Anisotropía del Fondo Cósmico de Microondas

    General
    Descripción

    El objetivo general de este proyecto es determinar y estudiar las variaciones espaciales y espectrales en la temperatura del Fondo Cósmico de Microondas y en su Polarización en un amplio rango de escalas angulares que van desde pocos minutos de arco hasta varios grados. Las fluctuaciones primordiales en la densidad de materia, que dieron origen a las estructuras en la distribución de materia del Universo actual, debieron dejar una huella impresa en el Fondo de Microondas en forma de irregularidades en la distribución espacial de su temperatura. Experimentos pioneros como COBE (galardonados dos de sus investigadores principales con el Premio Nobel de Física en 2006) o Tenerife demostraron que el nivel de anisotropía en escalas angulares de varios grados está en torno a una parte en cien mil. La obtención de mapas del Fondo de Microondas en varias frecuencias y con sensibilidad suficiente para detectar estructuras a estos niveles es fundamental para obtener información sobre el espectro de potencias de las fluctuaciones primordiales en densidad, la existencia de un periodo inflacionario en el Universo muy temprano y la naturaleza de la materia y energía oscura. Más recientemente el satélite WMAP ha obtenido mapas del Fondo Cósmico de Microondas que han permitido establecer cotas sobre múltiples parámetros cosmológicos con precisiones mejores que el 10%.

    El Proyecto concentra sus esfuerzos en realizar medidas a más alta resolución espacial y sensibilidad que las obtenidas por este satélite. En el pasado se utilizaron con este fin experimentos como Tenerife, el IAC-Bartol o el interferómetro JBO-IAC, todos ellos desde el Observatorio del Teide. Más recientemente, el experimento interferométrico Very Small Array a 33 GHz fue operativo entre 1999 y 2008. Durante este tiempo también realizó observaciones desde el observatorio del Teide el experimento COSMOSOMAS, cuyo objetivo era, además de la medida de las anisotropías del CMB, la caracterización de los contaminantes galácticos.

    En los últimos 10 la actividad de este proyecto se ha centrado en la explotación científica de los datos del satélite Planck, y en la construcción, la operación y la explotación científica de los datos del experimento QUIJOTE. En la actualidad, una vez el proyecto Planck ha finalizado, la actividad se centra en la explotación científica de QUIJOTE, en el desarrollo y construcción de nueva instrumentación para el proyecto QUIJOTE, y en el desarrollo de nuevos experimentos que están siendo o que serán próximamente instalados en el Observatorio del Teide: GroundBIRD, LSPE-STRIP y TMS.

    Investigador principal
    Personal del proyecto
    Colaboradores
    Dr.
    Fernando Atrio Barandela
    Dr.
    Enrique Martínez González
    Dr.
    Carlos Hernández Monteagudo
    1. 6-7 de junio: XV reunión científica del Consorcio QUIJOTE (IFCA, Santander)
    2. Julio: publicación de los resultados (12 artículos) y de los datos finales del satélite Planck.
    3. 15-19 de octubre: Congreso "CMB foregrounds for B-mode studies", dentro del proyecto Radioforegrounds, IV AME workshop, y XVI reunión científica del Consorcio QUIJOTE (todos estos eventos celebrados en el IAC).
    4. Octubre: instalación el observatorio del Teide de la cúpula de GroundBIRD.
    5. Diciembre: aceptación del tercer artículo científico de QUIJOTE (Poidevin et al. 2019)

    Publicaciones relacionadas

    • Planck 2013 results. XXVIII. The Planck Catalogue of Compact Sources

      The Planck Catalogue of Compact Sources (PCCS) is the catalogue of sources detected in the first 15 months of Planck operations, the “nominal” mission. It consists of nine single-frequency catalogues of compact sources, both Galactic and extragalactic, detected over the entire sky. The PCCS covers the frequency range 30–857 GHz with higher

      Planck Collaboration et al.

      Fecha de publicación:

      11
      2014
      Número de citas
      183
    • Planck 2013 results. XXX. Cosmic infrared background measurements and implications for star formation

      We present new measurements of cosmic infrared background (CIB) anisotropies using Planck. Combining HFI data with IRAS, the angular auto- and cross-frequency power spectrum is measured from 143 to 3000 GHz, and the auto-bispectrum from 217 to 545 GHz. The total areas used to compute the CIB power spectrum and bispectrum are about 2240 and 4400

      Planck Collaboration et al.

      Fecha de publicación:

      11
      2014
      Número de citas
      239
    • Comparison of Prestellar Core Elongations and Large-scale Molecular Cloud Structures in the Lupus I Region

      Turbulence and magnetic fields are expected to be important for regulating molecular cloud formation and evolution. However, their effects on sub-parsec to 100 parsec scales, leading to the formation of starless cores, are not well understood. We investigate the prestellar core structure morphologies obtained from analysis of the Herschel-SPIRE 350

      Poidevin, F. et al.

