M. Kunz
YOU?
Author Swipe
View article: Euclid preparation. Non-Gaussianity of 2-point statistics likelihood: Precise analysis of the matter power spectrum distribution
Euclid preparation. Non-Gaussianity of 2-point statistics likelihood: Precise analysis of the matter power spectrum distribution Open
We investigate the non-Gaussian features in the distribution of the matter power spectrum multipoles. Using the COVMOS method, we generate 100\,000 mock realisations of dark matter density fields in both real and redshift space across mult…
View article: KGB-evolution: a relativistic $N$-body code for kinetic gravity braiding models
KGB-evolution: a relativistic $N$-body code for kinetic gravity braiding models Open
We present KGB-evolution, a relativistic $N$-body simulation code that extends the $k$-evolution code by incorporating an effective field theory parameterization of kinetic gravity braiding, while also including the $k$-essence model as a …
View article: Euclid Quick Data Release (Q1): Hunting for luminous z > 6 galaxies in the Euclid Deep Fields -- forecasts and first bright detections
Euclid Quick Data Release (Q1): Hunting for luminous z > 6 galaxies in the Euclid Deep Fields -- forecasts and first bright detections Open
The evolution of the rest-frame ultraviolet luminosity function (UV LF) is a powerful probe of early star formation and stellar mass build-up. At z > 6, its bright end (MUV < -21) remains poorly constrained due to the small volumes of exis…
View article: Euclid Quick Data Release (Q1). Searching for giant gravitational arcs in galaxy clusters with mask region-based convolutional neural networks
Euclid Quick Data Release (Q1). Searching for giant gravitational arcs in galaxy clusters with mask region-based convolutional neural networks Open
Strong gravitational lensing (SL) by galaxy clusters is a powerful probe of their inner mass distribution and a key test bed for cosmological models. However, the detection of SL events in wide-field surveys such as Euclid requires robust,…
View article: Euclid Quick Data Release (Q1). Quenching precedes bulge formation in dense environments but follows it in the field
Euclid Quick Data Release (Q1). Quenching precedes bulge formation in dense environments but follows it in the field Open
(Abridged) The bimodality between star-forming discs and quiescent spheroids requires the existence of two main processes: the galaxy quenching and the morphological transformation. In this paper, we aim to understand the link between thes…
View article: Euclid Quick Data Release (Q1). Spectroscopic unveiling of highly ionised lines at z = 2.48-3.88
Euclid Quick Data Release (Q1). Spectroscopic unveiling of highly ionised lines at z = 2.48-3.88 Open
This study explores a rare population of sources in a currently uncharted region of spectroscopic redshift space in the Euclid Quick Data Release (Q1), and is intended potentially to support upcoming spectroscopic studies. Our goal is to i…
View article: Euclid preparation: The flat-sky approximation for the clustering of Euclid's photometric galaxies
Euclid preparation: The flat-sky approximation for the clustering of Euclid's photometric galaxies Open
We compare the performance of the flat-sky approximation and Limber approximation for the clustering analysis of the photometric galaxy catalogue of Euclid. We study a 6 bin configuration representing the first data release (DR1) and a 13 …
View article: Euclid preparation. LXXVII. The NISP spectroscopy channel: Ground performance and calibration
Euclid preparation. LXXVII. The NISP spectroscopy channel: Ground performance and calibration Open
ESA's Euclid cosmology mission relies on the very sensitive and accurately calibrated spectroscopy channel of the Near-Infrared Spectrometer and Photometer (NISP). With three operational grisms in two wavelength intervals, NISP provides di…
View article: Euclid preparation: Towards a DR1 application of higher-order weak lensing statistics
Euclid preparation: Towards a DR1 application of higher-order weak lensing statistics Open
This is the second paper in the HOWLS (higher-order weak lensing statistics) series exploring the usage of non-Gaussian statistics for cosmology inference within \textit{Euclid}. With respect to our first paper, we develop a full tomograph…
