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  Euclid preparation: VII. Forecast validation for Euclid cosmological probes

Blanchard, A., Camera, S., Carbone, C., Cardone, V. F., Casas, S., Clesse, S., et al. (2020). Euclid preparation: VII. Forecast validation for Euclid cosmological probes. Astronomy and Astrophysics, 642: A191. doi:10.1051/0004-6361/202038071.

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Blanchard, A., Author
Camera, S., Author
Carbone, C., Author
Cardone, V. F., Author
Casas, S., Author
Clesse, S., Author
Ilić, S., Author
Kilbinger, M., Author
Kitching, T., Author
Kunz, M., Author
Lacasa, F., Author
Linder, E., Author
Majerotto, E., Author
Markovič, K., Author
Martinelli, M., Author
Pettorino, V., Author
Pourtsidou, A., Author
Sakr, Z., Author
Sanchez, A. G.1, Author              
Sapone, D., Author
Tutusaus, I., AuthorYahia-Cherif, S., AuthorYankelevich, V., AuthorAndreon, S., AuthorAussel, H., AuthorBalaguera-Antolínez, A., AuthorBaldi, M., AuthorBardelli, S., AuthorBender, R.1, Author              Biviano, A., AuthorBonino, D., AuthorBoucaud, A., AuthorBozzo, E., AuthorBranchini, E., AuthorBrau-Nogue, S., AuthorBrescia, M., AuthorBrinchmann, J., AuthorBurigana, C., AuthorCabanac, R., AuthorCapobianco, V., AuthorCappi, A., AuthorCarretero, J., AuthorCarvalho, C. S., AuthorCasas, R., AuthorCastander, F. J., AuthorCastellano, M., AuthorCavuoti, S., AuthorCimatti, A., AuthorCledassou, R., AuthorColodro-Conde, C., AuthorCongedo, G., AuthorConselice, C. J., AuthorConversi, L., AuthorCopin, Y., AuthorCorcione, L., AuthorCoupon, J., AuthorCourtois, H. M., AuthorCropper, M., AuthorSilva, A. Da, Authorde la Torre, S., AuthorFerdinando, D. Di, AuthorDubath, F., AuthorDucret, F., AuthorDuncan, C. A. J., AuthorDupac, X., AuthorDusini, S., AuthorFabbian, G., AuthorFabricius, M.1, Author              Farrens, S., AuthorFosalba, P., AuthorFotopoulou, S., AuthorFourmanoit, N., AuthorFrailis, M., AuthorFranceschi, E., AuthorFranzetti, P., AuthorFumana, M., AuthorGaleotta, S., AuthorGillard, W., AuthorGillis, B., AuthorGiocoli, C., AuthorGómez-Alvarez, P., AuthorGraciá-Carpio, J.2, Author              Grupp, F.1, Author              Guzzo, L., AuthorHoekstra, H., AuthorHormuth, F., AuthorIsrael, H., AuthorJahnke, K., AuthorKeihanen, E., AuthorKermiche, S., AuthorKirkpatrick, C. C., AuthorKohley, R., AuthorKubik, B., AuthorKurki-Suonio, H., AuthorLigori, S., AuthorLilje, P. B., AuthorLloro, I., AuthorMaino, D., AuthorMaiorano, E., AuthorMarggraf, O., AuthorMartinet, N., AuthorMarulli, F., AuthorMassey, R., AuthorMedinaceli, E., AuthorMei, S., AuthorMellier, Y., AuthorMetcalf, B., AuthorMetge, J. J., AuthorMeylan, G., AuthorMoresco, M., AuthorMoscardini, L., AuthorMunari, E., AuthorNichol, R. C., AuthorNiemi, S., AuthorNucita, A. A., AuthorPadilla, C., AuthorPaltani, S., AuthorPasian, F., AuthorPercival, W. J., AuthorPires, S., AuthorPolenta, G., AuthorPoncet, M., AuthorPozzetti, L., AuthorRacca, G. D., AuthorRaison, F.1, Author              Renzi, A., AuthorRhodes, J., AuthorRomelli, E., AuthorRoncarelli, M., AuthorRossetti, E., AuthorSaglia, R.1, Author              Schneider, P., AuthorScottez, V., AuthorSecroun, A., AuthorSirri, G., AuthorStanco, L., AuthorStarck, J.-L., AuthorSureau, F., AuthorTallada-Crespí, P., AuthorTavagnacco, D., AuthorTaylor, A. N., AuthorTenti, M., AuthorTereno, I., AuthorToledo-Moreo, R., AuthorTorradeflot, F., AuthorValenziano, L., AuthorVassallo, T., AuthorKleijn, G. A. Verdoes, AuthorViel, M., AuthorWang, Y., AuthorZacchei, A., AuthorZoubian, J., AuthorZucca, E., Author more..
Affiliations:
1Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              
2Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159889              

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 Abstract: Aims. The Euclid space telescope will measure the shapes and redshifts of galaxies to reconstruct the expansion history of the Universe and the growth of cosmic structures. The estimation of the expected performance of the experiment, in terms of predicted constraints on cosmological parameters, has so far relied on various individual methodologies and numerical implementations, which were developed for different observational probes and for the combination thereof. In this paper we present validated forecasts, which combine both theoretical and observational ingredients for different cosmological probes. This work is presented to provide the community with reliable numerical codes and methods for Euclid cosmological forecasts. Methods. We describe in detail the methods adopted for Fisher matrix forecasts, which were applied to galaxy clustering, weak lensing, and the combination thereof. We estimated the required accuracy for Euclid forecasts and outline a methodology for their development. We then compare and improve different numerical implementations, reaching uncertainties on the errors of cosmological parameters that are less than the required precision in all cases. Furthermore, we provide details on the validated implementations, some of which are made publicly available, in different programming languages, together with a reference training-set of input and output matrices for a set of specific models. These can be used by the reader to validate their own implementations if required. Results. We present new cosmological forecasts for Euclid. We find that results depend on the specific cosmological model and remaining freedom in each setting, for example flat or non-flat spatial cosmologies, or different cuts at non-linear scales. The numerical implementations are now reliable for these settings. We present the results for an optimistic and a pessimistic choice for these types of settings. We demonstrate that the impact of cross-correlations is particularly relevant for models beyond a cosmological constant and may allow us to increase the dark energy figure of merit by at least a factor of three.

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Language(s): eng - English
 Dates: 2020-10-20
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1051/0004-6361/202038071
Other: LOCALID: 3284736
 Degree: -

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Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
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Publ. Info: France : EDP Sciences S A
Pages: - Volume / Issue: 642 Sequence Number: A191 Start / End Page: - Identifier: ISSN: 1432-0746
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1