HIGHLIGHTS
- who: Naoki Tsukamoto from the Department of General Science and Education, National Institute of Technology, Hachinohe College, Aomori, Japan have published the research: Gravitational lensing by using the 0th order of affine perturbation series of the deflection angle of a ray near a photon sphere, in the Journal: Eur. Phys. J. C
- what: The authors investigate gravitational lensing by using 0th order affine perturbation series of the deflection angle in a general asymptoticallyflat static and spherical symmetric spacetime with the photon sphere. By comparing observables by using the deflection angles the authors show that the . . .
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