Phase velocity and light bending in a gravitational potential
نویسندگان
چکیده
منابع مشابه
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A photon emitted near a compact object at an angle α with respect to the radial direction escapes to infinity at a different angle ψ > α. This bending of light is caused by a strong gravitational field. We show that, in a Schwarzschild metric, the effect is described by 1− cosα = (1 − cosψ)(1− rg/R) where R/rg is the emission radius in Schwarzschild units. The formula is approximate and it appl...
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ژورنال
عنوان ژورنال: European Journal of Physics
سال: 2018
ISSN: 0143-0807,1361-6404
DOI: 10.1088/1361-6404/aacaac