T. Vassallo
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View article: Euclid Quick Data Release (Q1). From images to multi-wavelength catalogues: The Euclid MERge Processing Function
Euclid Quick Data Release (Q1). From images to multi-wavelength catalogues: The Euclid MERge Processing Function Open
The Euclid satellite is an ESA mission that was launched in July 2023. Euclid is working in its regular observing mode with the target of observing an area of $14,000 deg ^2$ with two instruments, the Visible Camera (VIS) and the Near IR S…
View article: Euclid preparation. XXIV. Calibration of the halo mass function in\n $\\Lambda(\\nu)$CDM cosmologies
Euclid preparation. XXIV. Calibration of the halo mass function in\n $\\Lambda(\\nu)$CDM cosmologies Open
Euclid's photometric galaxy cluster survey has the potential to be a very\ncompetitive cosmological probe. The main cosmological probe with observations\nof clusters is their number count, within which the halo mass function (HMF) is\na ke…
View article: Euclid: Estimation of the Impact of Correlated Readout Noise for Flux Measurements with the Euclid NISP Instrument*
Euclid: Estimation of the Impact of Correlated Readout Noise for Flux Measurements with the Euclid NISP Instrument* Open
The Euclid satellite, to be launched by ESA in 2022, will be a major instrument for cosmology for the next decades. Euclid is composed of two instruments: The Visible instrument and the Near Infrared Spectrometer and Photometer (NISP). In …
View article: <i>Euclid</i>: Constraining dark energy coupled to electromagnetism using astrophysical and laboratory data
<i>Euclid</i>: Constraining dark energy coupled to electromagnetism using astrophysical and laboratory data Open
In physically realistic, scalar-field-based dynamical dark energy models (including, e.g., quintessence), one naturally expects the scalar field to couple to the rest of the model’s degrees of freedom. In particular, a coupling to the elec…
View article: Euclid: Forecasts for k-cut 3×2 Point Statistics
Euclid: Forecasts for k-cut 3×2 Point Statistics Open
Modelling uncertainties at small scales, i.e. high $k$ in the power spectrum $P(k)$, due to baryonic feedback, nonlinear structure growth and the fact that galaxies are biased tracers poses a significant obstacle to fully leverage the cons…
View article: <i>Euclid</i> : Effects of sample covariance on the number counts of galaxy clusters
<i>Euclid</i> : Effects of sample covariance on the number counts of galaxy clusters Open
Aims. We investigate the contribution of shot-noise and sample variance to uncertainties in the cosmological parameter constraints inferred from cluster number counts, in the context of the Euclid survey. Methods. By analysing 1000 Euclid …
View article: Euclid: Forecasts for $k$-cut $3 \times 2$ Point Statistics
Euclid: Forecasts for $k$-cut $3 \times 2$ Point Statistics Open
Modelling uncertainties at small scales, i.e. high $k$ in the power spectrum $P(k)$, due to baryonic feedback, nonlinear structure growth and the fact that galaxies are biased tracers poses a significant obstacle to fully leverage the cons…
View article: <i>Euclid</i>: Forecast constraints on the cosmic distance duality relation with complementary external probes
<i>Euclid</i>: Forecast constraints on the cosmic distance duality relation with complementary external probes Open
Context. In metric theories of gravity with photon number conservation, the luminosity and angular diameter distances are related via the Etherington relation, also known as the distance duality relation (DDR). A violation of this relation…
View article: Calibration of ground based survey data using Gaia: Application to DES
Calibration of ground based survey data using Gaia: Application to DES Open
The calibration of ground based optical imaging data to photometric accuracy of 10 mmag over the full survey area and to color uniformity better than 5 mmag on the scale of the VIS focal plane is a key science requirement for the Euclid mi…
View article: The Astrometric Calibration Software System for Euclid's External Surveys
The Astrometric Calibration Software System for Euclid's External Surveys Open
ESA's Euclid mission will construct a 3D map of the distribution of over a billion galaxies. Multi-band ground-based imaging data will complement the satellite data as it is essential for measuring highly accurate colors required to obtain…
View article: Euclid Detections and Science Challenge 3
Euclid Detections and Science Challenge 3 Open
The Euclid satellite is an ESA mission scheduled for launch in 2020. Its Wide Survey will cover an area of 15,000 deg2 with the two instruments, the Visible Imaging Channel (VIS) and the Near IR Spectrometer and imaging Photometer (NISP). …