Año de inicio
1986
Unidad organizativa
Institución organizadora
Subvenciones relacionadas:
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.
Miembros
Investigador principal
Prof.
Rafael
Rebolo López
Personal del proyecto
Ricardo Tanausú
Genova Santos
Carlos Manuel
Gutiérrez de La Cruz
José Alberto
Rubiño Martín
Frédéric Nicolas David
Poidevin
Colaboradores
Prof.
Anthony Lasenby
Dr.
Fernando Atrio Barandela
Dr.
Enrique Martínez González
Dr.
Carlos Hernández Monteagudo
Resultados
- 6-7 de junio: XV reunión científica del Consorcio QUIJOTE (IFCA, Santander)
- Julio: publicación de los resultados (12 artículos) y de los datos finales del satélite Planck.
- 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).
- Octubre: instalación el observatorio del Teide de la cúpula de GroundBIRD.
- Diciembre: aceptación del tercer artículo científico de QUIJOTE (Poidevin et al. 2019)
Actividad científica
Publicaciones relacionadas
-
Planck intermediate results. XXVI. Optical identification and redshifts of Planck clusters with the RTT150 telescopeWe present the results of approximately three years of observations of Planck Sunyaev-Zeldovich (SZ) sources with the Russian-Turkish 1.5 m telescope (RTT150), as a part of the optical follow-up programme undertaken by the Planck collaboration. During this time period approximately 20% of all dark and grey clear time available at the telescope wasPlanck Collaboration et al.
Fecha de publicación:
102015 -
Planck intermediate results. XXIII. Galactic plane emission components derived from Planck with ancillary dataPlanck data when combined with ancillary data provide a unique opportunity to separate the diffuse emission components of the inner Galaxy. The purpose of the paper is to elucidate the morphology of the various emission components in the strong star-formation region lying inside the solar radius and to clarify the relationship between the variousPlanck Collaboration et al.
Fecha de publicación:
82015 -
Planck intermediate results. XXIV. Constraints on variations in fundamental constantsAny variation in the fundamental physical constants, more particularly in the fine structure constant, α, or in the mass of the electron, me, affects the recombination history of the Universe and cause an imprint on the cosmic microwave background angular power spectra. We show that the Planck data allow one to improve the constraint on the timePlanck Collaboration et al.
Fecha de publicación:
82015 -
Constraining the Redshift Evolution of the Cosmic Microwave Background Blackbody Temperature with PLANCK Data.We constrain the deviation of adiabatic evolution of the universe using the data on the cosmic microwave background (CMB) temperature anisotropies measured by the Planck satellite and a sample of 481 X-ray selected clusters with spectroscopically measured redshifts. To avoid antenna beam effects, we bring all of the maps to the same resolution. Wede Martino, I. et al.
Fecha de publicación:
82015 -
Planck 2013 results. XXXII. The updated Planck catalogue of Sunyaev-Zeldovich sourcesWe update the all-sky Planck catalogue of 1227 clusters and cluster candidates (PSZ1) published in March 2013, derived from detections of the Sunyaev-Zeldovich (SZ) effect using the first 15.5 months of Planck satellite observations. As an addendum, we deliver an updated version of the PSZ1 catalogue, reporting the further confirmation of 86 PlanckPlanck Collaboration et al.
Fecha de publicación:
92015 -
Constraining the evolution of the CMB temperature with SZ measurements from Planck dataThe CMB temperature-redshift relation, TCMB(z)=T0(1+z), is a key prediction of the standard cosmology but is violated in many non-standard models. Constraining possible deviations from this law is an effective way to test the ΛCDM paradigm and to search for hints of new physics. We have determined TCMB(z), with a precision up to 3%, for a subsampleLuzzi, G. et al.
Fecha de publicación:
92015 -
QUIJOTE scientific results - I. Measurements of the intensity and polarisation of the anomalous microwave emission in the Perseus molecular complexIn this paper, we present Q-U-I JOint Tenerife Experiment (QUIJOTE) 10-20 GHz observations (194 h in total over ≈250 deg2) in intensity and polarisation of G159.6-18.5, one of the most widely studied regions harbouring anomalous microwave emission (AME). By combining with other publicly available intensity data, we achieve the most precise spectrumVielva, P. et al.
Fecha de publicación:
102015 -
Joint Analysis of BICEP2/Keck Array and Planck DataWe report the results of a joint analysis of data from BICEP2/Keck Array and Planck. BICEP2 and Keck Array have observed the same approximately 400 deg2 patch of sky centered on RA 0 h, Dec. -57.5 ° . The combined maps reach a depth of 57 nK deg in Stokes Q and U in a band centered at 150 GHz. Planck has observed the full sky in polarization atSchwarz, R. et al.
Fecha de publicación:
32015 -
Constraining the Baryon Fraction in the Warm Hot Intergalactic Medium at Low Redshifts with Planck DataWe cross-correlate foreground cleaned Planck Nominal cosmic microwave background (CMB) maps with two templates constructed from the Two-Micron All-Sky Redshift Survey of galaxies. The first template traces the large-scale filamentary distribution characteristic of the Warm–Hot Intergalactic Medium (WHIM) out to ∼ 90 {{h}-1} Mpc. The secondGénova-Santos, R. et al.
