## Deflection Angle of Photons through Dark Matter by Black Holes and Wormholes Using Gauss–Bonnet Theorem

Werner method can be used on any asymptotically flat Riemannian optical geometry of compact objects in a dark-matter medium.

Werner method can be used on any asymptotically flat Riemannian optical geometry of compact objects in a dark-matter medium.

We investigate the possibility that the Newtonian potential becomes progressively Harmonic when distances increases, as suggested in the Friedman’equations. Transition between the two potentials is describe by the forces of Darboux. Model doesn’t need dark matter or dark energy, allows to conserve energy and angular momentum and leads to flat curve...

We investigate the possibility that the Newtonian potential becomes progressively Harmonic when distances increases, as suggested in the Friedman’equations. Transition between the two potentials is describe by the forces of Darboux. Model doesn’t need dark matter or dark energy, allows to conserve energy and angular momentum and leads to flat curve...

We investigate the possibility that the Newtonian potential becomes progressively Harmonic when distances increases, as suggested in the Friedman’equations. Transition between the two potentials is describe by the forces of Darboux. Model doesn’t need dark matter or dark energy, allows to conserve energy and angular momentum and leads to flat curve...

We present the first measurement of cross-correlation between the lensing potential, reconstructed from cosmic microwave background (CMB) $\textit{polarization}$ data, and the cosmic shear field from galaxy shapes. This measurement is made using data from the POLARBEAR CMB experiment and the Subaru Hyper Suprime-Cam (HSC) survey. By analyzing an 11...

We present the first measurement of cross-correlation between the lensing potential, reconstructed from cosmic microwave background (CMB) $\textit{polarization}$ data, and the cosmic shear field from galaxy shapes. This measurement is made using data from the POLARBEAR CMB experiment and the Subaru Hyper Suprime-Cam (HSC) survey. By analyzing an 11...

Gravity like the deflection of the light produced by the sun, the perihelion precession, Black Holes and the Cosmological Inflation.

Gravity like the deflection of the light produced by the sun, the perihelion precession, Black Holes and the Cosmological Inflation.

Future gravitational-wave observations will enable unprecedented and unique science in extreme gravity and fundamental physics answering questions about the nature of dynamical spacetimes, the nature of dark matter and the nature of compact objects.

This Astro-2020 White Paper deals with what we might learn from future gravitational wave observations about the early universe phase transitions and their energy scales, primordial black holes, Hubble parameter, dark matter and dark energy, modified theories of gravity and extra dimensions.