Browsing Institutt for teoretisk astrofysikk by Title
Now showing items 499-518 of 687
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)This paper presents the Planck Multi-frequency Catalogue of Non-thermal (i.e. synchrotron-dominated) Sources (PCNT) observed between 30 and 857 GHz by the ESA Planck mission. This catalogue was constructed by selecting ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)We describe an extension of the most recent version of the Planck Catalogue of Compact Sources (PCCS2), produced using a new multi-band Bayesian Extraction and Estimation Package ( BeeP ). BeeP assumes that the compact ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)The 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 ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)We 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 ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)Using Planck data combined with the Meta Catalogue of X-ray detected Clusters of galaxies (MCXC), we address the study of peculiar motions by searching for evidence of the kinetic Sunyaev-Zeldovich effect (kSZ). By ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)The Virgo cluster is the largest Sunyaev-Zeldovich (SZ) source in the sky, both in terms of angular size and total integrated flux. Planck’s wide angular scale and frequency coverage, together with its high sensitivity, ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)Recent models for the large-scale Galactic magnetic fields in the literature have been largely constrained by synchrotron emission and Faraday rotation measures. We use three different but representative models to compare ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)Although infrared (IR) overall dust emission from clusters of galaxies has been statistically detected using data from the Infrared Astronomical Satellite (IRAS), it has not been possible to sample the spectral energy ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)Using data from the Planck satellite, we study the statistical properties of interstellar dust polarization at high Galactic latitudes around the south pole (b < −60°). Our aim is to advance the understanding of the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)Parity-violating extensions of the standard electromagnetic theory cause in vacuo rotation of the plane of polarization of propagating photons. This effect, also known as cosmic birefringence, has an impact on the cosmic ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)Continuum spectra covering centimetre to submillimetre wavelengths are presented for a northern sample of 104 extragalactic radio sources, mainly active galactic nuclei, based on four-epoch Planck data. The nine Planck ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)This paper describes the identification, modelling, and removal of previously unexplained systematic effects in the polarization data of the Planck High Frequency Instrument (HFI) on large angular scales, including new ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)We investigate constraints on cosmic reionization extracted from the Planck cosmic microwave background (CMB) data. We combine the Planck CMB anisotropy data in temperature with the low-multipole polarization data to fit ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)Using the Planck 2015 data release (PR2) temperature maps, we separate Galactic thermal dust emission from cosmic infrared background (CIB) anisotropies. For this purpose, we implement a specifically tailored component-separation ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)We 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 ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)The dust-Hi correlation is used to characterize the emission properties of dust in the diffuse interstellar medium (ISM) from far infrared wavelengths to microwave frequencies. The field of this investigation encompasses ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)© ESO, 2015
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)© ESO, 2015
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Planck intermediate results: XXIX. All-sky dust modelling with Planck, IRAS, and WISE observations (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)Reproduced with permission from Astronomy & Astrophysics, © ESO, 2016
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)© ESO, 2015