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
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The LSPE-Strip beamsIn this paper we describe the design and characterization of the optical system of LSPE/Strip, a coherent polarimeter array that will observe the microwave sky from the Teide Observatory in Tenerife in two frequency bands centred at 43 and 95 GHz through a dual-reflector crossed-Dragone telescope of 1.5 m aperture. In general, optical systemsRealini, S. et al.
Fecha de publicación:
12022 -
In-flight polarization angle calibration for LiteBIRD: blind challenge and cosmological implicationsWe present a demonstration of the in-flight polarization angle calibration for the JAXA/ISAS second strategic large class mission, LiteBIRD, and estimate its impact on the measurement of the tensor-to-scalar ratio parameter, r, using simulated data. We generate a set of simulated sky maps with CMB and polarized foreground emission, and injectKrachmalnicoff, N. et al.
Fecha de publicación:
12022 -
Accurate sky signal reconstruction for ground-based spectroscopy with kinetic inductance detectorsContext. Wide-field spectrometers are needed to deal with current astrophysical challenges that require multiband observations at millimeter wavelengths. An example of these is the KIDs Interferometer Spectrum Survey (KISS), which uses two arrays of kinetic inductance detectors (KIDs) coupled to a Martin-Puplett interferometer (MPI). KISS has aFasano, A. et al.
Fecha de publicación:
122021 -
Revisiting the Distance to Radio Loops I and IV Using Gaia and Radio/Optical Polarization DataGalactic synchrotron emission exhibits large angular scale features known as radio spurs and loops. Determining the physical size of these structures is important for understanding the local interstellar structure and for modeling the Galactic magnetic field. However, the distance to these structures is either under debate or entirely unknown. WePanopoulou, G. V. et al.
Fecha de publicación:
122021 -
Microwave spectro-polarimetry of matter and radiation across space and timeThis paper discusses the science case for a sensitive spectro-polarimetric survey of the microwave sky. Such a survey would provide a tomographic and dynamic census of the three-dimensional distribution of hot gas, velocity flows, early metals, dust, and mass distribution in the entire Hubble volume, exploit CMB temperature and polarisationDelabrouille, Jacques et al.
Fecha de publicación:
62021 -
A space mission to map the entire observable universe using the CMB as a backlightThis Science White Paper, prepared in response to the ESA Voyage 2050 call for long-term mission planning, aims to describe the various science possibilities that can be realized with an L-class space observatory that is dedicated to the study of the interactions of cosmic microwave background (CMB) photons with the cosmic web. Our aim isBartlett, James G. et al.
Fecha de publicación:
62021 -
New horizons in cosmology with spectral distortions of the cosmic microwave backgroundThis Voyage 2050 paper highlights the unique science opportunities using spectral distortions of the cosmic microwave background (CMB). CMB spectral distortions probe many processes throughout the history of the Universe, delivering novel information that complements past, present and future efforts with CMB anisotropy and large-scale structureSilk, J. et al.
Fecha de publicación:
62021 -
The PICASSO map-making code: application to a simulation of the QUIJOTE northern sky surveyMap-making is an important step for the data analysis of cosmic microwave background (CMB) experiments. It consists of converting the data, which are typically a long, complex, and noisy collection of measurements, into a map, which is an image of the observed sky. We present in this paper a new map-making code named PICASSO (Polarization andGuidi, F. et al.
Fecha de publicación:
112021 -
Study of the thermal and nonthermal emission components in M 31: the Sardinia Radio Telescope view at 6.6 GHzContext. The Andromeda galaxy is the best-known large galaxy besides our own Milky Way. Several images and studies exist at all wavelengths from radio to hard X-ray. Nevertheless, only a few observations are available in the microwave range where its average radio emission reaches the minimum. Aims: In this paper, we want to study the radioFatigoni, S. et al.
Fecha de publicación:
72021 -
The large scale polarization explorer (LSPE) for CMB measurements: performance forecastThe measurement of the polarization of the Cosmic Microwave Background (CMB) radiation is one of the current frontiers in cosmology. In particular, the detection of the primordial divergence-free component of the polarization field, the B-mode, could reveal the presence of gravitational waves in the early Universe. The detection of such a componentAddamo, G. et al.