View article: <i>Euclid</i> preparation
<i>Euclid</i> preparation Open
The Euclid Space Telescope will image about 14 000 deg 2 of the extragalactic sky at visible and near-infrared wavelengths, providing a dataset of unprecedented size and richness that will facilitate a multitude of studies into the evoluti…
View article: Euclid preparation. Methodology for validating the Euclid Catalogue of Galaxy Clusters using external data
Euclid preparation. Methodology for validating the Euclid Catalogue of Galaxy Clusters using external data Open
We present our methodology for identifying known clusters as counterparts to objects in the Euclid Catalogue of Galaxy Clusters (ECGC). Euclid is expected to detect a large number of optically-selected galaxy clusters over the approximatel…
View article: <i>Euclid</i>: Photometric redshift calibration performance with the clustering-redshifts technique in the Flagship 2 simulation
<i>Euclid</i>: Photometric redshift calibration performance with the clustering-redshifts technique in the Flagship 2 simulation Open
Aims. The precision of cosmological constraints from imaging surveys hinges on an accurately estimated redshift distribution n ( z ) of the tomographic bins, especially their mean redshifts. We assess the effectiveness of the clustering-re…
View article: Anchors no more: using peculiar velocities to constrain <i>H</i> <sub>0</sub> and the primordial Universe without calibrators
Anchors no more: using peculiar velocities to constrain <i>H</i> <sub>0</sub> and the primordial Universe without calibrators Open
We develop a novel approach to constrain the Hubble parameter H 0 and the primordial power spectrum amplitude A s using type Ia supernovae (SNIa) data. By considering SNIa as tracers of the peculiar velocity field, we can model their dista…
View article: TABASCAL: Removing multi-satellite interference from radio interferometry observations
TABASCAL: Removing multi-satellite interference from radio interferometry observations Open
In the first trajectory-based radio frequency interference (RFI) subtraction and calibration (TABASCAL) paper, we showed how to calibrate radio interferometers in the presence of RFI sources by simultaneously isolating the trajectories and…
View article: Euclid preparation. Simulating thousands of Euclid spectroscopic skies
Euclid preparation. Simulating thousands of Euclid spectroscopic skies Open
We present two extensive sets of 3500+1000 simulations of dark matter haloes on the past light cone, and two corresponding sets of simulated (`mock') galaxy catalogues that represent the Euclid spectroscopic sample. The simulations were pr…
View article: Euclid: Early Release Observations. A combined strong and weak lensing solution for Abell 2390 beyond its virial radius
Euclid: Early Release Observations. A combined strong and weak lensing solution for Abell 2390 beyond its virial radius Open
Euclid is presently mapping the distribution of matter in the Universe in detail via the weak lensing (WL) signature of billions of distant galaxies. The WL signal is most prominent around galaxy clusters, and can extend up to distances we…
View article: <i>Euclid</i>: Early Release Observations of ram-pressure stripping in the Perseus cluster
<i>Euclid</i>: Early Release Observations of ram-pressure stripping in the Perseus cluster Open
Euclid is delivering optical and near-infrared imaging data over 14 000 deg 2 on the sky at spatial resolution and surface brightness levels that can be used to understand the morphological transformation of galaxies within groups and clus…
View article: <i>Euclid</i>: Early Release Observations of diffuse stellar structures and globular clusters as probes of the mass assembly of galaxies in the Dorado group
<i>Euclid</i>: Early Release Observations of diffuse stellar structures and globular clusters as probes of the mass assembly of galaxies in the Dorado group Open
Deep surveys have helped to unveil the history of past and present galaxy mergers, and, in particular, uncovering their tidal debris and co-located globular clusters (GCs). Euclid ’s unique combination of capabilities (spatial resolution, …
View article: Euclid preparation. Full-shape modelling of 2-point and 3-point correlation functions in real space
