Searchable solar feature catalogues

Valentina V. Zharkova (1) , Jean Aboudarham (2, 3, 4) , Sergey I. Zharkov (1) , Stanley S. Ipson (1) , Ali K. Benkhalil (1) , Nicolas Fuller (2, 3, 4)

1 Department of Cybernetics
2 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
3 Ingénieurs, Techniciens et Administratifs
4 Physique solaire

The searchable Solar Feature Catalogues (SFCs) are developed from digitized solar images using automated pattern recognition techniques. The techniques were applied for the detection of sunspots, active regions, filaments and line-of-sight magnetic neutral lines in automatically standardized full disk solar images in Ca II K1, Ca II K3 and Ha lines taken at the Paris-Meudon Observatory and white light images and magnetograms from SOHO/MDI. The results of the automated recognition were verified with manual synoptic maps and available statistical data that revealed good detection accuracy. Based on the recognized parameters, a structured database of Solar Feature Catalogues was built on a MySQL server for every feature and published with various pre-designed search pages on the Bradford University web site http://www.cyber.brad.ac.uk/egso/SFC/. The SFCs with nine year coverage (1996-2004) is to be used for deeper investigation of the feature classification and solar activity forecast.

Domaines: Astrophysique [astro-ph]

Valentina V. Zharkova, Jean Aboudarham, Sergey I. Zharkov, Stanley S. Ipson, Ali K. Benkhalil, et al.. Searchable solar feature catalogues. Advances in Space Research, 2005, 36, pp.1604-1612. ⟨10.1016/j.asr.2005.02.090⟩. ⟨hal-03732741⟩