      Fecha de publicación:

      8
      2014
      Número de citas
      10
    • PRISM (Polarized Radiation Imaging and Spectroscopy Mission): an extended white paper

      PRISM (Polarized Radiation Imaging and Spectroscopy Mission) was proposed to ESA in May 2013 as a large-class mission for investigating within the framework of the ESA Cosmic Vision program a set of important scientific questions that require high resolution, high sensitivity, full-sky observations of the sky emission at wavelengths ranging from

      André, P. et al.

      Fecha de publicación:

      2
      2014
      Número de citas
      193
    • Ft-Ir Spectra of Fullerenes C76, C78 and C84 At Temperatures Comprised Between -180°C and +250°C

      The FT-IR spectra of C76, C78 and C84 fullerenes were recorded in the temperature range comprised between -180°C and +250°C. The purpose of the work is to provide reference infrared spectra for searching higher fullerene homologues in space after the recent and successful discovery of C60 and C70 in a series of different astrophysical objects.

      Iglesias-Groth, S. et al.

      Fecha de publicación:

      12
      2013
    • Planck intermediate results. XII: Diffuse Galactic components in the Gould Belt system

      We perform an analysis of the diffuse low-frequency Galactic components in the southern part of the Gould Belt system (130° ≤ l ≤ 230° and -50° ≤ b ≤ -10°). Strong ultra-violet flux coming from the Gould Belt super-association is responsible for bright diffuse foregrounds that we observe from our position inside the system and that can help us

      Planck Collaboration et al.

      Fecha de publicación:

      9
      2013
      Número de citas
      20
    • A Search for near Infrared Bands of the Fullerene Cation C_{60}^+ in the Protoplanetary Nebula IRAS 01005+7910

      IRAS 01005+7910 is a carbon-rich protoplanetary nebula with a recently reported detection of mid-IR vibrational transitions of the fullerene C60 by Zhang and Kwok. We present new high spectral resolution (R ~ 57, 000) observations of this object obtained at the 3.6 m Telescopio Nazionale Galileo, showing the presence of two absorption bands at 9577

      Iglesias-Groth, S. et al.

      Fecha de publicación:

      10
      2013
      Número de citas
      15
    • Planck intermediate results. IX. Detection of the Galactic haze with Planck

      Using precise full-sky observations from Planck, and applying several methods of component separation, we identify and characterise the emission from the Galactic "haze" at microwave wavelengths. The haze is a distinct component of diffuse Galactic emission, roughly centered on the Galactic centre, and extends to | b | ~ 35-50° in Galactic latitude

      Planck Collaboration et al.

      Fecha de publicación:

      6
      2013
      Número de citas
      141
    • Observations of the Polarisation of the Anomalous Microwave Emission: A Review

      The observational status of the polarisation of the anomalous microwave emission (AME) is reviewed, both for individual compact Galactic regions as well as for the large-scale Galactic emission. There are six Galactic regions with existing polarisation constraints in the relevant range of 10?40?GHz: four dust clouds (Perseus, ? Ophiuchi, LDN1622

      Rubiño-Martín, J. A. et al.

      Fecha de publicación:

      0
      2012
      Número de citas
      34
    • Planck intermediate results. VI. The dynamical structure of PLCKG214.6+37.0, a Planck discovered triple system of galaxy clusters

      The survey of galaxy clusters performed by Planck through the Sunyaev-Zeldovich effect has already discovered many interesting objects, thanks to its full sky coverage. One of the SZ candidates detected inthe early months of the mission near to the signal-to-noise threshold, PLCKG214.6+37.0, was later revealed by XMM-Newton to be a triple system of

      Planck Collaboration et al.

      Fecha de publicación:

      2
      2013
      Número de citas
      15
    • Planck intermediate results. II. Comparison of Sunyaev-Zeldovich measurements from Planck and from the Arcminute Microkelvin Imager for 11 galaxy clusters

      A comparison is presented of Sunyaev-Zeldovich measurements for 11 galaxy clusters as obtained by Planck and by the ground-based interferometer, the Arcminute Microkelvin Imager. Assuming a universal spherically-symmetric Generalised Navarro, Frenk and White (GNFW) model for the cluster gas pressure profile, we jointly constrain the integrated

      Planck Collaboration et al.

      Fecha de publicación:

      2
      2013
      Número de citas
      24
    • Planck intermediate results. III. The relation between galaxy cluster mass and Sunyaev-Zeldovich signal

      We examine the relation between the galaxy cluster mass M and Sunyaev-Zeldovich (SZ) effect signal DA2 Y500 for a sample of 19 objects for which weak lensing (WL) mass measurements obtained from Subaru Telescope data are available in the literature. Hydrostatic X-ray masses are derived from XMM-Newton archive data, and the SZ effect signal is

      Mandolesi, N. et al.

      Fecha de publicación:

      2
      2013
      Número de citas
      71
    • Planck intermediate results. V. Pressure profiles of galaxy clusters from the Sunyaev-Zeldovich effect

      Taking advantage of the all-sky coverage and broadfrequency range of the Planck satellite, we study the Sunyaev-Zeldovich (SZ) and pressure profiles of 62 nearby massive clusters detected at high significance in the 14-month nominal survey. Careful reconstruction of the SZ signal indicates that most clusters are individually detected at least out

      Delabrouille, J. et al.

