CERN Accelerating science

CERN Document Server 11 elementer funnet  1 - 10neste  gå til element: Søket tok 0.66 sekunder. 
1.
Updated design of the CMB polarization experiment satellite LiteBIRD / Sugai, H. (Tokyo U., IPMU) ; Ade, P.A.R. (Cardiff U.) ; Akiba, Y. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Alonso, D. (Oxford U.) ; Arnold, K. (UC, San Diego) ; Aumont, J. (IRAP, Toulouse) ; Austermann, J. (NIST, Boulder) ; Baccigalupi, C. (CNR, Italy ; INFN, Trieste ; SISSA, Trieste) ; Banday, A.J. (IRAP, Toulouse) ; Banerji, R. (Oslo U.) et al.
Recent 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 CMB polarization experiments. LiteBIRD is in the most advanced phase among such future satellites, targeting its launch in Japanese Fiscal Year 2027 (2027FY) with JAXA's H3 rocket. [...]
arXiv:2001.01724.- 2020-01-27 - 11 p. - Published in : J. Low Temp. Phys. 199 (2020) 1107-1117 Fulltext: s10909-019-02329-w - PDF; 2001.01724 - PDF;
2.
Constraining graviton non-Gaussianity through the CMB bispectra / De Luca, Valerio (Geneva U., CAP) ; Franciolini, Gabriele (Geneva U., CAP) ; Kehagias, Alex (Natl. Tech. U., Athens) ; Riotto, Antonio (Geneva U., CAP ; CERN) ; Shiraishi, Maresuke (Kagawa U.)
Tensor non-Gaussianities are a key ingredient to test the symmetries and the presence of higher spin fields during the inflationary epoch. Indeed, the shape of the three point correlator of the graviton is totally fixed by the symmetries of the de Sitter stage and, in the case of parity conservation, gets contributions only from the ordinary gravity action plus a higher derivative term called the (Weyl)$^3$ action. [...]
arXiv:1908.00366.- 2019-09-25 - 8 p. - Published in : Phys. Rev. D 100 (2019) 063535 Fulltext: PDF; Fulltext from publisher: PDF;
3.
Planck 2018 results. I. Overview and the cosmological legacy of Planck / Planck Collaboration
The European Space Agency's Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between 12 August 2009 and 23 October 2013, producing deep, high-resolution, all-sky maps in nine frequency bands from 30 to 857GHz. [...]
arXiv:1807.06205.- 2020-09-01 - 56 p. - Published in : Astron. Astrophys. 641 (2020) A1 Fulltext: 1807.06205 - PDF; arXiv:1807.06205 - PDF;
4.
Planck 2015. XX. Constraints on inflation / Planck Collaboration
We present the implications for cosmic inflation of the Planck measurements of the cosmic microwave background (CMB) anisotropies in both temperature and polarization based on the full Planck survey. The Planck full mission temperature data and a first release of polarization data on large angular scales measure the spectral index of curvature perturbations to be $n_\mathrm{s} = 0.968 \pm 0.006$ and tightly constrain its scale dependence to $d n_s/d \ln k =-0.003 \pm 0.007$ when combined with the Planck lensing likelihood. [...]
arXiv:1502.02114.- 2016-09-20 - 65 p. - Published in : Astron. Astrophys. 594 (2016) A20 Fulltext: PDF; External link: Preprint
5.
Planck 2015 results. XIX. Constraints on primordial magnetic fields / Planck Collaboration
We predict and investigate four types of imprint of a stochastic background of primordial magnetic fields (PMFs) on the cosmic microwave background (CMB) anisotropies: the impact of PMFs on the CMB spectra; the effect on CMB polarization induced by Faraday rotation; magnetically-induced non-Gaussianities; and the magnetically-induced breaking of statistical isotropy. Overall, Planck data constrain the amplitude of PMFs to less than a few nanogauss. [...]
arXiv:1502.01594.- 2016-09-20 - 27 p. - Published in : Astron. Astrophys. 594 (2016) A19 Fulltext: PDF; External link: Preprint
6.
Planck 2015 results. XVII. Constraints on primordial non-Gaussianity / Planck Collaboration
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, and modal - we obtain consistent values for the local, equilateral, and orthogonal bispectrum amplitudes, quoting as our final result from temperature alone fNL^local=2.5+\-5.7, fNL^equil=-16+\-70 and fNL^ortho=-34+\-33(68%CL) [...]
arXiv:1502.01592.- 2016-09-20 - 66 p. - Published in : Astron. Astrophys. 594 (2016) A17 Fulltext: PDF; External link: Preprint
7.
Planck 2015 results. I. Overview of products and scientific results / Planck Collaboration
The European Space Agency's Planck satellite, dedicated to studying the early Universe and its subsequent evolution, was launched 14~May 2009 and scanned the microwave and submillimetre sky continuously between 12~August 2009 and 23~October 2013. In February~2015, ESA and the Planck Collaboration released the second set of cosmology products based on data from the entire Planck mission, including both temperature and polarization, along with a set of scientific and technical papers and a web-based explanatory supplement. [...]
arXiv:1502.01582.- 2016-09-20 - 38 p. - Published in : Astron. Astrophys. 594 (2016) A1 Fulltext: PDF; External link: Preprint
8.
Control of Secondary Flow in a Double-inlet Pulse Tube Refrigerator / Shiraishi, M ; Murakami, M ; Nakano, A ; Iida, T
2006 - Published in : AIP Conf. Proc.: 823 (2006) , pp. 27-34 External link: Published version from AIP
In : Conference on Cryogenic Engineering and on International Cryogenic Materials, Keystone, CO, USA, 29 Aug - 2 Sep 2005, pp.27-34
9.
Development of non-magnetic high manganese cryogenic steel for the construction of LHC project's superconducting magnet / Ozaki, Y ; Furukimi, O ; Kakihara, S ; Shiraishi, M ; Morito, N ; Nohara, K
High manganese steel (KHMN30L) as a cryogenic nonmagnetic material has been developed by Kawasaki Steel Corporation, which is designed for structural material for superconducting magnet in particle accelerator system. This steel satisfies the following requirements for the present use. [...]
2002 - Published in : IEEE Trans. Appl. Supercond. 12 (2002) 1248-51
In : 17th International Conference on Magnet Technology, CERN, Geneva, Switzerland, 24 - 28 Sep 2001, pp.1248-51
10.
Development Of An All-metal Vacuum Bellows Following Twist Motion / Suetsugu, Y ; Shiraishi, Masamitsu ; Mishiba, T ; Ohno, Y
KEK-99-39.
- 1999.
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