[Todos] Seminario el miércoles 24

[Nicolas Grandi]

Hola a todos:
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El próximo miércoles 24/8 recibiremos la visita del Prof. Juan Calderón 
Bustillo, de la Universidad de Santiago de Compostela, quien es miembro 
del proyecto LIGO, cuyos fundadores recibieron el premio Nobel de física 
2017 por su descubrimiento de las ondas gravitacionales. Dictará el 
siguiente seminario en el IFLP a las 15:30, al que están todos 
cordialmente invitados
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*Title: */Black holes or boson stars? The challenge of interpreting 
gravitational-wave signals from high-mass compact mergers./

*Abstract:* /Gravitational waves provide us with an unique opportunity 
to observe ultra compact objects, such as black-holes, in a highly 
dynamical state, as pairs of these form and merge. This allows us to 
study the dynamics of space-time in the strong gravity regime and, in 
particular, search for subtle signatures of, nowadays theoretical, 
exotic objects known as black-hole mimickers. Among these, so-called 
boson stars are especially appealing due their simplicity and the fact 
that the particles building them up, known as ultralight bosons, are 
widely considered strong candidates to form (part of) what we know as 
Dark Matter. In this seminar I will describe ongoing efforts to produce 
catalogs of numerically simulated gravitational-wave signals from 
boson-star mergers that can be compared to existing LIGO-Virgo data in 
order to look for such objects, together with the corresponding data 
analysis techniques. In particular, I will focus on the qualitative 
discussion of the phenomenology of boson-star mergers, on the analysis 
of several LIGO-Virgo signals under this exotic hypothesis vs. the 
canonical black-hole merger one and on the estimation of the putative 
boson-star parameters, particularly focusing on the mass of the 
underlying bosonic particle./

Esperando verlos en el seminario,

Nicolás Grandi.
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