Mathematics – Logic
Scientific paper
Feb 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997an....318..121k&link_type=abstract
Astronomische Nachrichten, vol. 318, no. 2, p. 121.
Mathematics
Logic
2
Scientific paper
Pulsation of the Sun with a period of P0 ~ 160 min discovered about two decades ago, is still waiting explanation. In view of the hypothesis about its cosmological origin, and attempting to find signature of this \p\ periodicity among other (short--period variable) stars, the pulsation frequencies of \del stars are subjected to specific analysis. With a confidence level ~ 3.8sigma it is found that the frequency nu_ {0} be the most ``resonant'' one for the total sample of 318 pulsating stars of del type (the most commensurable, or ``synchronizing'', period for all these stars occurs to be 162 \pm 4 min). We conjecture that a) the p \ oscillation might be connected with periodic fluctuations of gravity field (metrics), and b) the primary excitation mechanism of pulsations of del stars, reflected by this ``ubiquitous'' p \ resonance, must be attributed perhaps to superfast rotation of their inner cores (their rates tend to be in near--resonance with the ``universal'' \nu0$ frequency). The arguments are given favouring a cosmological nature of the \p\ oscillation.
Kotov V. Jr. S.
Kotov Valerii A.
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