[Todos] ATENCIÓN: seminario suspendido

[Nicolas Grandi]

Hola todos:

Lamentablemente por razones de fuerza mayor tuvimos que reprogramar el 
seminario para la semana que viene. Enviaremos el nuevo día y hora a la 
brevedad. Les pido disculpas por los múltiples emails.

Nicolás Grandi.


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> Hola a todos:
> *
> *
> Este es un recordatorio de que este 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
> *
> *
> *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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