Lentes para ver cómo se distribuye la materia en el universoReconstruyendo las órbitas galácticas con Inteligencia ArtificialAnálisis exhaustivo de eyecciones de plasma solar

Lenses to see how is matter distributed in the universe

An international research team led by Elizabeth Gonzalez of the Institute of Theoretical and Experimental Astronomy (IATE) analysed how matter is distributed in galaxy clusters, using an effect called 'gravitational lensing'.

Reconstructing orbits of galaxies with Artificial Intelligence

A research team from the Institute of Theoretical and Experimental Astronomy (IATE), with the collaboration of researchers from La Plata and Chile, developed a machine learning method that allows the reconstruction of the galaxy orbits from their observed positions.

Comprehensive analysis of solar plasma ejections

Researchers from the Institute of Theoretical and Experimental Astronomy (IATE), together with an international team, published an article in which, based on observations, the deviations of solar material ejections are studied.

Galactic and Extragalactic Astronomy

The Seyfert’s Sextet

The 13.8 billion years of the Universe is enough time to form giant objects, being the galaxies one of the most interesting. Galaxies are truly island universes where dark matter, billions of stars and huge amounts of gas and dust coexist in equilibrium, and yet, they are an environment suitable for the formation of new stars. Galaxies also tend to cluster in a network of cosmic proportions which highlights fabulous large structures formed by thousands of galaxies.

At the IATE, the study of galaxies has been a constant challenge, which has allowed to consolidate over the years different methods for the study of the formation and evolution of galaxies. Some of the most important are: Numerical Simulations: the physical processes that govern the evolutionary history of one or many galaxies are recreated by using supercomputers: Statistical Studies: properties of galaxies are inferred and analysed from large data surveys; Astronomical Observations: classic observations and the most modern and sophisticated techniques are combined by using the telescope facilities around the world. 

The large-scale structure of the universe is the field of cosmology that studies the distribution of matter on the largest scales of the universe (on the order of one billion light years). This field has developed extraordinarily since the 80's with the development of three-dimensional maps of galaxies in multiple bands of the electromagnetic spectrum, and with the observation of the microwave background radiation. With the increasing flow of information generated by observatories, a characterization of the content of the universe has been obtained (consisting of 74% of vacuum energy, 26% of dark matter and 4% ordinary baryonic matter). Galaxies are organized in a structured way and following a hierarchical model where the upper scale is dominated by a network of clusters and filaments. This filaments tend to align configuring sheets which surround large near empty regions called voids. Above this the universe seems to be isotropic and homogeneous in accordance with the cosmological principle. Through the development of numerical simulations, the distribution and topology of these structures is characterized by statistical test designed for the comparison with observational data. In our group we study from pairs of galaxies, compact groups, galaxy groups (systems with the order of hundred of galaxy members) clusters of galaxies (thousands or more members), filaments and cosmic voids. Our studies focus on the dynamics and formation of this structure, how this topology could affect galaxy formation and how the large scale structure can be used to describe the physical parameters of our Universe.

 

Galactic and Extragalactic Astronomy

The 13.8 billion years of the Universe is enough time to form giant objects, being the galaxies one of the most interesting. Galaxies are truly island universes where […]

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Stellar Astrophysics

El Universo está plagado de estrellas y la mayoría de ellas forman sistemas estelares y asociaciones. Entre los muchos sistemas estelares que pueden observarse, los cúmulos estelares (CE) se encuentran […]

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Large Scale Structure of the Universe

The large-scale structure of the Universe is the field of cosmology that studies the distribution of the matter in the Universe on the largest scales […]

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Astrophysical Plasmas

The plasma is the most common state of the baryonic matter in the Universe (99%). Most of a star, the interplanetary and interstellar medium, and the ionosphere, are plasmas […]

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Planetary Systems

Los estudios desarrollados por los integrantes del Grupo de Sistemas Planetarios buscan descifrar el origen y la evolución dinámica de planetas y cuerpos menores que orbitan el Sol u otras estrellas. […]

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