HR 6819 was reported in Rivinius et al. (2020) to be a triple system composed of ... more A dormant black hole inside HR 6819»
On June 30th, 2021, the European Strategy Forum on Research Infrastructures (ESFRI) decided to include ... more Einstein Telescope on roadmap of the European Strategy Forum on Research Infrastructure»
Intermediate-mass black holes (IMBHs) constitute a class of black holes with masses in the range 100-100 ... more Intermediate mass black holes and the case of GW190521»
The LIGO Scientific Collaboration and the Virgo collaboration identify a second gravitational wave event in the ... more GRAVITATIONAL WAVES DETECTED FROM SECOND PAIR OF COLLIDING BLACK HOLES »
UVSat is a scientific astronomical observatory mini-satellite carrying a telescopes observing in the ultraviolet (200-300nm,UV ... more Astronomical Observatory Ultraviolet Satellite - UVSat»
The discovery of ultraluminous X-ray sources (ULX) and the growing evidence that they contain compact objects ... more The slimming effect of advection on black-hole accretion flows»
Ultraluminous X–ray sources (ULXs) have apparent luminosities above 1039 erg/s, which corresponds to the ... more Ultraluminous X-ray pulsar»
For the first time, scientists have observed ripples in the fabric of spacetime - gravitational waves ... more First direct detection of gravitational waves»
RE J1034+396 (z = 0.0433), as a Narrow Line Seyfert 1 galaxy (NLS1), is the ... more The mass of the black hole in RE J1034+396»