Bonjour
J'aimerai avoir votre avis sur l'article de Valery Kotov dont voici le résumé :
ABSTRACT
Doppler observations of the Sun performed at the Crimean Astrophysical Observatory from 1974 through 2018 show that our star pulsates with the two periods, 9600.606(12) s and 9597.924(13) s. But while the first pulsation wasobserved during years of the enhanced amplitude only, the second one – over nearly 45 years, with a sixfold amplitudeenhancement in 2018 (as compared to the average amplitude of the total 45-year dataset). The characteristic timescaleof the amplitude variations, 12(1) years, coincides within the error limits with both the length of the Schwabe 11-yearcycle and the sidereal period of Jupiter, 12 years. It also seems puzzling that(a)both periods happened to be nearthe 9th daily harmonic of the mean solar day, and(b)the beating timescale of these two periods, 398 days, coincideswithin the error limits with the orbital period of Jupiter, 399 days (synodic). Several evidences for a cosmic nature ofthe first pulsation are presented, but the true physical cause of both pulsations is not yet understood.
Key words:Sun, photosphere, pulsations, helioseismology, 11-year cycle, Jupiter
https://astrophysicatauricum.org/ind...cle/view/60/46
Pour ceux d'entre vous qui auraient raté la nouvelle, Kotov est décédé récemment.
https://forums.futura-sciences.com/h...43-2025-a.html
Cordialement
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