blazhko effect in a sentence

• Many RR Lyraes, including RR Lyrae itself, show long period amplitude modulations, known as the Blazhko effect.
• Unusual periodic variations in the pulsation amplitude were also noticed, similar to the Blazhko effect in RR Lyrae variables.
• These include 133 RR Lyrae variables, of which about a third display the Blazhko effect of long-period modulation.
• Some RRab stars, include RR Lyrae itself, exhibit the Blazhko effect in which there is a conspicuous phase and amplitude modulation.
• This star belongs to a subset of RR Lyrae-type variables that show a characteristic behavior called the Blazhko effect, named after Russian astronomer Sergey Blazhko.
• Observational evidence based on Kepler ( spacecraft ) observations indicates much of the Blazhko effect's two-cycle light curve modulation is due to simple period-doubling.
• It is unique in that it is the only known Cepheid in the Milky Way to undergo periodic phase and amplitude changes, analogous to the Blazhko effect in RR Lyrae stars.
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