The size of the universe

The size of the universe

The size of the universe Cosmic acceleration is telling us that Newton's gravitational law is different from the one we learn in school. I will show how this could imply that our universe is smaller than what we thought. This explains why vacuum energy does not...
High energy neutrinos from active galactic nuclei

High energy neutrinos from active galactic nuclei

High energy neutrinos from active galactic nuclei Despite intense inquiry, the sources at the origin of the high-energy neutrinos revealed by IceCube are still unknown. The potential correlation of an IceCube event with a flaring gamma-ray source has recently focused...
Electromagnetic counterpart of gravitational wave events

Electromagnetic counterpart of gravitational wave events

Electromagnetic counterpart of gravitational wave events In the last few years, the gravitational wave (GW) interferometers LIGO and Virgo proved their ability to detect compact mergers and, with the spectacular case of GW 170817. Thanks to them, it is clear that...