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A no-go theorem for exotic alternatives to black holes as LIGO/Virgo sources

Five of the ground-breaking gravitational wave detections by the LIGO/Virgo collaboration have been interpreted as black hole collisions forming a more massive black hole. It is hard to demonstrate conclusively that these objects are indeed black holes, and there is a lively debate on the intriguing possibility that other, more exotic alternatives could explain the observations. In an article to appear in Physical Review Letters, Gr@v members P.

Alan Alves

Full Name: Alan Jorge Alves do Carmo

Position: Post Doc

Degree: PhD




Main Research Interests

- Solar System Dynamics;
- Exoplanets;
- Celestial Mechanics;
- Dynamical Systems;
- Planetary Physcis;


From Planet-X to Planet Nine

Nuno Peixinho (Coimbra U.)
Event date
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Abstract: At the end of the 19th century the existence os a planet beyond Neptune was in debate. In 1930, Pluto was discovered, but too far from the prediction. In 1992 we found out that Pluto is actually a member of a huge belt of icy bodies orbiting beyond Neptune.