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H. Bruntt, A. J. Penny, D. Stello, N. R. Evans, J. A. Eaton
TL;DR
This paper reports a significant increase in the pulsation amplitude of Polaris after a century of decline, based on 4.5 years of observational data from ground and satellite sources.
Contribution
It provides the first comprehensive long-term monitoring data showing a reversal in Polaris's pulsation amplitude trend.
Findings
Amplitude of Polaris's pulsation has increased significantly.
Long-term observational data confirms the amplitude change.
Results suggest possible changes in stellar pulsation behavior.
Abstract
For about 100 years the amplitude of the 4-day pulsation in Polaris has decreased. We present new results showing a significant increase in the amplitude based on 4.5 years of continuous monitoring from the ground and with two satellite missions.
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