Results 221 to 230 of about 164,088 (234)
Some of the next articles are maybe not open access.

Euclid preparation. LXXIX. Using mock low surface brightness dwarf galaxies to probe Euclid Wide Survey detection capabilities

Astronomy & Astrophysics
Local Universe dwarf galaxies can serve as both cosmological and mass assembly probes. Deep surveys have enabled the study of these objects down to the low surface brightness (LSB) regime.
Euclid Collaboration M. Urbano   +499 more
semanticscholar   +1 more source

Euclid preparation. LVI. Sensitivity to non-standard particle dark matter models

Astronomy & Astrophysics
The mission of the European Space Agency will provide weak gravitational lensing and galaxy clustering surveys that can be used to constrain the standard cosmological model and its extensions, with an opportunity to test the properties of dark matter ...
Euclid Collaboration J. Lesgourgues   +499 more
semanticscholar   +1 more source

Euclid preparation. LXXI. Simulations and nonlinearities beyond LambdaCDM. 3. Constraints on f(R) models from the photometric primary probes

Astronomy & Astrophysics
We study the constraint on f(R) gravity that can be obtained by photometric primary probes of the Euclid mission. Our focus is the dependence of the constraint on the theoretical modelling of the nonlinear matter power spectrum.
Euclid Collaboration K. Koyama   +499 more
semanticscholar   +1 more source

Euclid preparation. LXIX. The impact of relativistic redshift-space distortions on two-point clustering statistics from the Euclid wide spectroscopic survey

Astronomy & Astrophysics
Measurements of galaxy clustering are affected by redshift-space distortions (RSDs). Peculiar velocities, gravitational lensing, and other light-cone projection effects modify the observed redshifts, fluxes, and sky positions of distant light sources. We
Euclid Collaboration M. Y. Elkhashab   +499 more
semanticscholar   +1 more source

Euclid preparation. LIII. LensMC, weak lensing cosmic shear measurement with forward modelling and Markov Chain Monte Carlo sampling

Astronomy & Astrophysics
is a weak lensing shear measurement method developed for and Stage-IV surveys. It is based on forward modelling in order to deal with convolution by a point spread function (PSF) with comparable size to many galaxies, sampling the posterior distribution ...
Euclid Collaboration G. Congedo   +499 more
semanticscholar   +1 more source

Euclid preparation. LV. Exploring the properties of proto-clusters in the Simulated Euclid Wide Survey

Astronomy & Astrophysics
Galaxy proto-clusters are receiving increased interest since most of the processes shaping the structure of clusters of galaxies and their galaxy population happen at the early stages of their formation.
Euclid Collaboration H. Bohringer   +499 more
semanticscholar   +1 more source

Euclid preparation: LXVII. Deep learning true galaxy morphologies for weak lensing shear bias calibration

Astronomy & Astrophysics
To date, galaxy image simulations for weak lensing surveys usually approximate the light profiles of all galaxies as a single or double Sérsic profile, neglecting the influence of galaxy substructures and morphologies deviating from such a simplified ...
Euclid Collaboration B. Csizi   +499 more
semanticscholar   +1 more source

Euclid preparation. Simulations and non-linearities beyond Lambda cold dark matter. I. Numerical methods and validation

Astronomy & Astrophysics
To constrain cosmological models beyond Lambda CDM, the development of the analysis pipeline requires simulations that capture the non-linear phenomenology of such models.
Euclid Collaboration J. Adamek   +499 more
semanticscholar   +1 more source

Euclid preparation. LXV. Determining the weak lensing mass accuracy and precision for galaxy clusters

Astronomy & Astrophysics
The ability to measure unbiased weak-lensing (WL) masses is a key ingredient to exploit galaxy clusters as a competitive cosmological probe with the ESA survey or future missions.
Euclid Collaboration L. Ingoglia   +499 more
semanticscholar   +1 more source

Euclid preparation. LVII. Observational expectations for redshift z<7 active galactic nuclei in the Euclid Wide and Deep surveys

Astronomy & Astrophysics
We forecast the expected population of active galactic nuclei (AGN) observable in the Euclid Wide Survey (EWS) and Euclid Deep Survey (EDS). Starting from an X-ray luminosity function (XLF), we generated volume-limited samples of the AGN expected in the ...
Euclid Collaboration M. Selwood   +499 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy