Cosmology

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Why do extremely massive disc galaxies exist today?

(2020)

Authors:

Ryan A Jackson, Garreth Martin, Sugata Kaviraj, Clotilde Laigle, Julien Devriendt, Yohan Dubois, Christophe Pichon
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X-ray properties of He II 1640 emitting galaxies in VANDELS

ArXiv 2003.138 (2020)

Authors:

A Saxena, L Pentericci, D Schaerer, R Schneider, R Amorin, A Bongiorno, A Calabrò, M Castellano, A Cimatti, F Cullen, A Fontana, JPU Fynbo, N Hathi, DJ McLeod, M Talia, G Zamorani
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Axion oscillations in binary systems: angle-action surgery

ArXiv 2003.10552 (2020)

Authors:

Vincent Desjacques, Evgeni Grishin, Yonadav Barry Ginat
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Euclid preparation: VI. Verifying the performance of cosmic shear experiments

Astronomy and Astrophysics EDP Sciences 635:March 2020 (2020) A139

Authors:

P Paykari, Td Kitching, H Hoekstra, R Azzollini, Vf Cardone, M Cropper, Stephen Duncan, A Kannawadi, Lance Miller, H Aussel, If Conti, N Auricchio, M Baldi, S Bardelli, A Biviano, D Bonino, E Borsato, E Bozzo, E Branchini, S Brau-Nogue, M Brescia, J Brinchmann, C Burigana, S Camera, V Capobianco, C Carbone, J Carretero, Fj Castander, M Castellano, S Cavuoti, Y Charles, R Cledassou, C Colodro-Conde, G Congedo, C Conselice, L Conversi, Y Copin, J Coupon, Hm Courtois, A Da Silva, X Dupac, G Fabbian, S Farrens, Pg Ferreira, P Fosalba, N Fourmanoit, M Frailis, M Fumana, S Galeotta

Abstract:

Our aim is to quantify the impact of systematic effects on the inference of cosmological parameters from cosmic shear. We present an end-to-end approach that introduces sources of bias in a modelled weak lensing survey on a galaxy-by-galaxy level. Residual biases are propagated through a pipeline from galaxy properties (one end) through to cosmic shear power spectra and cosmological parameter estimates (the other end), to quantify how imperfect knowledge of the pipeline changes the maximum likelihood values of dark energy parameters. We quantify the impact of an imperfect correction for charge transfer inefficiency (CTI) and modelling uncertainties of the point spread function (PSF) for Euclid, and find that the biases introduced can be corrected to acceptable levels.
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Multiwavelength consensus of large-scale linear bias

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 493:1 (2020) 747-764

Authors:

Hengxing Pan, Danail Obreschkow, Cullan Howlett, Claudia del P Lagos, Pascal J Elahi, Carlton Baugh, Violeta Gonzalez-Perez
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