The Possible Orbital Decay and Transit Timing Variations of the Planet WASP-43b

Motivated by the previously reported high orbital decay rate of the planet WASP-43b, eight newly transit light curves are obtained and presented. Together with other data in literature, we perform a self-consistent timing analysis with data covering a timescale of 1849 epochs. The results give an or...

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Bibliographic Details
Published in:arXiv.org 2015-11
Main Authors: Jiang, Ing-Guey, Chien-Yo Lai, Savushkin, Alexander, Mkrtichian, David, Antonyuk, Kirill, Griv, Evgeny, He-Feng, Hsieh, Li-Chin, Yeh
Format: Article
Language:English
Subjects:
Decay rate
Dissipation factor
Frequency analysis
Light curve
Matter & antimatter
Orbit decay
Transit
Online Access:Get full text
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Summary:Motivated by the previously reported high orbital decay rate of the planet WASP-43b, eight newly transit light curves are obtained and presented. Together with other data in literature, we perform a self-consistent timing analysis with data covering a timescale of 1849 epochs. The results give an orbital decay rate dP/dt = -0.02890795\pm 0.00772547 sec/year, which is one order smaller than previous values. This slow decay rate corresponds to a normally assumed theoretical value of stellar tidal dissipation factor. In addition, through the frequency analysis, the transit timing variations presented here are unlikely to be periodic, but could be signals of a slow orbital decay.
ISSN:2331-8422
DOI:10.48550/arxiv.1511.00768