A Forest of Emission Lines Observed by Sunrise III/SUSI above the Solar Limb

@article{duran2026forest,
  title = {{A Forest of Emission Lines Observed by Sunrise III/SUSI above the Solar Limb}},
  author = {Juan Sebastián Castellanos Durán and Francisco A. Iglesias and Sami K. Solanki and Andreas Lagg and Ivan Milic and H. N. Smitha and Dušan Vukadinović and Tino L. Riethmüller and Achim Gandorfer and Alex Feller and Julian Blanco Rodríguez and David Orozco Suárez and Yukio Katsukawa and Johannes Hölken and Jose Carlos del Toro Iniesta and Shihao Rao and Mariano Sanchez Toledo and Kunal Singh and Pietro Bernasconi and Thomas Berkefeld and Alberto Álvarez-Herrero and Masahito Kubo and Valentín Martínez Pillet and Bianca Grauf and Michael Carpenter and Alexander Bell and Hanna Strecker and Azaymi L. Siu-Tapia and Pablo Santamarina Guerrero and Yusuke Kawabata and Takuma Matsumoto and Ryohtaroh T. Ishikawa and Edvarda Harnes and Takayoshi Oba},
  journal = {The Astrophysical Journal Letters},
  year = {2026},
  month = oct,
  doi = {10.3847/2041-8213/aeaa28},
  url = {https://iopscience.iop.org/article/10.3847/2041-8213/aeaa28},
  note = {CC BY 4.0},
}

TY  - JOUR
TI  - A Forest of Emission Lines Observed by Sunrise III/SUSI above the Solar Limb
AU  - Juan Sebastián Castellanos Durán
AU  - Francisco A. Iglesias
AU  - Sami K. Solanki
AU  - Andreas Lagg
AU  - Ivan Milic
AU  - H. N. Smitha
AU  - Dušan Vukadinović
AU  - Tino L. Riethmüller
AU  - Achim Gandorfer
AU  - Alex Feller
AU  - Julian Blanco Rodríguez
AU  - David Orozco Suárez
AU  - Yukio Katsukawa
AU  - Johannes Hölken
AU  - Jose Carlos del Toro Iniesta
AU  - Shihao Rao
AU  - Mariano Sanchez Toledo
AU  - Kunal Singh
AU  - Pietro Bernasconi
AU  - Thomas Berkefeld
AU  - Alberto Álvarez-Herrero
AU  - Masahito Kubo
AU  - Valentín Martínez Pillet
AU  - Bianca Grauf
AU  - Michael Carpenter
AU  - Alexander Bell
AU  - Hanna Strecker
AU  - Azaymi L. Siu-Tapia
AU  - Pablo Santamarina Guerrero
AU  - Yusuke Kawabata
AU  - Takuma Matsumoto
AU  - Ryohtaroh T. Ishikawa
AU  - Edvarda Harnes
AU  - Takayoshi Oba
PY  - 2026
DA  - 2026/10/21
JO  - The Astrophysical Journal Letters
DO  - 10.3847/2041-8213/aeaa28
UR  - https://iopscience.iop.org/article/10.3847/2041-8213/aeaa28
AB  - We present off-limb spectroscopy using low-stray-light data from the Sunrise Spectropolarimeter and Imager (SUSI) on board the S unrise iii stratospheric solar observatory. A spatial scan with SUSI’s slit almost parallel to the local limb reached from within the solar disk to 6.5 Mm off-limb. The wavelength range spanned from 407.6 to 410.25 nm. We detected a total of 174 spectral lines in emission off-limb, a 2.5-fold increase over previous reports. Surprisingly, 122 of these lines begin to appear in emission already on the disk, although close to the limb. In addition, one-fifth of relatively prominent emission lines are due to rare-earth and heavy elements and molecules, where the absorption lines of these transitions are typically weak on-disc.
SN  - 2041-8205
SN  - 2041-8213
ER  -