79 research outputs found

    La fortification

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    Copia digital. Madrid : Ministerio de Cultura. Subdirección General de Coordinación Bibliotecaria, 2009El pie de imp. consta en la 2ª parteSign.: )(\p6\s, A-R\p4\s, S\p3\sPort. calc. arquitectónica: "M. de Betune. J. Briot fecit"Ilustraciones calc., grabados con piezas de artillería y fortificacione

    Exploring Cosmic Origins with CORE: Cosmological Parameters

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    We forecast the main cosmological parameter constraints achievable with theCORE space mission which is dedicated to mapping the polarisation of the CosmicMicrowave Background (CMB). CORE was recently submitted in response to ESA'sfifth call for medium-sized mission proposals (M5). Here we report the resultsfrom our pre-submission study of the impact of various instrumental options, inparticular the telescope size and sensitivity level, and review the great,transformative potential of the mission as proposed. Specifically, we assessthe impact on a broad range of fundamental parameters of our Universe as afunction of the expected CMB characteristics, with other papers in the seriesfocusing on controlling astrophysical and instrumental residual systematics. Inthis paper, we assume that only a few central CORE frequency channels areusable for our purpose, all others being devoted to the cleaning ofastrophysical contaminants. On the theoretical side, we assume LCDM as ourgeneral framework and quantify the improvement provided by CORE over thecurrent constraints from the Planck 2015 release. We also study the jointsensitivity of CORE and of future Baryon Acoustic Oscillation and Large ScaleStructure experiments like DESI and Euclid. Specific constraints on the physicsof inflation are presented in another paper of the series. In addition to thesix parameters of the base LCDM, which describe the matter content of aspatially flat universe with adiabatic and scalar primordial fluctuations frominflation, we derive the precision achievable on parameters like thosedescribing curvature, neutrino physics, extra light relics, primordial heliumabundance, dark matter annihilation, recombination physics, variation offundamental constants, dark energy, modified gravity, reionization and cosmicbirefringence. (ABRIDGED

    CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

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    CMB-S4---the next-generation ground-based cosmic microwave background (CMB) experiment---is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the Universe, from the highest energies at the dawn of time through the growth of structure to the present day. Among the science cases pursued with CMB-S4, the quest for detecting primordial gravitational waves is a central driver of the experimental design. This work details the development of a forecasting framework that includes a power-spectrum-based semi-analytic projection tool, targeted explicitly towards optimizing constraints on the tensor-to-scalar ratio, rr, in the presence of Galactic foregrounds and gravitational lensing of the CMB. This framework is unique in its direct use of information from the achieved performance of current Stage 2--3 CMB experiments to robustly forecast the science reach of upcoming CMB-polarization endeavors. The methodology allows for rapid iteration over experimental configurations and offers a flexible way to optimize the design of future experiments given a desired scientific goal. To form a closed-loop process, we couple this semi-analytic tool with map-based validation studies, which allow for the injection of additional complexity and verification of our forecasts with several independent analysis methods. We document multiple rounds of forecasts for CMB-S4 using this process and the resulting establishment of the current reference design of the primordial gravitational-wave component of the Stage-4 experiment, optimized to achieve our science goals of detecting primordial gravitational waves for r>0.003r > 0.003 at greater than 5σ5\sigma, or, in the absence of a detection, of reaching an upper limit of r<0.001r < 0.001 at 95%95\% CL.Comment: 24 pages, 8 figures, 9 tables, submitted to ApJ. arXiv admin note: text overlap with arXiv:1907.0447

    CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

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    Abstract: CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the universe. Among the science cases pursued with CMB-S4, the quest for detecting primordial gravitational waves is a central driver of the experimental design. This work details the development of a forecasting framework that includes a power-spectrum-based semianalytic projection tool, targeted explicitly toward optimizing constraints on the tensor-to-scalar ratio, r, in the presence of Galactic foregrounds and gravitational lensing of the CMB. This framework is unique in its direct use of information from the achieved performance of current Stage 2–3 CMB experiments to robustly forecast the science reach of upcoming CMB-polarization endeavors. The methodology allows for rapid iteration over experimental configurations and offers a flexible way to optimize the design of future experiments, given a desired scientific goal. To form a closed-loop process, we couple this semianalytic tool with map-based validation studies, which allow for the injection of additional complexity and verification of our forecasts with several independent analysis methods. We document multiple rounds of forecasts for CMB-S4 using this process and the resulting establishment of the current reference design of the primordial gravitational-wave component of the Stage-4 experiment, optimized to achieve our science goals of detecting primordial gravitational waves for r > 0.003 at greater than 5σ, or in the absence of a detection, of reaching an upper limit of r < 0.001 at 95% CL

