A5037246569- Galaxies: Formation, Evolution, Phenomena
- Cosmology and Gravitation Theories
- Astrophysics and Star Formation Studies
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Dark Matter and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Scientific Research and Discoveries
- Astronomy and Astrophysical Research
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Solar and Space Plasma Dynamics
- Atmospheric Ozone and Climate
- Geophysics and Gravity Measurements
- Radioactive Decay and Measurement Techniques
- Relativity and Gravitational Theory
- Calibration and Measurement Techniques
- Statistical and numerical algorithms
- Superconducting and THz Device Technology
- Quantum Electrodynamics and Casimir Effect
- Astro and Planetary Science
- Astronomical Observations and Instrumentation
- History and Developments in Astronomy
- Particle physics theoretical and experimental studies
- Experimental and Theoretical Physics Studies
Hamburg Institut (Germany)
2020
Max Planck Institute for Astrophysics
2009-2018
Max Planck Society
2012-2016
Max Planck Innovation
2012-2016
European Space Research Institute
2012
Agenzia Spaziale Italiana
2012
Aalto University
2012
TU Dortmund University
2007
This paper characterizes the effective beams,the beam window functions and associated errors for Planck HFI detectors. The is angular response including effect of optics,detectors,data processing scan strategy. function representation this in harmonic domain which required to recover an unbiased measurement CMB power spectrum. a scanning instrument its beams are convolution of: (a) optical telescope feeds;(b)the time-ordered data deconvolution bolometric electronic time response; (c) merging...
Within ten nearby (d < 450 pc) Gould belt molecular clouds we evaluate statistically the relative orientation between magnetic field projected on plane of sky, inferred from polarized thermal emission Galactic dust observed by Planck at 353 GHz, and gas column density structures, quantified gradient density, NH. The selected regions, covering several degrees in size, are analysed an effective angular resolution 10′ FWHM, thus sampling physical scales 0.4 to 40 pc nearest cloud. densities...
We have constructed all-sky y-maps of the thermal Sunyaev-Zeldovich (tSZ) effect by applying specifically tailored component separation algorithms to 30 857 GHz frequency channel maps from Planck satellite survey. These reconstructed are delivered as part 2015 release. The characterised in terms noise properties and residual foreground contamination, mainly dust emission at large angular scales CIB extragalactic point sources small scales. Specific masks defined minimize residuals...
This paper presents the large-scale polarized sky as seen by Planck HFI at 353 GHz, which is most sensitive channel for dust polarization. We construct and analyse maps of polarization fraction direction, while taking account noise bias possible systematic effects. find that maximum observed high (pmax > 18%), in particular some intermediate column density (AV < 1mag) regions. There a decrease with increasing density, we interpret features this correlation light both radiative grain...
Polarized emission observed by Planck HFI at 353 GHz towards a sample of nearby fields is presented, focusing on the statistics polarization fractions $p$ and angles $ψ$. The column densities in these are representative range values obtained over whole sky. We find that: (i) largest reached most diffuse fields; (ii) maximum fraction $p_\mathrm{max}$ decreases with density $N_\mathrm{H}$ more opaque $N_\mathrm{H} > 10^{21}\,\mathrm{cm}^{-2}$; (iii) along given line sight correlated local...
The dust-HI correlation is used to characterize the emission properties of dust in diffuse interstellar medium. We cross-correlate sky maps from Planck, WMAP, and DIRBE, at 17 frequencies 23 3000 GHz, with Parkes survey 21-cm line neutral atomic hydrogen, over a contiguous area 7500 deg$^2$ centred on southern Galactic pole. Our analysis yields four specific results. (1) temperature observed be anti-correlated emissivity opacity. interpret this result as evidence for evolution within ISM....
We present the scaling relation between Sunyaev-Zeldovich (SZ) signal and stellar mass for almost 260,000 locally brightest galaxies (LBGs) selected from Sloan Digital Sky Survey (SDSS). These are predominantly central of their dark matter halos. calibrate stellar-to-halo conversion using realistic mock catalogues based on Millennium Simulation. Applying a multi-frequency matched filter to Planck data each LBG, averaging results in bins mass, we measure mean SZ down $M_\ast\sim 2\times...
