Saturnalia 2021: anuncio y programa

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

  • Duración: 20-23 de Diciembre, charlas a las 14:00 y las ~17:30
  • Formato: 2 charlas de cada día, 45 min + 15 de discusión
  • Ponentes: Rodrigo García Ruiz, Filiberto Ares, Chang Lee, Jacobo Asorey (TBC), Diego Blas, Javier Relancio, Mohammad Sharifian, Cristian Cogollos
  • Calificación: Todos los públicos (Hemos solicitado a los conferenciantes que al menos la primera mitad de las charlas sean de un nivel accesible, de modo que los estudiantes del Grado en Física son bienvenidos).

Podéis encontrar todos los detalles  (incluidos los de conexión) en la página de Saturnalia 21:

https://indico.capa.unizar.es/e/saturnalia21

 

Seminario CAPA: Bodo Schwabe on «Adaptive Mesh Refinement Simulations of Cosmological Scalar Fields» 🗺

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.

 

Charla de Miguel Ángel Sánchez Conde sobre detección indirecta de Materia Oscura

Indirect Dark Matter

Dr. Miguel Ángel Sánchez Conde is a researcher at Universidad Autónoma de Madrid leading a group with a focus on gamma-ray dark matter searches, astroparticle physics and cosmological simulations.

Abstract: The nature of the dark matter (DM) in the Universe is one of the greatest mysteries of our time, and its quest of utmost relevance for the whole scientific community. Among the efforts currently ongoing, the search for annihilation or decay products of DM particle candidates like the WIMP already provided abundant information and allowed to set competitive constraints on the DM particle properties. In this review talk, I will summarize the current status of this ‘indirect’ search of DM, paying particular attention to results obtained with gamma-ray telescopes from the direction of the best astrophysical targets. I will finally discuss on future DM sensitivity prospects and new DM search opportunities.»

Horario: 12:00, del jueves 9 de diciembre, en el seminario de Física nuclear u on-line .

Workshop on New Trends in Quantum Physics, Fernando Falceto Fest, 3 de diciembre

Los discípulos de Fernando Falceto hemos decidido organizar el día 3 de diciembre un symposium titulado «New Trends in Quantum Physics» como homenaje con la ocasión de su 60 cumpleaños. El evento tendrá lugar en la Sala de Grados del Edificio A de la Facultad de Ciencias y el programa puede consultarse en la página web

http://saturno.unizar.es/F3www.html

Los organizadores,
F. Ares, M. Asorey, I. Calvo, J. C. Cuchi, G. Luzon.

Charla de Bodo Schwabe sobre «fuzzy dark matter» 🗓

Bodo Schwabe is a PostDoc Researcher at CAPA, focused on dark matter, axions and numerical simulations.

Abstract: On linear scales much larger than the typical extend of galaxies the standard model of cosmology with cold dark matter and a cosmological constant can reproduce observational data with high precision. But there are potential difficulties on galactic scales. In this 50 minutes master level lecture I will present the main concepts of fuzzy dark matter, a well motivated dark matter candidate that reproduces the successes of cold dark matter on large scales, while implying unique observable features like solitons and interference patterns within halos and filaments. During the lecture I will derive the equations of motion governing the evolution of fuzzy dark matter, concentrating on their physical implications. While conceptionally simply, solving these non-linear equations requires intensive numerical computations. Alongside the theoretical considerations I will therefore present numerical methods that have been used to analyse non-linear dynamics of fuzzy dark matter on (sub-)galactic scales

Charla de Maurizio Giannotti sobre axiones

Maurizio Giannotti is a Physics Professor at Barry University, Fulbright visitor at CAPA. Research in astroparticle physics, axions and axion like particles.

Abstract: The research on axions has gained great attention in the last decade. We are finally reaching the experimental capabilities to detect axions in the most motivated parameter regions and the University of Zaragoza is playing a major role in this effort. In this talk, I will present an overview of the strong CP problem and of the axion solution. I will emphasize the phenomenological aspects and in particular try to justify the selection of physically motivated axion parameter regions. I will emphasize the impact of axions on stellar evolution and the experimental potential to detect them in the near future.

Jueves 14 de octubre, en el seminario de Física Nuclear, a las 12:00.

Anuncio

 

Seminario CAPA online by Violeta Gonzalez Perez

Seminario CAPA online by Violeta Gonzalez Perez:

Star forming emission line galaxies at z~1 as cosmological tracers

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

Seminario CAPA online: News on the muon g-2: an informal discussion

El 28 de abril a las 16.30 h. tendrá lugar el seminario organizado por el Centro de Astropartículas y Física de Altas Energías «News on the muon g-2: an informal discussion», impartido por Pere Masjuan (IFAE) y Alejandro Vaquero (Utah U.)
El seminario se realizará a través del siguiente enlace zoom. También se podrá seguir en directo a través del canal YouTube de CAPA (se recomienda usar el enlace zoom para poder participar en la discusión).

Abstract:
In the light of the recent experimental results on the muon g-2, we would like to scrutinize the Standard Model contributions, comment about its weak and strong points, and openly discuss with the Zaragoza group about possible avenues to explain the apparent anomaly.

Seminario online «Search for Light dark matter with Spherical Proportional Counters» impartido por Ioannis Katsioulas (University of Birmingham, UK), 25 de febrero.

El 25 de febrero a las 12 h tendrá lugar el seminario organizado por el Departamento de Física Teórica y CAPA titulado «Search for Light dark matter with Spherical Proportional Counters«, que será impartido telemáticamente por Ioannis Katsioulas (School of Physics and Astronomy, University of Birmingham, United Kingdom).
Conexión a través del enlace zoom: https://rediris.zoom.us/j/85134053268.

Cartel y resumen del seminario: pdf

Diapositivas de la presentacion: pdf

Saturnalia 2020: Anuncio y programa 🗓

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:

  • Duración:   21 de Diciembre, de 12h a 15h y 22 de Diciembre, de 12h a 14h.
  • Formato:   3~4 charlas de 30min cada día, con 15min para preguntas, discusión, café y socialización online entre ellas.
  • Ponentes:    Konrad Altenmueller, Ernesto Arganda, Jacobo Asorey, Juan Antonio García Pascual, Maurizio Giannotti, Yisely Martinez, Bodo Schwabe … 
  • Calificación:   Todos los públicos (Hemos solicitado a los conferenciantes que al menos la primera mitad de las charlas sean de un nivel accesible, de modo que los estudiantes del Grado en Física son bienvenidos).

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

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