Saturnalia 23
El sol sigue girando, el nuevo solsticio de invierno se acerca, y con él, una nueva celebración de Saturnalia.
CAPA Centro de Investigacion en Fisica de Astroparticulas y Altas Energias
Research center on astrophysics, particle physics and cosmology
El sol sigue girando, el nuevo solsticio de invierno se acerca, y con él, una nueva celebración de Saturnalia.
El solsticio de invierno se acerca de nuevo. Cómo pasa el tiempo! y con él el comienzo de nuestra conferencia anual de saturnalia.
Este año disfrutaremos de algunos de nuestros ponentes en vivo y en directo, mientras que otros nos deleitarán a distancia (mediante ZOOM en el enlace https://rediris.zoom.us/j/7818936953)
Nuestro formato vuelve a la carga
Podéis encontrar todos los detalles (incluidos los de conexión) en la página de Saturnalia 21:
https://indico.capa.unizar.es/e/saturnalia21
This thursday 16th December 2021, 12:00 in the «Seminario de Física Atómica, Molecular y Nuclear» and ONLINE we will have a new CAPA/theory seminar :
Speaker: Bodo schwabe (Dep. Física Teórica, Universidad de Zaragoza)
Title: Adaptive Mesh Refinement Simulations of Cosmological Scalar Fields
The talk will be given in person in the Seminar room and will be broadcasted via ZOOM in this link: https://rediris.zoom.us/j/86416862083
CAPA indico record: https://indico.capa.unizar.es/event/20/
Abstract: Over the past 15 months that I have had the please to be part of the Departamento de Física Teórica I continued my broad research on adaptive mesh refinement (AMR) simulations of cosmological scalar fields. In this seminar talk I will highlight the main scientific results that are the product of my stay at the Universidad de Zaragoza. This includes a new numerical method for ultra-deep zoom-in simulations of cosmological structure formation with fuzzy dark matter allowing numerical analyses of Milky Way-sized halos. Additionally, I will present preliminary results of cosmological structure formation suppression in scenarios where fuzzy dark matter is considered as an admixture to cold dark matter. The same numerical techniques are utilized for gravitational collapse simulations of the inflaton field in the post-inflationary, matter dominated Universe. Finally, I will highlight numerical results of QCD axion evolution assuming PQ-symmetry breaking after inflation using AMR techniques to better resolve axion strings and axitons for increasingly realistic simulations.
El 1 de Julio a las 12.10 h. tendrá lugar el seminario organizado por el Centro de Astropartículas y Física de Altas Energías “Star forming emission line galaxies at z~1 as cosmological tracers”, impartido por Violeta Gonzalez Perez, investigadora del programa «Atracción de Talento» en el CIAFF de la Universidad Autónoma de Madrid.
El seminario se realizará a través del siguiente enlace zoom. No te lo pierdas!
Abstract:
Current and future cosmological surveys (SDSS-IV/eBOSS, DESI, Euclid) are targeting star forming galaxies emission line galaxies at z~1. These galaxies are dominated by [OII] emitters when the selection is done using optical instruments. This talk will start with an overview of the different techniques to study the formation and evolution of galaxies computationally to then focus on the modelling of star forming emission line galaxies (ELGs). Using a state-of-the-art model of galaxy formation and evolution we explore the global properties of [OII] emitters, including their large scale environment. Model galaxies are selected with cuts in different properties such that the samples can be directly compared with a range of both narrow and wide observational surveys: DEEP2, VVDS, eBOSS and DESI. The selected [OII] emitters are hosted by haloes with halo masses above 10^10.3 Msun/h, with ~90% of them being central star-forming galaxies. The predicted mean halo occupation distributions of [OII] emitters has a shape typical of that inferred for star-forming galaxies, with the contribution from central galaxies being far from the canonical step function. The mean halo occupation distribution for central [OII] emitters can be described as the sum of an asymmetric Gaussian for disks and a step function for spheroids, which plateaus below unity. The large scale environment of model galaxies is obtained for fixed number density samples, using a velocity-shear-tensor and a tidal-tensor algorithms. About half of the fixed number density ELGs live in filaments, following the distribution of SFR selected galaxies with the same number density, and a third in cosmic sheets. SFR cut selected ELGs and general galaxies with equal number density, have the same large scale bias but their clustering below separations of 1Mpc/h are different. Although as a first approximation the samples that will be targeted by DESI, 4MOST, MSE, etc. are simply star forming galaxies, the model ELGs do trace a slightly different large scale environment.
https://indico.capa.unizar.es/event/18/
https://rediris.zoom.us/j/85967597081
El solsticio de invierno se acerca inexorablemente y con él el comienzo de nuestra conferencia anual de saturnalia.
Como novedades, este año nuestro Saturnalia 2020 comenzará el mismo día del solsticio (21 de Diciembre) y se celebrará online (via zoom.us).
La conferencia Saturnalia 2020 tendrá este año un formato más relajado:
Podéis encontrar todos los detalles (incluidos los de conexión) en la página de Saturnalia 2020:
https://indico.capa.unizar.es/event/12/
Además podéis añadir el calendario de Saturnalia a vuestro e-calendario mediante el siguiente enlace: https://calendar.google.com/calendar/u/1?cid=Y18xMW1vNnBtN2VqYTlmaDU3OTlubmZ0dnNra0Bncm91cC5jYWxlbmRhci5nb29nbGUuY29t