Sentences with phrase «term magnetic cycle»

A larger sixth planet, closer in mass to Saturn, also appears significantly in the data at a greater distance from HD 10180, but the study's authors note that the signal could be caused by a long - term magnetic cycle on the star rather than the tug of an orbiting planet.

Not exact matches

Starting in the 1960's at the Mt. Wilson Observatory O.C. Wilson (sic) began a long - term study of magnetic cycles in cool stars using as his observational indicator the variable emission flux of the H and K resonance lines of ionized calcium whose appearance in emission is characteristic of stellar chromospheres.

Short term solar cycles of the 27 day rotation periods, due to the polarity shifts in magnetic flux changes in the solar wind, The moon has a North / South declinational component as part of it's set of orbital parameters.

http://arxiv.org/abs/1009.0784v1 Long - term Evolution of Sunspot Magnetic Fields Independent of the normal solar cycle, a decrease in the sunspot magnetic field strength has been observed using the Zeeman - split 1564.8 nm Fe I spectral line at the NSO Kitt Peak McMath - Pierce teMagnetic Fields Independent of the normal solar cycle, a decrease in the sunspot magnetic field strength has been observed using the Zeeman - split 1564.8 nm Fe I spectral line at the NSO Kitt Peak McMath - Pierce temagnetic field strength has been observed using the Zeeman - split 1564.8 nm Fe I spectral line at the NSO Kitt Peak McMath - Pierce telescope.

And the much longer term ice - age and magnetic cycles may well be regulated by the Earth's precessional cycle (and this is not simply an effect of «geometry»).

My feeling on the latter, is that solar magnetic cycles affect far - UV / stratospheric / jetstream patterns and the long - term heat storage of the oceans; and that the former shorter cycles may be a stochastic resonance phenomenon entrained in the long term pattern.