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The Blazhko Effect in RR Lyrae stars: Strong observational support for the oblique pulsator model in three stars

The MACHO Collaboration·C. Alcock·D. R. Alves·A. Becker·D. P. Bennett·K. H. Cook·K. C. Freeman·K. Griest·D. W. Kurtz·M. J. Lehner·S. L. Marshall·D. Minniti·B. A. Peterson·M. R. Pratt·P. J. Quinn·A. W. Rodgers·W. Sutherland·A. Tomaney·T. Vandehei·D. L. Welch
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Abstract

Using the novel data set of the MACHO project, we show that three ``Blazhko Effect'' RR Lyrae stars show nearly-pure amplitude modulation of a single pulsation mode. This is strong observational evidence that the ``Oblique Pulsator Model'' is the correct solution to this 90-year-old problem.

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The MACHO Collaboration, C. Alcock, D. R. Alves, A. Becker, D. P. Bennett, K. H. Cook, K. C. Freeman, K. Griest, D. W. Kurtz, M. J. Lehner, S. L. Marshall, D. Minniti, B. A. Peterson, M. R. Pratt, P. J. Quinn, A. W. Rodgers, W. Sutherland, A. Tomaney, T. Vandehei, D. L. Welch. 1998-08-19. The Blazhko Effect in RR Lyrae stars: Strong observational support for the oblique pulsator model in three stars. https://arxiv.org/abs/astro-ph/9808190

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