Zobrazeno 1 - 10
of 189
pro vyhledávání: '"Denker, Carsten"'
Autor:
Diercke, Andrea, Jarolim, Robert, Kuckein, Christoph, Manrique, Sergio J. González, Ziener, Marco, Veronig, Astrid M., Denker, Carsten, Pötzi, Werner, Podladchikova, Tatiana, Pevtsov, Alexei A.
Publikováno v:
A&A 686, A213 (2024)
Filaments are omnipresent features in the solar atmosphere. Their location, properties and time evolution can provide information about changes in solar activity and assist the operational space weather forecast. Therefore, filaments have to be ident
Externí odkaz:
http://arxiv.org/abs/2402.15407
Autor:
Denker, Carsten, Verma, Meetu, Pietrow, Alexander G. M., Kontogiannis, Ioannis, Kamlah, Robert
Publikováno v:
Research Notes of the AAS, Volume 7, Number 10 (2023)
High-resolution solar spectroscopy provides a wealth of information from photospheric and chromospheric spectral lines. However, the volume of data easily exceeds hundreds of millions of spectra on a single observation day. Therefore, methods are nee
Externí odkaz:
http://arxiv.org/abs/2310.16747
Autor:
Dineva, Ekaterina, Pearson, Jeniveve, Ilyin, Ilia, Verma, Meetu, Diercke, Andrea, Strassmeier, Klaus G., Denker, Carsten
The strong chromospheric absorption lines Ca H & K are tightly connected to stellar surface magnetic fields. Only for the Sun, spectral activity indices can be related to evolving magnetic features on the solar disk. The Solar Disk-Integrated (SDI) t
Externí odkaz:
http://arxiv.org/abs/2206.06076
Autor:
Verma, Meetu, Matijevič, Gal, Denker, Carsten, Diercke, Andrea, Dineva, Ekaterina, Balthasar, Horst, Kamlah, Robert, Kontogiannis, Ioannis, Kuckein, Christoph, Pal, Partha S.
The H{\alpha} spectral line is a well-studied absorption line revealing properties of the highly structured and dynamic solar chromosphere. Typical features with distinct spectral signatures in H{\alpha} include filaments and prominences, bright acti
Externí odkaz:
http://arxiv.org/abs/2011.13214
Ground-based solar observations are severely affected by Earth's turbulent atmosphere. As a consequence, observed image quality and prevailing seeing conditions are closely related. Partial correction of image degradation is nowadays provided in real
Externí odkaz:
http://arxiv.org/abs/2011.04346
Autor:
Verma, Meetu, Denker, Carsten
Publikováno v:
J. Astron. Telesc. Instrum. Syst. 6(1), 015001 (2020)
Imaging spectropolarimetry is an important observational tool in solar physics because of fast-cadence spectral scans with high-spectral resolution, large field-of-view, and its inherent suitability for post-facto image restoration. Fabry-P\'erot eta
Externí odkaz:
http://arxiv.org/abs/2001.01203
Autor:
Dineva, Ekaterina, Verma, Meetu, Manrique, Sergio Javier González, Schwartz, Pavol, Denker, Carsten
High-resolution spectroscopy of strong chromospheric absorption lines delivers nowadays several millions of spectra per observing day, when using fast scanning devices to cover large regions on the solar surface. Therefore, fast and robust inversion
Externí odkaz:
http://arxiv.org/abs/1912.10476
Akademický článek
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Autor:
Diercke, Andrea, Denker, Carsten
Polar crown filaments form above the polarity inversion line between the old magnetic flux of the previous cycle and the new magnetic flux of the current cycle. Studying their appearance and their properties can lead to a better understanding of the
Externí odkaz:
http://arxiv.org/abs/1910.07943
Publikováno v:
A&A 629, A48 (2019)
In this study, we analyzed a filament system, which expanded between moving magnetic features (MMFs) of a decaying sunspot and opposite flux outside of the active region from the nearby quiet-Sun network. This configuration deviated from a classical
Externí odkaz:
http://arxiv.org/abs/1908.01510