Fecha de publicación:
62015 -
Planck intermediate results. XIX. An overview of the polarized thermal emission from Galactic dustThis paper presents an overview of the polarized sky as seen by Planck HFI at 353 GHz, which is the most sensitive Planck channel for dust polarization. We construct and analyse maps of dust polarization fraction and polarization angle at 1° resolution, taking into account noise bias and possible systematic effects. The sensitivity of the PlanckPlanck Collaboration et al.
Fecha de publicación:
42015 -
Planck intermediate results. XXI. Comparison of polarized thermal emission from Galactic dust at 353 GHz with interstellar polarization in the visibleThe Planck survey provides unprecedented full-sky coverage of the submillimetre polarized emission from Galactic dust. In addition to the information on the direction of the Galactic magnetic field, this also brings new constraints on the properties of dust. The dust grains that emit the radiation seen by Planck in the submillimetre also extinguishPlanck Collaboration et al.
Fecha de publicación:
42015 -
Planck intermediate results. XXII. Frequency dependence of thermal emission from Galactic dust in intensity and polarization<xref ref-type="fn" rid="FN1">Planck has mapped the intensity and polarization of the sky at microwave frequencies with unprecedented sensitivity. We use these data to characterize the frequency dependence of dust emission. We make use of the Planck 353 GHz I, Q, and U Stokes maps as dust templates, and cross-correlate them with the Planck and WMAP data at 12 frequencies fromPlanck Collaboration et al.
Fecha de publicación:
42015 -
New Radio Observations of Anomalous Microwave Emission in the H II Region RCW175We have observed the H II region RCW175 with the 64 m Parkes telescope at 8.4 GHz and 13.5 GHz in total intensity, and at 21.5 GHz in both total intensity and polarization. High angular resolution ranging from 1 to 2.4 arcmin, high sensitivity, and polarization capability enable us to perform a detailed study of the different constituents of the HBattistelli, E. S. et al.
Fecha de publicación:
32015 -
Planck intermediate results. XV. A study of anomalous microwave emission in Galactic cloudsAnomalous microwave emission (AME) is believed to be due to electric dipole radiation from small spinning dust grains. The aim of this paper is a statistical study of the basic properties of AME regions and the environment in which they emit. We used WMAP and Planck maps, combined with ancillary radio and IR data, to construct a sample of 98Planck Collaboration et al.
Fecha de publicación:
52014 -
Planck intermediate results. XVI. Profile likelihoods for cosmological parametersWe explore the 2013 Planck likelihood function with a high-precision multi-dimensional minimizer (Minuit). This allows a refinement of the ΛCDM best-fit solution with respect to previously-released results, and the construction of frequentist confidence intervals using profile likelihoods. The agreement with the cosmological results from thePlanck Collaboration et al.
Fecha de publicación:
62014 -
Planck intermediate results. XIV. Dust emission at millimetre wavelengths in the Galactic planeWe use Planck HFI data combined with ancillary radio data to study the emissivity index of the interstellar dust emission in the frequency range 100-353 GHz, or 3-0.8 mm, in the Galactic plane. We analyse the region l = 20°-44° and |b| ≤ 4° where the free-free emission can be estimated from radio recombination line data. We fit the spectra at eachPlanck Collaboration et al.
Fecha de publicación:
42014 -
Planck intermediate results. XVIII. The millimetre and sub-millimetre emission from planetary nebulaeLate stages of stellar evolution are characterized by copious mass-loss events whose signature is the formation of circumstellar envelopes (CSE). Planck multi-frequency measurements have provided relevant information on a sample of Galactic planetary nebulae (PNe) in the important and relatively unexplored observational band between 30 and 857 GHzPlanck Collaboration et al.
Fecha de publicación:
12015 -
Single-walled Carbon Nanohorn: Electronic Absorption Spectra in Neutral and Oxodized StateThe electronic absorption spectrum of single-walled carbon nanohorn (SWCNH) shows a relatively broad absorption peak at 256-259 nm when suspended in tetradecane and in decalin. The electronic absorption spectrum is also characterized by a series of small bands recalling the spectra of C-60 and C-70 fullerenes. Surprisingly, SWCNH shows a minimalIglesias-Groth, S. et al.
Fecha de publicación:
112014 -
Neutron bombardment of single wall carbon nanohorn (SWCNH): DSC determination of the stored Wigner-Szilard energySingle wall carbon nanohorn (SWCNH) were neutron-bombarded to a dose of 3.28 x 10(16) n/cm(2). The Wigner or stored energy was determined by a differential scanning calorimeter and was found 5.49 J/g, 50 times higher than the Wigner energy measured on graphite flakes treated at the same neutron dose. The activation energy for the thermal annealingCataldo, F. et al.
Fecha de publicación:
32014 -
Mass spectrometric analysis of selected radiolyzed amino acids in an astrochemical contextA selection of amino acids, namely arginine, proline and tyrosine previously irradiated to 3.2 mega-Gray in the solid state and analyzed by differential scanning calorimetry (DSC) and optical rotatory dispersion (ORD) were analyzed in the present work by mass spectrometry with the purpose to identify the radiolysis products and validate the resultsCherubini C. et al.
Fecha de publicación:
32014
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 IslandsEspañaFecha-Anteriores
Noticias
Proyectos relacionados
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
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