Euclid preparation. Full-shape modelling of 2-point and 3-point correlation functions in real space Open
We investigate the accuracy and range of validity of the perturbative model for the 2-point (2PCF) and 3-point (3PCF) correlation functions in real space in view of the forthcoming analysis of the Euclid mission spectroscopic sample. We ta…
View article: Euclid preparation. Constraining parameterised models of modifications of gravity with the spectroscopic and photometric primary probes
Euclid preparation. Constraining parameterised models of modifications of gravity with the spectroscopic and photometric primary probes Open
The Euclid mission has the potential to understand the fundamental physical nature of late-time cosmic acceleration and, as such, of deviations from the standard cosmological model, LCDM. In this paper, we focus on model-independent method…
View article: <i>Euclid</i> preparation
<i>Euclid</i> preparation Open
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. In the …
View article: The low multipoles in the Pantheon+SH0ES data
The low multipoles in the Pantheon+SH0ES data Open
In previous work we have shown that the dipole in the low redshift supernovae of the Pantheon+SH0ES data does not agree with the one inferred from the velocity of the solar system as obtained from CMB data. We interpreted this as the prese…
View article: Euclid Quick Data Release (Q1): A photometric search for ultracool dwarfs in the Euclid Deep Fields
Euclid Quick Data Release (Q1): A photometric search for ultracool dwarfs in the Euclid Deep Fields Open
We present a catalogue of more than 5000 new ultracool dwarf (UCD) candidates in the three Euclid Deep Fields in the Q1 data release. They range from late M to late T dwarfs, and include 1200 L and T dwarfs. More than 100 of them have been…
View article: Euclid Quick Data Release (Q1) Ultracool dwarfs in the Euclid Deep Field North
Euclid Quick Data Release (Q1) Ultracool dwarfs in the Euclid Deep Field North Open
Ultracool dwarfs (UCDs) encompass the lowest mass stars and brown dwarfs, defining the stellar substellar boundary. They have significant potential for advancing the understanding of substellar physics; however, these objects are challengi…
View article: Euclid: Quick Data Release (Q1) -- Photometric studies of known transients
Euclid: Quick Data Release (Q1) -- Photometric studies of known transients Open
We report on serendipitous Euclid observations of previously known transients, using the Euclid Q1 data release. By cross-matching with the Transient Name Server (TNS) we identify 164 transients that coincide with the data release. Althoug…
View article: <i>Euclid</i> preparation
<i>Euclid</i> preparation Open
The Cosmic Dawn Survey (DAWN survey) provides multiwavelength (UV/optical to mid-IR) data across the combined 59 deg 2 of the Euclid Deep and Auxiliary fields (EDFs and EAFs). In this work, the first public data release from the DAWN surve…
View article: <i>Euclid</i> preparation
<i>Euclid</i> preparation Open
In this paper we present the framework for measuring angular power spectra in the Euclid mission. The observables in galaxy surveys, such as galaxy clustering and cosmic shear, are not continuous fields, but discrete sets of data, obtained…
View article: TABASCAL II: Removing Multi-Satellite Interference from Point-Source Radio Astronomy Observations
TABASCAL II: Removing Multi-Satellite Interference from Point-Source Radio Astronomy Observations Open
In the first TABASCAL paper we showed how to calibrate in the presence of Radio Frequency Interference (RFI) sources by simultaneously isolating the trajectories and signals of the RFI sources. Here we show that we can accurately remove RF…
View article: <i>Euclid</i> preparation
<i>Euclid</i> preparation Open
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…
View article: Euclid preparation. 3-dimensional galaxy clustering in configuration space. Part I. 2-point correlation function estimation
Euclid preparation. 3-dimensional galaxy clustering in configuration space. Part I. 2-point correlation function estimation Open
The 2-point correlation function of the galaxy spatial distribution is a major cosmological observable that enables constraints on the dynamics and geometry of the Universe. The Euclid mission aims at performing an extensive spectroscopic …