New Bulgarian-Austrian project 'Joint observations and investigations of solar chromospheric and coronal activity'

Rositsa Miteva; Werner Pötzi; Astrid Veronig; Kamen Kozarev; Momchil Dechev; Robert Jarolim; Mohamed Nedal; Nikola Petrov; Stefan Purkhart; Christoph Schirninger; Tsvetan Tsvetkov; Yovelina Zinkova

arXiv · 2512.14296

New Bulgarian-Austrian project 'Joint observations and investigations of solar chromospheric and coronal activity'

Rositsa Miteva·Werner Pötzi·Astrid Veronig·Kamen Kozarev·Momchil Dechev·Robert Jarolim·Mohamed Nedal·Nikola Petrov·Stefan Purkhart·Christoph Schirninger·Tsvetan Tsvetkov·Yovelina Zinkova

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Abstract

We present the bilateral collaboration between Bulgarian and Austrian solar and space weather researchers on the topic of chromospheric and coronal activity. This new project will focus, on one hand, on the technical setup and calibration of the new Rozhen chromospheric telescope at the National Astronomical Observatory (NAO) by means of establishing optimal observational programs for different quiet-Sun and activity phenomena, automating the data collection and storage, implementing machine/deep learning models for feature recognition. The second aim is to carry out joint scientific analyses of solar phenomena using observations from ground-based instruments in both countries, and supplementary spacecraft data. The successful implementation of solar monitoring at NAO-Rozhen will facilitate the overall visibility of the Bulgarian instrument and generate interest towards astronomy and solar physics not only for PhD students and young scientists but also for the general public.

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Rositsa Miteva, Werner Pötzi, Astrid Veronig, Kamen Kozarev, Momchil Dechev, Robert Jarolim, Mohamed Nedal, Nikola Petrov, Stefan Purkhart, Christoph Schirninger, Tsvetan Tsvetkov, Yovelina Zinkova. 2025-12-16. New Bulgarian-Austrian project 'Joint observations and investigations of solar chromospheric and coronal activity'. https://arxiv.org/abs/2512.14296

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