L. Bonavera
A5103860370- Galaxies: Formation, Evolution, Phenomena
- Cosmology and Gravitation Theories
- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
- Astrophysics and Star Formation Studies
- Dark Matter and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Scientific Research and Discoveries
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Calibration and Measurement Techniques
- Atmospheric Ozone and Climate
- Geophysics and Gravity Measurements
- Adaptive optics and wavefront sensing
- Superconducting and THz Device Technology
- Solar and Space Plasma Dynamics
- Neutrino Physics Research
- Relativity and Gravitational Theory
- Astro and Planetary Science
- Radioactive Decay and Measurement Techniques
- History and Developments in Astronomy
- Statistical and numerical algorithms
- Astrophysical Phenomena and Observations
- Particle physics theoretical and experimental studies
Universidad de Oviedo
2016-2024
Universidad de Cantabria
2012-2016
Consejo Superior de Investigaciones Científicas
2012-2016
Instituto de Física de Cantabria
2012-2016
Unidades Centrales Científico-Técnicas
2015-2016
European Space Astronomy Centre
2015
Scuola Internazionale Superiore di Studi Avanzati
2011-2012
Australia Telescope National Facility
2010-2012
Commonwealth Scientific and Industrial Research Organisation
2010-2012
Astronomy and Space
2011
We present results based on full-mission Planck observations of temperature and polarization anisotropies the CMB. These data are consistent with six-parameter inflationary LCDM cosmology. From lensing data, for this cosmology we find a Hubble constant, H0= (67.8 +/- 0.9) km/s/Mpc, matter density parameter Omega_m = 0.308 0.012 scalar spectral index n_s 0.968 0.006. (We quote 68% errors measured parameters 95% limits other parameters.) Combined LFI measurements lead to reionization optical...
The ESA's Planck satellite, dedicated to studying the early Universe and its subsequent evolution, was launched 14 May 2009 has been scanning microwave submillimetre sky continuously since 12 August 2009. This paper gives an overview of mission performance, processing, analysis, characteristics data, scientific results, science data products papers in release. include maps CMB diffuse extragalactic foregrounds, a catalogue compact Galactic sources, list sources detected through SZ effect....
We present the implications for cosmic inflation of Planck measurements microwave background (CMB) anisotropies in both temperature and polarization based on full survey, which includes more than twice integration time nominal survey used 2013 release papers. The mission data a first large angular scales measure spectral index curvature perturbations to be ns = 0.968 ± 0.006 tightly constrain its scale dependence dns/ dlnk −0.003 0.007 when combined with lensing likelihood. When high-ℓ are...
We present the all-sky Planck catalogue of Sunyaev-Zeldovich (SZ) sources detected from 29 month full-mission data. The (PSZ2) is largest SZ-selected sample galaxy clusters yet produced and deepest clusters. It contains 1653 detections, which 1203 are confirmed with identified counterparts in external data-sets, first cluster survey containing > $10^3$ a detailed analysis selection function terms its completeness statistical reliability, placing lower limit 83% on purity. Using simulations,...
The European Space Agency's Planck satellite, dedicated to studying the early Universe and its subsequent evolution, was launched 14~May 2009 scanned microwave submillimetre sky continuously between 12~August 23~October 2013. In February~2015, ESA Collaboration released second set of cosmology products based on data from entire mission, including both temperature polarization, along with a scientific technical papers web-based explanatory supplement. This paper gives an overview main...
We report the results of a joint analysis data from BICEP2/Keck Array and Planck. BICEP2 Keck have observed same approximately 400 deg$^2$ patch sky centered on RA 0h, Dec. $-57.5\deg$. The combined maps reach depth 57 nK deg in Stokes $Q$ $U$ band at 150 GHz. Planck has full polarization seven frequencies 30 to 353 GHz, but much less deeply any given region (1.2 $\mu$K 143 GHz). detect 150$\times$353 cross-correlation $B$-modes high significance. fit single- cross-frequency power spectra...
This paper presents the Planck 2015 likelihoods, statistical descriptions of 2-point correlations CMB data, using hybrid approach employed previously: pixel-based at $\ell<30$ and a Gaussian approximation to distribution spectra higher $\ell$. The main improvements are use more better processed data polarization detailed foreground instrumental models, allowing further checks enhanced immunity systematics. Progress in modelling enables larger sky fraction. Improvements processing models...
We study the implications of Planck data for models dark energy (DE) and modified gravity (MG), beyond cosmological constant scenario. start with cases where DE only directly affects background evolution, considering Taylor expansions equation state, principal component analysis parameterizations related to potential a minimally coupled scalar field. When estimating density at early times, we significantly improve present constraints. then move general or MG perturbations that encompass both...
We present cluster counts and corresponding cosmological constraints from the Planck full mission data set. Our catalogue consists of 439 clusters detected via their Sunyaev-Zeldovich (SZ) signal down to a signal-to-noise ratio 6, is more than factor 2 larger 2013 cosmology sample. The are consistent with those yield compatible under same modelling assumptions. Taking advantage catalogue, we extend our analysis two-dimensional distribution in redshift signal-to-noise. use mass estimates two...
The two fundamental assumptions of the standard cosmological model - that initial fluctuations are statistically isotropic and Gaussian rigorously tested using maps cosmic microwave background (CMB) anisotropy from Planck satellite. Deviations isotropy have been found demonstrated to be robust against component separation algorithm, mask choice frequency dependence. Many these anomalies were previously observed in WMAP data, now confirmed at similar levels significance (about 3 sigma)....
The Planck nominal mission cosmic microwave background (CMB) maps yield unprecedented constraints on primordial non-Gaussianity (NG). Using three optimal bispectrum estimators, separable template-fitting (KSW), binned, and modal, we obtain consistent values for the local, equilateral, orthogonal amplitudes, quoting as our final result fNL^local= 2.7+/-5.8, fNL^equil= -42+/-75, fNL^ortho= -25+\-39 (68% CL statistical). NG is detected in data; using skew-C_l statistics find a nonzero from...
The Planck full mission cosmic microwave background(CMB) temperature and E-mode polarization maps are analysed to obtain constraints on primordial non-Gaussianity(NG). Using three classes of optimal bispectrum estimators - separable template-fitting (KSW), binned, modal we consistent values for the local, equilateral, orthogonal amplitudes, quoting as our final result from alone fNL^local=2.5+\-5.7, fNL^equil=-16+\-70 fNL^ortho=-34+\-33(68%CL). Combining data fNL^local=0.8+\-5.0,...
Planck has mapped the microwave sky in nine frequency bands between 30 and 857 GHz temperature seven 353 polarization. In this paper we consider problem of diffuse astrophysical component separation, process these maps within a Bayesian framework to derive consistent set full-sky maps. For analysis, combine observations with 9-year WMAP Haslam et al. 408 MHz map joint model CMB, synchrotron, free-free, spinning dust, CO, line emission 94 100 channels, thermal dust emission. Full-sky are...
We present the Planck likelihood, a complete statistical description of two-point correlation function CMB temperature fluctuations. use this likelihood to derive power spectrum over three decades in l, covering 2 <= l 2500. The main source error at 1500 is cosmic variance. Uncertainties small-scale foreground modelling and instrumental noise dominate budget higher l's. For < 50, our exploits all frequency channels from 30 353 GHz through physically motivated Bayesian component separation...