. Gafeira +11

We present observations of transverse oscillations in slender Ca II H fibrils (SCFs) in the lower solar chromosphere. We use a 1 hr long time series of high- (spatial and temporal-…

astro-ph.SR2016★ 48 cited

Slender Ca II H Fibrils Mapping Magnetic Fields in the Low Solar Chromosphere

Shahin Jafarzadeh, R. J. Rutten, S. K. Solanki +14

A dense forest of slender bright fibrils near a small solar active region is seen in high-quality narrowband Ca II H images from the SuFI instrument onboard the Sunrise balloon-bor…