Autor:	Toufik E. Abdelatif, Abdanour Irbah, Eric Fossat, Christian Delmas, Francis Laclare, Rachid Moussaoui, Julien Borgnino
Rok vydání:	2000
Předmět:	Physics business.industry Spectral density Astronomy and Astrophysics Astrolabe Geodesy Window function Solar cycle Optics Space and Planetary Science Observatory Range (statistics) Harmonic Deconvolution business
Zdroj:	Solar Physics. 195:433-437
ISSN:	0038-0938
Popis:	Solar diameter measurements performed at Calern Observatory astrolabe during more than two solar cycles show variations at various time scales in a broad range. Due to seasonal effects and instrumental characteristics, the recorded data are not sampled uniformly and present some gaps during these years. This time series has been analyzed by means of a deconvolution of the window function, as an alternative method to the standard least square fits of harmonic functions. The results show an extremely important improvement of the power spectrum. Harmonic terms already found by other authors are confirmed but new frequencies are also revealed by this analysis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7eafae98a7c8e1d1b32e91b57309f32e https://doi.org/10.1023/a:1005294816363 Zobrazit plný text záznamu Full text from SpringerLink