XII Black Holes Workshop
The XII Black Holes workshop took place on 19-20 December 2020, at the University of Minho, in the Azurém Campus, Guimarães. As always, a fast paced, intense and stimulating meeting!
High Energy Physics News & Events
Cambridge School on Gravitational Waves
The Kavli-RISE Summer School on Gravitational Waves took place at the Centre for Theoretical Cosmology, University of Cambridge, on September 23-27, 2019. C. Herdeiro was one of the invited Lecturers.
UV completions of effective models explaining B-physics anomalies
Speaker
Werner Porod (Wurzburg U., Germany)
Event date
Venue
Room Sousa Pinto (DM)
Ends on
Event type
In recent years several anomalies have been observed in decays of B-mesons. We give first a brief overview on the experimental situation. It is well know that these anomalies can be explained by adding leptoquarks or extra vector-bosons to the SM particle content.
Pedro Cunha PhD defense
Pedro Cunha defended his PhD thesis with title "Shadows and gravitational lensing of Black Holes interacting with fundamental fields" on September 9th 2019, at IST-Lisbon. The panel, composed by Prof. Volker Perlick, Frederic Vincent, José Natário, Carlos Herdeiro (advisor) and José Lemos (president) unanimously attributed the highest classification of Approved with Distinction and Honour to an outstanding piece of work. Congratulations Pedro!
Gr@v students visit Brazil
Gr@v Ph.D. students Alexandre Pombo, João Oliveira and Jorge Delgado visited Belém, Brazil as members of the FunFiCO Marie Curie RISE project. Their visit coincided with the VII Amazonian Workshop on Gravity and analogue models, where they presented their work, and the Amazonian High Studies School in Theoretical Physics where they attended courses on Numerical Relativity and Gravitational Lensing.
Suppressing GR deviations with rotating black holes in PRL
In a paper published in Physical Review Letters, Gr@v researchers Pedro Cunha and Eugen Radu (in collaboration with Carlos Herdeiro from IST-Lisbon) provide a new insight on how spin could mask non-GR features in astrophysical black holes.
Axion superradiance in rotating neutron stars
Speaker
Jamie McDonald (T. U. Munich)
Event date
Venue
GAP room
Event type
In this talk I describe a new class of superradiant instabilities in which ultralight scalar fields extract rotational energy from neutron stars. The instability arises from the mixing of scalar and photon modes in the magnetic field of the neutron star which extract energy from the rotating magnetosphere.
Complementarity between gravitational waves and collider probes in extended Higgs sectors
Speaker
Maria Ramos (LIP - U. Minho)
Event date
Venue
GAP room
Event type
An extended scalar sector often emerges in models motivated by the electroweak hierarchy problem. In particular, a SM triplet is interesting because its decay is very constrained at the renormalizable level. Therefore, effective operators with a low cutoff make the triplet components decay promptly.
Warm Little Inflaton becomes Cold Dark Matter in Physical Review Letters
The article Warm Little Inflaton becomes Cold Dark Matter, by Gr@v members João G. Rosa and Luís B. Ventura has been published in Physical Review Letters.
The Higgs and cosmology
Speaker
Oleg Lebedev (Helsinki U.)
Event date
Venue
GAP room
Event type
I'll discuss the role of the Higgs boson as a probe of the hidden sector. The latter is of particular importance in cosmology as it may host dark matter and the inflaton. Due to its scalar nature, the Higgs boson provides a unique handle on properties of such Standard Model--singlet states.