Synthesizing Sun-as-a-star flare spectra from high-resolution solar observations
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908518840270848 |
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| author | De Wilde, M. Pietrow, A. G. M. Druett, M. K. Yabar, A. Pastor Koza, J. Kontogiannis, I. Andriienko, O. Berlicki, A. Brunvoll, A. R. Rodríguez, J. de la Cruz Faber, J. T. Joshi, R. Kuridze, D. Nóbrega-Siverio, D. van der Voort, L. H. M. Rouppe Rybák, J. Scullion, E. Silva, A. M. Vashalomidze, Z. Arévalo, A. Vicente Wiśniewska, A. Yadav, R. Zaqarashvili, T. V. Zbinden, J. Øyre, E. S. |
| author_facet | De Wilde, M. Pietrow, A. G. M. Druett, M. K. Yabar, A. Pastor Koza, J. Kontogiannis, I. Andriienko, O. Berlicki, A. Brunvoll, A. R. Rodríguez, J. de la Cruz Faber, J. T. Joshi, R. Kuridze, D. Nóbrega-Siverio, D. van der Voort, L. H. M. Rouppe Rybák, J. Scullion, E. Silva, A. M. Vashalomidze, Z. Arévalo, A. Vicente Wiśniewska, A. Yadav, R. Zaqarashvili, T. V. Zbinden, J. Øyre, E. S. |
| contents | Spatially resolved observations of the Sun and the astronomical sample size of stellar bodies are the respective key strengths of solar and stellar observations. However, the large difference in object brightness between the Sun and other stars has led to distinctly different instrumentation and methodologies between the two fields. We produce and analyze synthetic full-disk spectra derived from 19 small area field-of-view optical observations of solar flares acquired by the Swedish 1-m Solar Telescope (SST) between 2011 and 2024. These are used to investigate what can and cannot be inferred about physical processes on the Sun from Sun-as-a-star observations. The recently released Numerical Empirical Sun-as-a-Star Integrator (NESSI) code provides synthetic full-disk integrated spectral line emission based on smaller field-of-view input, accounting for center-to-limb variations and differential rotation. We use this code to generate pseudo-Sun-as-a-star spectra from the SST observations. ... |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_07967 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Synthesizing Sun-as-a-star flare spectra from high-resolution solar observations De Wilde, M. Pietrow, A. G. M. Druett, M. K. Yabar, A. Pastor Koza, J. Kontogiannis, I. Andriienko, O. Berlicki, A. Brunvoll, A. R. Rodríguez, J. de la Cruz Faber, J. T. Joshi, R. Kuridze, D. Nóbrega-Siverio, D. van der Voort, L. H. M. Rouppe Rybák, J. Scullion, E. Silva, A. M. Vashalomidze, Z. Arévalo, A. Vicente Wiśniewska, A. Yadav, R. Zaqarashvili, T. V. Zbinden, J. Øyre, E. S. Solar and Stellar Astrophysics Spatially resolved observations of the Sun and the astronomical sample size of stellar bodies are the respective key strengths of solar and stellar observations. However, the large difference in object brightness between the Sun and other stars has led to distinctly different instrumentation and methodologies between the two fields. We produce and analyze synthetic full-disk spectra derived from 19 small area field-of-view optical observations of solar flares acquired by the Swedish 1-m Solar Telescope (SST) between 2011 and 2024. These are used to investigate what can and cannot be inferred about physical processes on the Sun from Sun-as-a-star observations. The recently released Numerical Empirical Sun-as-a-Star Integrator (NESSI) code provides synthetic full-disk integrated spectral line emission based on smaller field-of-view input, accounting for center-to-limb variations and differential rotation. We use this code to generate pseudo-Sun-as-a-star spectra from the SST observations. ... |
| title | Synthesizing Sun-as-a-star flare spectra from high-resolution solar observations |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2507.07967 |