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Galaxies flowing in the oriented saddle frame of the cosmic web
Kraljic, K,Pichon, C,Dubois, Y,Codis, S,Cadiou, C,Devriendt, J,Musso, M,Welker, C,Arnouts, S,Hwang, H S,Laigle, C,Peirani, S,Slyz, A,Treyer, M,Vibert, D Oxford University Press 2019 Monthly notices of the Royal Astronomical Society Vol.483 No.3
Galaxy–halo alignments in the Horizon-AGN cosmological hydrodynamical simulation
Chisari, N. E.,Koukoufilippas, N.,Jindal, A.,Peirani, S.,Beckmann, R. S.,Codis, S.,Devriendt, J.,Miller, L.,Dubois, Y.,Laigle, C.,Slyz, A.,Pichon, C. Oxford University Press 2017 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.472 No.1
Uhlemann, C,Pajer, E,Pichon, C,Nishimichi, T,Codis, S,Bernardeau, F Oxford University Press 2018 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.474 No.3
<P>Non-Gaussianities of dynamical origin are disentangled from primordial ones using the formalism of large deviation statistics with spherical collapse dynamics. This is achieved by relying on accurate analytical predictions for the one-point probability distribution function and the two-point clustering of spherically averaged cosmic densities (sphere bias). Sphere bias extends the idea of halo bias to intermediate density environments and voids as underdense regions. In the presence of primordial non-Gaussianity, sphere bias displays a strong scale dependence relevant for both high- and low-density regions, which is predicted analytically. The statistics of densities in spheres are built to model primordial non-Gaussianity via an initial skewness with a scale dependence that depends on the bispectrum of the underlying model. The analytical formulas with the measured non-linear dark matter variance as input are successfully tested against numerical simulations. For local non-Gaussianity with a range from f(NL) = -100 to + 100, they are found to agree within 2 per cent or better for densities rho is an element of [0.5, 3] in spheres of radius 15 Mpc h(-1) down to z = 0.35. The validity of the large deviation statistics formalism is thereby established for all observationally relevant local-type departures from perfectly Gaussian initial conditions. The corresponding estimators for the amplitude of the non-linear variance sigma(8) and primordial skewness fNL are validated using a fiducial joint maximum likelihood experiment. The influence of observational effects and the prospects for a future detection of primordial non-Gaussianity from joint one-and two-point densities-in-spheres statistics are discussed.</P>
Galaxy evolution in the metric of the cosmic web
Kraljic, K.,Arnouts, S.,Pichon, C.,Laigle, C.,de la Torre, S.,Vibert, D.,Cadiou, C.,Dubois, Y.,Treyer, M.,Schimd, C.,Codis, S.,de Lapparent, V.,Devriendt, J.,Hwang, H. S.,Le Borgne, D.,Malavasi, N.,Mi Oxford University Press 2018 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.474 No.1
CODY, BRIAN J. 한국국제경제학회 1990 International Economic Journal Vol.4 No.2
This study employs daily data to examine the effects on Eurocurrency and onshore returns of the May 21, 1981 imposition of exchange controls by French President Mitterand. Prior to this time, transaction costs explain the average onshore deviations from covered parity; however, these averages ignore short-lived political risk premia which emerged just before the imposition of controls. As expected, there is no evidence of political risk on Eurocurrency markets. Yet when exchange controls were in effect, premia in excess of transaction costs surfaced on nonfranc Eurocurrency deposits at the time of devaluations of the franc within the EMS.