Fecha de publicación:
82021 -
A Forecast of the Sensitivity on the Measurement of the Optical Depth to Reionization with the GroundBIRD ExperimentWe compute the expected sensitivity on measurements of optical depth to reionization for a ground-based experiment at Teide Observatory. We simulate polarized partial sky maps for the GroundBIRD experiment at the frequencies 145 and 220 GHz. We perform fits for the simulated maps with our pixel-based likelihood to extract the optical depth toLee, K. et al.
Fecha de publicación:
72021 -
Cosmological parameter forecasts by a joint 2D tomographic approach to CMB and galaxy clusteringThe cross-correlation between the cosmic microwave background (CMB) fields and matter tracers carries important cosmological information. In this paper, we forecast by a signal-to-noise ratio analysis the information contained in the cross-correlation of the CMB anisotropy fields with source counts for future cosmological observations and itsBermejo-Climent, José Ramón et al.
Fecha de publicación:
52021 -
Detection of spectral variations of Anomalous Microwave Emission with QUIJOTE and C-BASSAnomalous Microwave Emission (AME) is a significant component of Galactic diffuse emission in the frequency range 10- $60\, \mathrm{GHz}$ and a new window into the properties of sub-nanometre-sized grains in the interstellar medium. We investigate the morphology of AME in the ≍10 ○ diameter λ Orionis ring by combining intensity data from theCepeda-Arroita, R. et al.
Fecha de publicación:
52021 -
28-40 GHz variability and polarimetry of bright compact sources in the QUIJOTE cosmological fieldsWe observed 51 sources in the Q-U-I JOint TEnerife (QUIJOTE) cosmological fields that were brighter than 1 Jy at 30 GHz in the Planck Point Source Catalogue (version 1), with the Very Large Array at 28-40 GHz, in order to characterize their high-radio-frequency variability and polarization properties. We find a roughly lognormal distribution ofPerrott, Yvette C. et al.
Fecha de publicación:
42021 -
Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constantObservations of metal absorption systems in the spectra of distant quasars allow one to constrain a possible variation of the fine-structure constant throughout the history of the Universe. Such a test poses utmost demands on the wavelength accuracy and previous studies were limited by systematics in the spectrograph wavelength calibration. ASchmidt, Tobias M. et al.
Fecha de publicación:
22021 -
The Establishment of the Standard Cosmological Model Through ObservationsOver the last decades, observations with increasing quality have revolutionized our understanding of the general properties of the Universe. Questions posed for millenia by mankind about the origin, evolution and structure of the cosmos have found an answer. This has been possible mainly thanks to observations of the Cosmic Microwave Background, ofGénova-Santos, Ricardo Tanausú
Fecha de publicación:
62020 -
Progress Report on the Large-Scale Polarization ExplorerThe large-scale polarization explorer (LSPE) is a cosmology program for the measurement of large-scale curl-like features (B-modes) in the polarization of the cosmic microwave background. Its goal is to constrain the background of inflationary gravity waves traveling through the universe at the time of matter-radiation decoupling. The twoLamagna, L. et al.
Fecha de publicación:
42020 -
Updated Design of the CMB Polarization Experiment Satellite LiteBIRDRecent developments of transition-edge sensors (TESs), based on extensive experience in ground-based experiments, have been making the sensor techniques mature enough for their application on future satellite cosmic microwave background (CMB) polarization experiments. LiteBIRD is in the most advanced phase among such future satellites, targetingSugai, H. et al.
Fecha de publicación:
12020 -
Planck intermediate results. LVI. Detection of the CMB dipole through modulation of the thermal Sunyaev-Zeldovich effect: Eppur si muove IIThe largest temperature anisotropy in the cosmic microwave background (CMB) is the dipole, which has been measured with increasing accuracy for more than three decades, particularly with the Planck satellite. The simplest interpretation of the dipole is that it is due to our motion with respect to the rest frame of the CMB. Since current CMBPlanck Collaboration et al.
Fecha de publicación:
122020 -
Planck intermediate results. LVII. Joint Planck LFI and HFI data processingWe present the NPIPE processing pipeline, which produces calibrated frequency maps in temperature and polarization from data from the Planck Low Frequency Instrument (LFI) and High Frequency Instrument (HFI) using high-performance computers. NPIPE represents a natural evolution of previous Planck analysis efforts, and combines some of the mostPlanck Collaboration et al.
Fecha de publicación:
112020
Charlas relacionadas
No se han encontrado charlas relacionadas.Congresos relacionados
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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
