title: Strange nonchaotic stars.
abstract: The unprecedented light curves of the Kepler space telescope document how the brightness of some stars pulsates at primary and secondary frequencies whose ratios are near the golden mean, the most irrational number. A nonlinear dynamical system driven by an irrational ratio of frequencies generically exhibits a strange but nonchaotic attractor. For Kepler's "golden" stars, we present evidence of the first observation of strange nonchaotic dynamics in nature outside the laboratory. This discovery could aid the classification and detailed modeling of variable stars.
authors.affiliation: Department of Physics and Astronomy, University of Hawai'i at Mānoa, Honolulu, Hawai'i 96822, USA and Physics Department, The College of Wooster, Wooster, Ohio 44691, USA.
authors.forename: John F
authors.initials: JF
authors.lastname: Lindner
authors.affiliation: Department of Physics and Astronomy, University of Hawai'i at Mānoa, Honolulu, Hawai'i 96822, USA.
authors.forename: Vivek
authors.initials: V
authors.lastname: Kohar
authors.affiliation: Department of Physics and Astronomy, University of Hawai'i at Mānoa, Honolulu, Hawai'i 96822, USA.
authors.forename: Behnam
authors.initials: B
authors.lastname: Kia
authors.affiliation: Institute for Data Analysis, Luiter Straße 21b, 47506 Neukirchen-Vluyn, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Hippke
authors.affiliation: Department of Physics and Astronomy, University of Hawai'i at Mānoa, Honolulu, Hawai'i 96822, USA.
authors.forename: John G
authors.initials: JG
authors.lastname: Learned
authors.affiliation: Department of Physics and Astronomy, University of Hawai'i at Mānoa, Honolulu, Hawai'i 96822, USA.
authors.forename: William L
authors.initials: WL
authors.lastname: Ditto