      Fecha de publicación:

      2
      2013
      Número de citas
      294
    • Planck intermediate results. VII. Statistical properties of infrared and radio extragalactic sources from the Planck Early Release Compact Source Catalogue at frequencies between 100 and 857 GHz

      We make use of the Planck all-sky survey to derive number counts and spectral indices of extragalactic sources - infrared and radio sources - from the Planck Early Release Compact Source Catalogue (ERCSC) at 100 to 857 GHz (3 mm to 350 μm). Three zones (deep, medium and shallow) of approximately homogeneous coverage are used to permit a clean and

      Davis, R. J. et al.

      Fecha de publicación:

      2
      2013
      Número de citas
      55
    • Planck intermediate results. VIII. Filaments between interacting clusters

      Context. About half of the baryons of the Universe are expected to be in the form of filaments of hot and low-density intergalactic medium. Most of these baryons remain undetected even by the most advanced X-ray observatories, which are limited in sensitivity to the diffuse low-density medium. Aims: The Planck satellite has provided hundreds of

      Zacchei, A. et al.

      Fecha de publicación:

      2
      2013
      Número de citas
      94
    • Optical spectroscopy of V1123 Tauri and its visual companion

      We present long-slit intermediate resolution spectroscopy of the visual binary V1123. We confirm that component A is a W UMa eclipsing star with spectral type G0V, while component B is a K0V. We infer a distance to the system of 125 pc, and then a projected separation between both components of 520 AU. The difference in radial velocities of

      Gutiérrez, Carlos M.

      Fecha de publicación:

      2
      2009
      Número de citas
      2
    • RICO: A New Approach for Fast and Accurate Representation of the Cosmological Recombination History

      We present RICO, a code designed to compute the ionization fraction of the universe during the epoch of hydrogen and helium recombination with an unprecedented combination of speed and accuracy. This is accomplished by training the machine learning code PICO on the calculations of a multilevel cosmological recombination code which self-consistently

      Fendt, W. A. et al.

      Fecha de publicación:

      4
      2009
      Número de citas
      44
    • Magnetic Fields and the Outer Rotation Curve of M31

      Recent observations of the rotation curve of M31 show a rise of the outer part that cannot be understood in terms of standard dark matter models or perturbations of the galactic disk by M31's satellites. Here, we propose an explanation of this dynamical feature based on the influence of the magnetic field within the thin disk. We have considered

      Ruiz-Granados, B. et al.

      Fecha de publicación:

      11
      2010
      Número de citas
      25
    • Lines in the cosmic microwave background spectrum from the epoch of cosmological helium recombination

      The main goal of this work is to calculate the contributions of bound-bound transitions of helium to the cosmological recombination spectrum. We show that helium in the early Universe causes unique features to appear in the total cosmological recombination spectrum. These may provide a unique observational possibility to determine the relative

      Rubiño-Martín, J. A. et al.

      Fecha de publicación:

      7
      2008
      Número de citas
      88
    • Estimating the impact of recombination uncertainties on the cosmological parameter constraints from cosmic microwave background experiments

      We use our most recent training set for the RICO code to estimate the impact of recombination uncertainties on the posterior probability distributions which will be obtained from future cosmic microwave background experiments, and in particular the Planck satellite. Using a Monte Carlo Markov Chain (MCMC) analysis to sample the posterior

      Rubiño-Martín, J. A. et al.

      Fecha de publicación:

      3
      2010
      Número de citas
      64

    Charlas relacionadas

    No se han encontrado charlas relacionadas.

    Congresos relacionados

    • XIX Canary Islands Winter School of Astrophysics "The Cosmic Microwave | Background: from quantum fluctuations to the present Universe"

      Tenerife, Canary Islands
      España
      Fecha
      -
      Anteriores
    Proyectos relacionados
    Parte del equipo del IAC con el sistema de desarrollo del software de vuelo
    Herschel y Planck

    Participación del IAC en las misiones espaciales HERSCHEL Y PLANCK SURVEYOR. Desde el año 1996 el Instituto de Astrofísica de Canarias viene participando en la concepción y desarrollo de la carga útil científica de las misiones espaciales Herschel Space Observatory y Planck Surveyor de la Agencia Espacial Europea (ESA).

    Jorge
    Casares Velázquez
    Ismael
    Pérez Fournon
    Rafael
    Rebolo López
    COSMOSOMAS
    COSMOSOMAS

    Mantenimiento del experimento COSMOSOMAS. Este instrumento estudia la radiación fósil que llega en forma de microondas, un tipo de luz que el ojo humano no puede captar pero que impregna todo el Universo. Actualmente se realizan tareas de puesta a punto para conseguir fiabilidad en la calidad de los datos y mejorar la seguridad de las instalaciones

    Rafael
    Rebolo López
    Polarímetro CMB instalado en Izaña
    Polarímetro CMB

    Polarímetro para el Fondo Cósmico de Microondas

    Rafael
    Rebolo López
    VSA Extension en el observatorio de Izaña
    VSA Extension

    Very Small Array Extension

    Rafael
    Rebolo López