Aula
Seminario Severo Ochoa
El Programa de Seminarios Severo Ochoa es una iniciativa encaminada a aumentar la visibilidad del programa de Visitantes Senior Severo Ochoa recibidos en el IAC y contribuir a la formación profesional del personal predoctoral y postdoctoral del IAC.
Las conferencias previstas en el programa tratan de fomentar la colaboración entre los diferentes grupos de investigación del IAC y los liderados por los profesores visitantes en sus propias instituciones. El programa está abierto a la participación de todos los investigadores interesados, no sólo de los vinculados directamente al proyecto SO.
Se anima a todos los profesores visitantes Severo Ochoa a presentar el tema de investigación objeto de sus colaboraciones.
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The formation of Milky Way-mass galactic disc structure in cosmological simulationsRecent years have seen impressive development in cosmological simulations for spiral disc galaxies like the Milky Way. I present a suite of high-resolution magneto-hydrodynamic simulations that include many physical processes relevant for galaxy formation, including star formation, stellar evolution and feedback, active galactic nuclei and magneticDr.Robert Grand21 Abr 2022 - 10:30 Europe/LondonAnterioresVídeo de la charla
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Magnetic Flux, Heating, & Flaring: Clues from the Sun for Other Stars & SystemsOn the Sun, the presence of magnetic flux at the photosphere is closely linked to (1) steady heating of the overlying atmosphere and (2) transient brightenings, the largest of which are flares. I will discuss statistical properties of both phenomena, with an emphasis on aspects of each that might apply to other astrophysical objects, such as otherProf.Brian Welsch
Aula
5 Abr 2022 - 12:30 Europe/LondonAnterioresVídeo de la charla -
Dynamos, the drivers of solar and stellar activityFollowing Cowling's anti-dynamo theorem of 1933, there was a long period during which the very existence of dynamos was unclear. Even with the emergence of three dimensional simulations in the late 1980s, people were careful to distinguish true dynamos from just some sort of amplification. Meanwhile, we know of many examples of true dynamos - notProf.Axel Brandenburg
Online
27 Ene 2022 - 09:30 Europe/LondonAnterioresVídeo de la charla -
Galactic Globular Clusters: Why should we care about them?Galactic globular clusters have always been at the crossroad of several investigations in both Stellar and Galactic Astrophysics. For long time, they have been considered the prototypes of Simple Stellar Populations, and hence used for testing and calibrating stellar evolutionary models as well as population synthesis tools. Nowadays, after theDr.Santi Cassisi
Aula
14 Dic 2021 - 11:30 Europe/LondonAnterioresVídeo de la charla -
PLANETARY PIECES: PUTING THE CLUES TOGETHER USING WHITE DWARFSPlanetary systems have been found systematically orbiting main sequence stars and red giants. But the detection of planets per se during the white dwarf phase has been more elusive with only 3 systems. We have, however, ample indirect evidence of the existence of planetary debris around these systems in the form of material acreted onto the whiteDr.Eva Villaver
Aula 1
23 Nov 2021 - 11:30 Europe/LondonAnterioresVídeo de la charla -
Magnetic reconnection in partially ionized plasmasThe phenomenon of magnetic reconnection in a magnetized plasma has been a subject of numerous studies over the past several decades in a variety of contexts, from high energy astrophysics, to solar and space physics, to laboratory-based experiments. However, most magnetic reconnection studies have been devoted to exploring different collisionalityDr.Slava Lukin
Aula
28 Oct 2021 - 10:30 Europe/LondonAnterioresVídeo de la charla -
Using the Visible Spectral Reflectance Properties to Probe Aqueous Alteration in the Solar SystemDuring the past 50 years, we have witnessed humankind’s first good, detailed look at the planets in our known Solar System. All of these advances built upon Earth-based telescopic observations. We predict surface conditions on other Solar System bodies before spacecraft reach them for in situ study. The dominant type of asteroid identifiedDr.Faith Vilas
Aula
26 Oct 2021 - 10:30 Europe/LondonAnterioresVídeo de la charla -
The interplay between local and global properties in galaxiesWe summarize here some of the results reviewed recently by Sanchez (2020) and Sanchez et al. (2021), comprising the advances in the comprehension of galaxies in the nearby universe based on integral field spectroscopic galaxy surveys. We review our current knowledge of the spatially resolved spectroscopic properties of low-redshift star-formingDr.Sebastián F. Sánchez
Online
8 Jul 2021 - 10:30 Europe/LondonAnterioresVídeo de la charla -
The rotation of massive stars with and without compact companionsMassive stars are generally fast rotators, however, with significant dispersion. We discuss the hypothesis that all OB stars are all born with very similar spins, with slower and faster rotators being produced by close binary evolution. We review supporting evidence from recent observations of young and rich star clusters, from OB star surveys, andProf.Norbert Langer
Online
6 Jul 2021 - 12:30 Europe/LondonAnterioresVídeo de la charla -
Using Machine learning in interstellar mediumArtificial intelligence techniques are increasingly used in our daily lives. They also play an important role in science, including astrophysics. I am particularly interested in the use of machine learning regressors. I will present an overview of the current situation and some recent uses of these methods in the study of planetary nebulae or HIIDr.Christophe Morisset
Aula
22 Jun 2021 - 12:30 Europe/LondonAnterioresVídeo de la charla -
Reconstructing the history of the Milky Way and probing the dark matter nature in WEAVE and LSST eraAt present, our understanding of the formation history of the MW is limited due to the complexity of observing the imprints of accretion events and of reproducing them in numerical simulations. Moreover, though being the only galaxy, in which the Galactic potential can be probed in detail, the distribution of mass in the MW, and hence of the darkGuillaume Frederic Jean ClaudeThomas
Online
20 Mayo 2021 - 10:30 Europe/LondonAnterioresVídeo de la charla -
Constraints on Ultra-Light Dark Matter from Galactic Rotation CurvesBosonic ultra-light dark matter (ULDM) in the mass range m ~ $10^{-22} - 10^{-21} \rm eV$ has been invoked as a motivated candidate with new input for the small-scale `puzzles' of cold dark matter. Numerical simulations show that these models form cored density distributions at the center of galaxies ('solitons'). These works also found anProf.Diego Blas
Online
13 Mayo 2021 - 10:30 Europe/LondonAnterioresVídeo de la charla -
The evolutionary history of the Milky Way disk(s) and halo from Gaia colour-magnitude diagram fittingGaia has provided distances and photometry, and thus colour-magnitude diagrams in the absolute plane, for stars over a large volume in the Milky Way, encompassing significant fractions of the thin and thick disk, and halo. This has allowed us, for the first time, to derive unprecedentedly detailed star formation histories from direct modelling ofCarmenGallart Gallart
Online
22 Abr 2021 - 10:30 Europe/LondonAnterioresVídeo de la charla -
QUIJOTE: el estado de la instrumentación CMB en Canarias.Durante este seminario se hará un recorrido sobre la instrumentación dentro del proyecto QUIJOTE, desde de los instrumentos ya existentes y su problemática hasta el estado actual de los instrumentos de nueva generación y los posibles desarrollos a futuro.Pablo Alberto Fuerte Rodríguez
Zoom
19 Feb 2021 - 11:00 Europe/LondonAnterioresVídeo de la charla