The O-C Diagram of the Pulsating White Dwarf EC20058-5234

Details The O-C Diagram of the Pulsating White Dwarf EC20058-5234 The O-C Diagram of the Pulsating White Dwarf EC20058-5234

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21743222d&link_type=abstract

American Astronomical Society, AAS Meeting #217, #432.22; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We present 13 years of timing measurements of the pulsating DB WD EC20058-5234. These measurements were taken in an attempt to measure the plasmon neutrino emission rate from this star. We find correlated sinusoidal variations in the O-Cs of the four highest amplitude modes. These variations are not due to a planetary companion. We present measurements of the plasmon neutrino emission rate and speculate as to the cause of the sinusoidal O-C variations.

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