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...
Highly Magnified Cosmological Sources in Galaxy Cluster Lenses

Highly Magnified Cosmological Sources in Galaxy Cluster Lenses

Highly Magnified Cosmological Sources in Galaxy Cluster Lenses Individual luminous stars or compact star-forming complexes in distant galaxies have been observed by the Hubble Space Telescope in the field of strong lensing massive galaxy clusters. These sources are...
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...