# Is the Speed of Light Independent of the Velocity of the Source

@article{Brecher1977IsTS,
title={Is the Speed of Light Independent of the Velocity of the Source},
author={Kenneth Brecher},
journal={Physical Review Letters},
year={1977},
volume={39},
pages={1051-1054}
}
• K. Brecher
• Published 1977
• Physics
• Physical Review Letters
Recent observations of regularly pulsating x-ray sources in binary star systems are analyzed in the framework of the "emission" theory of light. Assuming that light emitted by a source moving at velocity $v$ with respect to an observer has a speed ${c}^{\ensuremath{'}}=c+kv$ in the observer's rest frame, we find that the arrival time of pulses from the binary x-ray sources implies $kl2\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}9}$. This appears to be the most direct and sensitive… Expand

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