CERN Accelerating science

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1.
Science with the Cherenkov Telescope Array / Cherenkov Telescope Array Consortium Collaboration
The Cherenkov Telescope Array, CTA, will be the major global observatory for very high energy gamma-ray astronomy over the next decade and beyond. [...]
arXiv:1709.07997.
- 2017. - 211 p.
Preprint
2.
Planck 2013 results. XXII. Constraints on inflation / Planck Collaboration
We analyse the implications of the Planck data for cosmic inflation. The Planck nominal mission temperature anisotropy measurements, combined with the WMAP large-angle polarization, constrain the scalar spectral index to $n_s = 0.9603 \pm 0.0073$, ruling out exact scale invariance at over 5 $\sigma$. [...]
arXiv:1303.5082; CERN-PH-TH-2013-135; CERN-PH-TH-2013-135.- 2014-10-29 - 42 p. - Published in : Astron. Astrophys. 571 (2014) A22 Fulltext: PDF; External links: Preprint; EDP Sciences Free Access article
3.
Planck 2013 results. XVI. Cosmological parameters / Planck Collaboration
We present the first results based on Planck measurements of the CMB temperature and lensing-potential power spectra. The Planck spectra at high multipoles are extremely well described by the standard spatially-flat six-parameter LCDM cosmology. [...]
arXiv:1303.5076; CERN-PH-TH-2013-129; CERN-PH-TH-2013-129.- 2014-10-29 - 66 p. - Published in : Astron. Astrophys. 571 (2014) A16 Fulltext: PDF; External links: Preprint; EDP Sciences Free Access article
4.
Planck 2013 results. XV. CMB power spectra and likelihood / Planck collaboration
We present the Planck likelihood, a complete statistical description of the two-point correlation function of the CMB temperature fluctuations. We use this likelihood to derive the Planck CMB power spectrum over three decades in l, covering 2 <= l <= 2500 [...]
arXiv:1303.5075; CERN-PH-TH-2013-128; CERN-PH-TH-2013-128.- 2014-10-29 - 60 p. - Published in : Astron. Astrophys. 571 (2014) A15 Fulltext: PDF; External links: Preprint; EDP Sciences Free Access article
5.
Planck 2013 results. XII. Diffuse component separation / Planck Collaboration
Planck has produced detailed all-sky observations over nine frequency bands between 30 and 857 GHz. These observations allow robust reconstruction of the primordial cosmic microwave background (CMB) temperature fluctuations over nearly the full sky, as well as new constraints on Galactic foregrounds. [...]
arXiv:1303.5072; CERN-PH-TH-2013-125; CERN-PH-TH-2013-125.- 2014-10-29 - 31 p. - Published in : Astron. Astrophys. 571 (2014) A12 Fulltext: PDF; External links: Preprint; EDP Sciences Free Access article
6.
Planck 2013 results. V. LFI calibration / Planck Collaboration
We discuss the methods employed to photometrically calibrate the data acquired by the Low Frequency Instrument on Planck. Our calibration is based on a combination of the Orbital Dipole plus the Solar Dipole, caused respectively by the motion of the Planck spacecraft with respect to the Sun and by motion of the Solar System with respect to the CMB rest frame [...]
arXiv:1303.5066; CERN-PH-TH-2013-119; CERN-PH-TH-2013-119.- 2014-10-29 - 29 p. - Published in : Astron. Astrophys. 571 (2014) A5 Fulltext: PDF; External links: Preprint; EDP Sciences Free Access article
7.
Planck 2013 results. II. Low Frequency Instrument data processing / Planck Collaboration
We describe the data processing pipeline of the Planck Low Frequency Instrument (LFI) data processing centre (DPC) to create and characterize full-sky maps based on the first 15.5 months of operations at 30, 44 and 70 GHz. In particular, we discuss the various steps involved in reducing the data, starting from telemetry packets through to the production of cleaned, calibrated timelines and calibrated frequency maps. [...]
arXiv:1303.5063; CERN-PH-TH-2013-116; CERN-PH-TH-2013-116.- 2014-10-29 - 25 p. - Published in : Astron. Astrophys. 571 (2014) A2 Fulltext: PDF; External links: Preprint; EDP Sciences Free Access article
8.
Planck 2013 results. I. Overview of products and scientific results / Planck Collaboration
The ESA's Planck satellite, dedicated to studying the early universe, was launched on May 2009 and has been surveying the microwave and submillimetre sky since August 2009. In March 2013, ESA and the Planck Collaboration publicly released the initial cosmology products based on the first 15.5 months of Planck operations, along with a set of scientific and technical papers and a web-based explanatory supplement. [...]
arXiv:1303.5062; CERN-PH-TH-2013-115; CERN-PH-TH-2013-115.- 2014-10-29 - 48 p. - Published in : Astron. Astrophys. 571 (2014) A1 Fulltext: PDF; External links: Preprint; EDP Sciences Free Access article
9.
The pre-launch Planck Sky Model: a model of sky emission at submillimetre to centimetre wavelengths / Delabrouille, J. (APC, Paris) ; Betoule, M. ; Melin, J.-B. ; Miville-Deschenes, M.-A. ; Gonzalez-Nuevo, J. ; Jeune, M.Le (APC, Paris) ; Castex, G. ; de Zotti, G. ; Basak, S. (APC, Paris) ; Ashdown, M. et al.
We present the Planck Sky Model (PSM), a parametric model for the generation of all-sky, few arcminute resolution maps of sky emission at submillimetre to centimetre wavelengths, in both intensity and polarisation. Several options are implemented to model the cosmic microwave background, Galactic diffuse emission (synchrotron, free-free, thermal and spinning dust, CO lines), Galactic H-II regions, extragalactic radio sources, dusty galaxies, and thermal and kinetic Sunyaev-Zeldovich signals from clusters of galaxies. [...]
arXiv:1207.3675.- 2012 - 35 p. - Published in : Astron. Astrophys. 553 (2013) A96 External link: Preprint
10.
Single-field inflation constraints from CMB and SDSS data / Finelli, Fabio (IASF, Bologna ; INFN, Bologna) ; Hamann, Jan (Aarhus U.) ; Leach, Samuel M. (SISSA, Trieste ; INFN, Trieste) ; Lesgourgues, Julien (CERN ; LPHE, Lausanne ; Annecy, LAPTH)
We present constraints on canonical single-field inflation derived from WMAP five year, ACBAR, QUAD, BICEP data combined with the halo power spectrum from SDSS LRG7. Models with a non-scale-invariant spectrum and a red tilt n_s < 1 are now preferred over the Harrison-Zel'dovich model (n_s = 1, tensor-to-scalar ratio r = 0) at high significance. [...]
arXiv:0912.0522; CERN-PH-TH-2009-241; LAPTH-1368-09; CERN-PH-TH-2009-241; LAPTH-1368-09.- 2010 - 15 p. - Published in : JCAP 04 (2010) 011 Fulltext: PDF; External link: Preprint

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33 Leach, S
1 Leach, S J
15 Leach, S M
3 Leach, Sam
2 Leach, Samuel
1 Leach, Samuel M.
2 Leach, Sydney
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