Our velocity relative to the rest frame of cosmic microwave background (CMB) generates a dipole temperature anisotropy on sky which has been well measured for more than 30 years, and an accepted amplitude v/c = 0.00123, or v 369km/s. In addition this signal generated by Doppler boosting CMB monopole, our motion also modulates aberrates fluctuations (as as every other source radiation at cosmological distances). This is order 0.1% effect applied are already one part in roughly hundred...
Planck has mapped the intensity and polarization of sky at microwave frequencies with unprecedented sensitivity. We use these data to characterize frequency dependence dust emission. make 353 GHz I, Q, U Stokes maps as templates, cross-correlate them WMAP 12 from 23 GHz, over circular patches 10° radius. The cross-correlation analysis is performed for both in a consistent manner. results are corrected chance correlation between templates anisotropies cosmic background. mask that focuses our...
We use Planck data to detect the cross-correlation between thermal Sunyaev-Zeldovich (tSZ) effect and infrared emission from galaxies that make up cosmic background (CIB). first perform a stacking analysis towards Planck-confirmed galaxy clusters. produced by dusty inside these clusters demonstrate is about 50% more extended than tSZ effect. Modelling with Navarro--Frenk--White profile, we find radial profile concentration parameter $c_{500} = 1.00^{+0.18}_{-0.15}$. This indicates in...
We present all-sky modelling of the high resolution Planck, IRAS, and WISE infrared (IR) observations using physical dust model presented by Draine & Li in 2007 (DL, ApJ, 657, 810). study performance results this model, discuss implications for future modelling. The work extends DL carried out on nearby galaxies Herschel Spitzer data to Galactic emission. employ generate maps mass surface density ΣMd, optical extinction AV, starlight intensity heating bulk dust, parametrized Umin. reproduces...
The scientific performance of the Planck Low Frequency Instrument (LFI) after one year in-orbit operation is presented. We describe main optical parameters and discuss photometric calibration, white noise sensitivity, properties. A preliminary evaluation impact systematic effects For each parameters, we outline methods used to obtain them from flight data provide a comparison with pre-launch ground assessments, which are essentially confirmed in flight.
The role of the magnetic field in formation filamentary structures observed interstellar medium (ISM) is a debated topic. Planck all-sky maps linearly polarized emission from dust at 353GHz provide required combination imaging and statistics to study correlation between Galactic matter, both diffuse ISM molecular clouds. data reveal structures, or ridges, intensity map with counterparts Stokes Q and/or U maps. We focus on intermediate high latitudes column density $10^{20}$ $10^{22}$...
Using precise full-sky observations from Planck, and applying several methods of component separation, we identify characterise the emission Galactic "haze" at microwave wavelengths. The haze is a distinct diffuse emission, roughly centered on centre, extends to | b ~ 35−50° in latitude l 15−20° longitude. By combining Planck data with Wilkinson Microwave Anisotropy Probe, were able determine spectrum this high accuracy, unhindered by strong systematic biases present previous analyses....
Recent models for the large-scale Galactic magnetic fields in literature have been largely constrained by synchrotron emission and Faraday rotation measures. We use three different but representative to compare their predicted polarized dust with that measured Planck satellite. first update these match products using a common model cosmic-ray leptons. discuss impact on this analysis of ongoing problems component separation microwave bands uncertain spectrum. In particular, inferred degree...
This paper presents the characterization of in-flight beams, beam window functions, and associated uncertainties for Planck Low Frequency Instrument (LFI). The structure is similar to that presented in 2013 release; main differences concern normalization delivery functions be used polarization analysis. assessment LFI beams relies on measurements performed during observations Jupiter. By stacking data from seven Jupiter transits, profiles are measured down -25 dB at 30 44 GHz, -30 70 GHz. It...
Planck CMB temperature maps allow detection of large-scale departures from homogeneity and isotropy. We search for topology with a fundamental domain nearly intersecting the last scattering surface (comoving distance $\chi_r$). For most topologies studied likelihood maximized over orientation shows some preference multi-connected models just larger than $\chi_r$. This effect is also present in simulated realizations isotropic we interpret it as alignment mild anisotropic correlations chance...