Charla de Jacobo Varela: «Synergies in plasma physics: exoplanet habitability and radio emission» 🗓

Charla

Lecturer:  Jacobo Varela Rodríguez (Universidad Carlos III, Madrid)

Abstract: This presentation discusses synergies between different plasma physics fields, emphasising in the astrophysical plasmas. In particular, exoplanet habitability is a hot topic in the scientific community, devoted to developing new observational as well as numerical models dedicated to analyzing the exoplanet environment. In the last decade, MHD models are applied to study the magnetic field generation by dynamo effect in the convective layer of stars, the production of stellar winds as well as the interaction of the stellar wind with planetary magnetospheres. We show the last advances in the modelling efforts to analysis the effect of the space weather conditions on the exoplanet habitability, that is to say the interaction of the stellar wind and the exoplanet magnetosphere. In addition, the radio emission from exoplanet magnetospheres is numerically evaluated identifying trends regarding the space weather properties

Jueves 19 mayo, 12 horas, seminario de Física Nuclear

On-line (Zoom)

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«La física del Universo», cursos extraordinarios de la Universidad de Zaragoza en Jaca

 

Curso extraordinario organizado por el CAPA del 18/07/2022 al 20/07/2022 y coordinado por  Theopisti Dafni y Eduardo Follana Adín.
Objetivos: 

El reto con el que se encuentra actualmente la física fundamental, tras el descubrimiento del Higgs, que completa el modelo estándar, es la física más allá de dicho modelo, necesaria para entender y describir la
energía oscura, la materia oscura, y las oscilaciones de neutrinos. Cada vez más la sociedad se interesa por los avances en la física fundamental y la tecnología que apoya sus experimentos. El objetivo del curso es dar una pequeña introducción de temas relacionados con la Física del Universo, proporcionando los conceptos básicos y el estado actual de nuestros conocimientos. Parte de los objetivos consisten en difundir los conceptos fundamentales, para que éstos puedan incorporarse a programas docentes de diferentes niveles educativos preuniversitarios.

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Charla de Tomislav Terzić : «Measuring Lorentz invariance violation with Cherenkov telescopes – from observations to setting constraints»

Cherenkov telescopes are instruments optimized for detection of very high energy (VHE, E > 100 GeV) gamma rays from astrophysics sources. They play a crucial role in testing possible consequences of Quantum Gravity (QG), such as violation or deformation of Lorentz symmetry. In both cases, the photon dispersion relation is modified, making the photon group velocity energy dependent, and possibly modifying kinematics and dynamics of electromagnetic interactions. These tiny effects are vastly below the sensitivity of present-day laboratories. However, if real, they could be measured using VHE gamma rays of astrophysical origin. Cosmological distances that they cross serve as a natural amplifier for the QG effects. While no deviations from the special relativistic predictions have been detected, strong constraints have been set on modified photon dispersion relations.
In this session we will explain the process of testing implications of modified photon dispersion relations on VHE gamma rays using Cherenkov telescopes. We will cover different stages from observations, Cherenkov telescopes’ data analysis, statistical methods employed, and finally setting constraints on the QG energy scale.

Jueves 12 mayo, 12 horas, seminario de Física Nuclear, on-line  (Google Meet)

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