2 papers
gr-qc2013
Microlensed image centroid motions by an exotic lens object with negative convergence or negative mass
Takao Kitamura, Koji Izumi, Koki Nakajima +2
Gravitational lens models with negative convergence inspired by modified gravity theories, exotic matter and energy have been recently examined, in such a way that a static and sph…
gr-qc2013
Gravitational lensing shear by an exotic lens object with negative convergence or negative mass
Koji Izumi, Chisaki Hagiwara, Koki Nakajima +2
Gravitational lens models with negative convergence(surface mass density projected onto the lens plane) inspired by modified gravity theories, exotic matter and energy have been re…