Research Article

Closing a Window for Massive Photons

Figure 1

Numerical results for the angular deviation as a function of . The horizontal lines represent a conservative range for the measured gravitational lensing by the sun [25]. Please note that this range can be largely improved by measurements using radio astronomy [24, 26]. The red line is the numerical value for both configurations of . The black dotted line is the analytic estimate (9). The vertical line is the deduced minimal value for given in (12).
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