CLEAN and multi-scale CLEAN for STIX in Solar Orbiter
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866916940516163584 |
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| author | Catalano, Miriana Volpara, Anna Massa, Paolo Piana, Michele Massone, Anna Maria |
| author_facet | Catalano, Miriana Volpara, Anna Massa, Paolo Piana, Michele Massone, Anna Maria |
| contents | CLEAN is a well-established deconvolution approach to Fourier imaging at both radio wavelwengths and hard X-ray energies. However, specifically for hard X-ray imaging, CLEAN suffers two significant drawbacks: a rather limited degree of automation, and a tendency to under-resolution. This paper introduces a multi-scale version of CLEAN specifically tailored to the reconstruction of images from measurements observed by the Spectrometer/Telescope for Imaging X-rays (STIX) on-board Solar Orbiter. Using synthetic STIX data, this study shows that multi-scale CLEAN may represent a reliable solution to the two previously mentioned CLEAN limitations. Further, this paper shows the performances of CLEAN and its multi-scale release in reconstructing experimental real scenarios characterized by complex emission morphologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_07167 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | CLEAN and multi-scale CLEAN for STIX in Solar Orbiter Catalano, Miriana Volpara, Anna Massa, Paolo Piana, Michele Massone, Anna Maria Solar and Stellar Astrophysics Instrumentation and Methods for Astrophysics Numerical Analysis 85-08 CLEAN is a well-established deconvolution approach to Fourier imaging at both radio wavelwengths and hard X-ray energies. However, specifically for hard X-ray imaging, CLEAN suffers two significant drawbacks: a rather limited degree of automation, and a tendency to under-resolution. This paper introduces a multi-scale version of CLEAN specifically tailored to the reconstruction of images from measurements observed by the Spectrometer/Telescope for Imaging X-rays (STIX) on-board Solar Orbiter. Using synthetic STIX data, this study shows that multi-scale CLEAN may represent a reliable solution to the two previously mentioned CLEAN limitations. Further, this paper shows the performances of CLEAN and its multi-scale release in reconstructing experimental real scenarios characterized by complex emission morphologies. |
| title | CLEAN and multi-scale CLEAN for STIX in Solar Orbiter |
| topic | Solar and Stellar Astrophysics Instrumentation and Methods for Astrophysics Numerical Analysis 85-08 |
| url | https://arxiv.org/abs/2509.07167 |