    Refutation de quelques propositions du livre de Monsieur de l'Escale, de la quadrature du cercle par luy intitulé, Cyclometrica elementa duo

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    par I. Errard de Barle-duc, ingenieur de sa majestéBogensignaturen: A

    La Fortification Reduicte En Art Et Demonstree

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    LA FORTIFICATION REDUICTE EN ART ET DEMONSTREE La Fortification Reduicte En Art Et Demonstree ( - ) Einband ( - ) Titelseite ([1]r) Av Tresillvstre et Tresgenerevx Seignevr Wolffgang Ernst De Isenbvrg, Conte à Bvdingen, &c. Mon tresgracieux Seigneur. ([2]r) Preface à la noblesse francoise. ([3]r) Av Lectevr. ([4]r) Le premier livre de la fortification demontree et reduicte en art. (1) Le seconde livre. (24) Le troisieme livre. (50) Le quatrieme livre. (83) Abbildung ([1]v

    Lettre de Jean-Baptiste Colbert (surintendant des Bâtiments, arts et manufactures de France) à Charles Errard (directeur de l'Académie française à Rome) datée du 28 juillet 1683

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    Lettre de Jean-Baptiste Colbert (surintendant des Bâtiments, arts et manufactures de France) à Charles Errard (directeur de l'Académie française à Rome) datée du 28 juillet 1683. In: Correspondance administrative sous le règne de Louis XIV, recueillie et mise en ordre par G. B. Depping. Tome IV et dernier. Travaux publics – Affaires religieuses – Protestants – Sciences, lettres et arts – Pièces diverses. Paris : Imprimerie nationale, 1855. pp. 577-578

    Lettre de Jean-Baptiste Colbert (surintendant des Bâtiments, arts et manufactures de France) à Charles Errard (directeur de l'Académie française à Rome) datée du 20 novembre 1671

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    Lettre de Jean-Baptiste Colbert (surintendant des Bâtiments, arts et manufactures de France) à Charles Errard (directeur de l'Académie française à Rome) datée du 20 novembre 1671. In: Correspondance administrative sous le règne de Louis XIV, recueillie et mise en ordre par G. B. Depping. Tome IV et dernier. Travaux publics – Affaires religieuses – Protestants – Sciences, lettres et arts – Pièces diverses. Paris : Imprimerie nationale, 1855. p. 573

    Lettre de Jean-Baptiste Colbert (surintendant des Bâtiments, arts et manufactures de France) à Charles Errard (directeur de l'Académie française à Rome) datée du 12 août 1682

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    Lettre de Jean-Baptiste Colbert (surintendant des Bâtiments, arts et manufactures de France) à Charles Errard (directeur de l'Académie française à Rome) datée du 12 août 1682. In: Correspondance administrative sous le règne de Louis XIV, recueillie et mise en ordre par G. B. Depping. Tome IV et dernier. Travaux publics – Affaires religieuses – Protestants – Sciences, lettres et arts – Pièces diverses. Paris : Imprimerie nationale, 1855. pp. 576-577

    Lettre de Charles Errard (directeur de l'académie de Rome) à Jean-Baptiste Colbert (surintendant des Bâtiments, arts et manufactures de France) datée du 03 avril 1669, à Rome

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    Lettre de Charles Errard (directeur de l'académie de Rome) à Jean-Baptiste Colbert (surintendant des Bâtiments, arts et manufactures de France) datée du 03 avril 1669, à Rome. In: Correspondance administrative sous le règne de Louis XIV, recueillie et mise en ordre par G. B. Depping. Tome IV et dernier. Travaux publics – Affaires religieuses – Protestants – Sciences, lettres et arts – Pièces diverses. Paris : Imprimerie nationale, 1855. pp. 565-566
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