Episodic Plasma Flows and Coronal Brightenings in an Arch Filament System Observed with Sunrise iii

@article{manrique2026episodic,
  title = {{Episodic Plasma Flows and Coronal Brightenings in an Arch Filament System Observed with Sunrise iii}},
  author = {Sergio Javier González Manrique and Juan Carlos Trelles Arjona and Christoph Kuckein and Azaymi L. Siu-Tapia and Fernando Moreno-Insertis and Samrat Sen and Sami K. Solanki and Adur Pastor Yabar and Andrés Asensio Ramos and Daniel Nóbrega-Siverio and Manuel Collados and David Orozco Suárez and María Helena Rivero González and Sara Esteban Pozuelo and Jose Carlos del Toro Iniesta and Maria Balaguer Jiménez and Esteban Sanchis Kilders and Ignacio Torralbo and Yukio Katsukawa and Yusuke Kawabata and Hirohisa Hara and Toshifumi Shimizu and Takayoshi Oba and Andreas Lagg and Achim Gandorfer and Pietro Bernasconi and Thomas Berkefeld and Alex Feller and Tino L. Riethmüller and Alberto Álvarez-Herrero and Masahito Kubo and H. N. Smitha and Bianca Grauf and Michael Carpenter and Alexander Bell and Valentín Martínez Pillet and Francisco Javier Bailén and Julian Blanco Rodríguez and Juan Sebastián Castellanos Durán and Edvarda Harnes and Johannes Hoelken and Francisco A. Iglesias and Ryohtaroh T. Ishikawa and Takuma Matsumoto and Hanna Strecker and Dušan Vukadinović},
  journal = {The Astrophysical Journal Letters},
  year = {2026},
  month = oct,
  doi = {10.3847/2041-8213/aeacdf},
  url = {https://iopscience.iop.org/article/10.3847/2041-8213/aeacdf},
  note = {CC BY 4.0},
}

TY  - JOUR
TI  - Episodic Plasma Flows and Coronal Brightenings in an Arch Filament System Observed with Sunrise iii
AU  - Sergio Javier González Manrique
AU  - Juan Carlos Trelles Arjona
AU  - Christoph Kuckein
AU  - Azaymi L. Siu-Tapia
AU  - Fernando Moreno-Insertis
AU  - Samrat Sen
AU  - Sami K. Solanki
AU  - Adur Pastor Yabar
AU  - Andrés Asensio Ramos
AU  - Daniel Nóbrega-Siverio
AU  - Manuel Collados
AU  - David Orozco Suárez
AU  - María Helena Rivero González
AU  - Sara Esteban Pozuelo
AU  - Jose Carlos del Toro Iniesta
AU  - Maria Balaguer Jiménez
AU  - Esteban Sanchis Kilders
AU  - Ignacio Torralbo
AU  - Yukio Katsukawa
AU  - Yusuke Kawabata
AU  - Hirohisa Hara
AU  - Toshifumi Shimizu
AU  - Takayoshi Oba
AU  - Andreas Lagg
AU  - Achim Gandorfer
AU  - Pietro Bernasconi
AU  - Thomas Berkefeld
AU  - Alex Feller
AU  - Tino L. Riethmüller
AU  - Alberto Álvarez-Herrero
AU  - Masahito Kubo
AU  - H. N. Smitha
AU  - Bianca Grauf
AU  - Michael Carpenter
AU  - Alexander Bell
AU  - Valentín Martínez Pillet
AU  - Francisco Javier Bailén
AU  - Julian Blanco Rodríguez
AU  - Juan Sebastián Castellanos Durán
AU  - Edvarda Harnes
AU  - Johannes Hoelken
AU  - Francisco A. Iglesias
AU  - Ryohtaroh T. Ishikawa
AU  - Takuma Matsumoto
AU  - Hanna Strecker
AU  - Dušan Vukadinović
PY  - 2026
DA  - 2026/10/22
JO  - The Astrophysical Journal Letters
DO  - 10.3847/2041-8213/aeacdf
UR  - https://iopscience.iop.org/article/10.3847/2041-8213/aeacdf
AB  - Emerging flux regions (EFRs) are key sites of magnetic flux transport and energy release in the solar atmosphere, often hosting arch filament systems (AFSs). We present high-resolution observations of an EFR obtained during the Sunrise III mission, combining spectropolarimetric measurements from the Tunable Magnetograph (TuMag) and Sunrise Chromospheric Infrared Spectro-Polarimeter (SCIP) with complementary observations from the Solar Dynamics Observatory (SDO). The data set provides a continuous view of an AFS over nearly 4 hr. Line-of-sight (LOS) velocities derived from the Mg I b ₂ line reveal three episodic plasma-flow events characterized by strong downflows reaching up to ∼17 km s ⁻¹ at the AFS footpoints and enhanced upflows near the loop tops. Although this pattern agrees with the classical emergence and draining scenario, the strongest upflows and downflows occur nearly simultaneously. Atmospheric Imaging Assembly (AIA) 304 and 171 Å observations reveal transient extreme-UV (EUV) brightenings in the surrounding emerging system; some occur during episodes of enhanced LOS velocities, while others do not, indicating that the temporal correspondence is not systematic. Multiline spectropolarimetric inversions reveal temperatures between ∼4000 and ∼10,000 K and a smooth variation of the magnetic field inclination along a representative AFS loop. Non-force-free-field extrapolations provide the large-scale magnetic context of the low-lying AFS loops and surrounding coronal structures. Together, the observations reveal a spatially and temporally complex evolution of the emerging system without establishing a direct causal connection between the local plasma-flow enhancements and the EUV brightenings.
SN  - 2041-8205
SN  - 2041-8213
ER  -