Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/220980
Title: Euclid preparation - XXXIV. The effect of linear redshift-space distortions in photometric galaxy clustering and its cross-correlation with cosmic shear
Author: Tanidis, K.
Cardone, V.F.
Martinelli, M.
Tutusaus, I.
Camera, S.
Aghanim, N.
Amara, A.
Andreon, S.
Auricchio, N.
Baldi, M.
Bardelli, S.
de la Torre, S.
De Lucia, G.
Desprez, G.
Di Domizio, S.
Dole, H.
Carretero, Jorge
Escartin Vigo, J.A.
Escoffier, S.
Ferreira, P.G.
Nucita, A.A.
Mei, S.
Ferrero, I.
Finelli, F.
Gabarra, L.
García-Bellido, J.
Gaztanaga, E.
Giacomini, F.
Gozaliasl, G.
Casas, S.
Hildebrandt, H.
Ilić, S.
Meneghetti, M.
Cavuoti, S.
Kajava, J.J.E.
Kansal, V.
Kirkpatrick, C.C.
Legrand, L.
Loureiro, Ana
Macias-Perez, J.
Magliocchetti, M.
Mainetti, G.
Castellano, M.
Meylan, G.
Maoli, R.
Schirmer, M.
Pöntinen, M.
Patrizii, L.
Pezzotta, A.
Popa, V.
Potter, D.
Sánchez, A.G.
Sakr, Z.
Schewtschenko, J.A.
Moresco, M.
Schneider, A.
Sereno, M.
Schneider, P.
Cimatti, A.
Simon, P.
Spurio Mancini, A.
Steinwagner, J.
Tewes, M.
Teyssier, R.
Toft, Søren
Moscardini, L.
Valiviita, J.
Viel, M.
Linke, L.
Secroun, A.
Cledassou, R.
Congedo, G.
Conversi, L.
Copin, Y.
Corcione, L.
Courbin, Frédéric
Munari, E.
Courtois, H.M.
Da Silvay, A.
Degaudenzi, H.
Dinis, J.
Seidel, G.
Dubath, F.
Dupac, X.
Dusini, S.
Farina, M.
Farrens, S.
Niemi, S.-M.
Ferriol, S.
Fosalba, Pablo
Frailis, M.
Franceschi, E.
Fumana, M.
Serrano, Susana
Galeotta, S.
Garilli, B.
Gillard, W.
Gillis, B.
Padilla, C.
Giocoli, C.
Grazian, A.
Grupp, F.
Guzzo, L.
Haugan, S.V.H.
Holmes, W.
Sirignano, C.
Hook, I.
Hornstrup, A.
Jahnke, K.
Paltani, S.
Joachimi, B.
Keihanen, E.
Kermiche, S.
Kiessling, A.
Kunz, M.
Kurki-Suonio, H.
Lilje, P.B.
Sirri, G.
Lindholm, V.
Lloro, I.
Tallada-Crespí, P.
Maiorano, E.
Mansutti, O.
Marggraf, O.
Markovic, K.
Martinet, N.
Marulli, F.
Massey, R.
Maurogordato, S.
Stanco, L.
Medinaceli, E.
Martins, C.J.A.P.
Pasian, F.
Pedersen, K.
Percival, W.J.
Pettorino, V.
Pires, S.
Polenta, G.
Pollack, J.E.
Poncet, M.
Popa, L.A.
Raison, F.
Matthew, S.
Taylor, A.N.
Renzi, A.
Rhodes, J.
Riccio, G.
Romelli, E.
Roncarelli, M.
Rossetti, E.
Saglia, R.
Sapone, D.
Sartoris, B.
Maurin, L.
Euclid Collaboration
Branchini, E.
Tereno, I.
Toledo-Moreo, R.
Torradeflot, F.
Valentijn, E.A.
Valenziano, L.
Vassallo, T.
Veropalumbo, A.
Wang, Yan
Metcalf, R.B.
Weller, J.
Zamorani, G.
Brescia, M.
Zoubian, J.
Zucca, E.
Biviano, A.
Boucaud, A.
Bozzo, E.
Colodro-Conde, C.
Di Ferdinando, D.
Migliaccio, Marina
Farinelli, R.
Graciá-Carpio, J.
Marcin, S.
Brinchmann, J.
Mauri, Nuria
Scottez, V.
Tenti, M.
Tramacere, A.
Akrami, Y.
Allevato, V.
Monaco, P.
Baccigalupi, C.
Balaguera-Antolínez, A.
Ballardini, M.
Benielli, D.
Capobianco, V.
Bernardeau, F.
Borgani, S.
Borlaff, A.S.
Burigana, C.
Cabanac, R.
Morgante, G.
Cappi, A.
Carvalho, C.S.
Castignani, G.
Castro, T.
Cañas-Herrera, G.
Carbone, C.
Chambers, K.C.
Cooray, A.R.
Coupon, J.
Díaz-Sánchez, A.
Nadathur, S.
Davini, S.
Keywords: Cosmologia
Univers
Fotometria
Cosmology
Universe
Photometry
Issue Date: 2024
Publisher: EDP Sciences
Abstract: Context. The cosmological surveys that are planned for the current decade will provide us with unparalleled observations of the distribution of galaxies on cosmic scales, by means of which we can probe the underlying large-scale structure (LSS) of the Universe. This will allow us to test the concordance cosmological model and its extensions. However, precision pushes us to high levels of accuracy in the theoretical modelling of the LSS observables, so that no biases are introduced into the estimation of the cosmological parameters. In particular, effects such as redshift-space distortions (RSD) can become relevant in the computation of harmonic-space power spectra even for the clustering of the photometrically selected galaxies, as has previously been shown in literature. Aims. In this work, we investigate the contribution of linear RSD, as formulated in the Limber approximation by a previous work, in forecast cosmological analyses with the photometric galaxy sample of the Euclid survey. We aim to assess their impact and to quantify the bias on the measurement of cosmological parameters that would be caused if this effect were neglected. Methods. We performed this task by producing mock power spectra for photometric galaxy clustering and weak lensing, as is expected to be obtained from the Euclid survey. We then used a Markov chain Monte Carlo approach to obtain the posterior distributions of cosmological parameters from these simulated observations. Results. When the linear RSD is neglected, significant biases are caused when galaxy correlations are used alone and when they are combined with cosmic shear in the so-called 3 × 2 pt approach. These biases can be equivalent to as much as 5σ when an underlying ΛCDM cosmology is assumed. When the cosmological model is extended to include the equation-of-state parameters of dark energy, the extension parameters can be shifted by more than 1σ. 
Note: Reproducció del document publicat a: https://doi.org/10.1051/0004-6361/202347870
It is part of: Astronomy & Astrophysics, 2024, vol. 683, num.A17
URI: https://hdl.handle.net/2445/220980
Related resource: https://doi.org/10.1051/0004-6361/202347870
ISSN: 0004-6361
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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