56 citations · 139 across the 13 of their papers we have counts for
14 papers
JESSNet: Joint dEconvolution and Sparse Separation Network for HI 21 cm foreground cleaning
Athanasia Gkogkou, Victor Bonjean, Jean-Luc Starck +3
Foreground cleaning is a major challenge for H\,{\sc i} 21 cm intensity mapping, particularly in the presence of a chromatic instrumental beam that couples angular foreground struc…
Non-linear halo bias for accurate modelling of cosmic infrared background anisotropies
Baptiste Jego, Matthieu Béthermin, Katarina Kraljic +3
Halo models provide the standard framework for interpreting cosmic infrared background (CIB) anisotropies and inferring the connection between dusty star-forming galaxies and their…
Methodological Frontiers in 21-cm Intensity Mapping: the Treatment of Systematics and Foreground Contamination
Marta Spinelli, Matilde Barberi-Squarotti, José Luis Bernal +29
The distribution of neutral hydrogen (HI) in the post-reionization universe traces the cosmic large-scale structure and therefore serves as a powerful cosmological probe. An effici…
LCS: A Learnlet-Based Sparse Framework for Blind Source Separation
V. Bonjean, A. Gkogkou, J. L. Starck +1
Blind source separation (BSS) plays a pivotal role in modern astrophysics by enabling the extraction of scientifically meaningful signals from multi-frequency observations. Traditi…
Foreground removal in HI 21 cm intensity mapping under frequency-dependent beam distortions
Athanasia Gkogkou, Victor Bonjean, Jean-Luc Starck +2
Neutral hydrogen (HI) intensity mapping with single-dish experiments is a powerful approach for probing cosmology in the post-reionization epoch. However, the presence of bright fo…
Challenges of standard halo models in constraining galaxy properties from CIB anisotropies
Athanasia Gkogkou, Guilaine Lagache, Matthieu Béthermin +1
The halo model, combined with halo occupation distribution (HOD) prescriptions, is widely used to interpret cosmic infrared background (CIB) anisotropies and connect star-forming g…
ACOSMOS and AGOODSS: Continuum Source Catalogues and Multi-band Number Counts
Sylvia Adscheid, Benjamin Magnelli, Daizhong Liu +7
Galaxy submillimetre number counts are a fundamental measurement in our understanding of galaxy evolution models. Most early measurements are obtained via single-dish telescopes wi…
A plausible link between dynamically unsettled molecular gas and the radio jet in NGC 6328
Michalis Papachristou, Kalliopi Maria Dasyra, Juan Antonio Fernández-Ontiveros +5
We report the detection of outflowing molecular gas at the center of the nearby radio galaxy NGC6328 (z=0.014), which has a gigahertz-peaked spectrum radio core and a compact (2 pc…
CONCERTO: Extracting the power spectrum of the [C II ] emission line
M. Van Cuyck, N. Ponthieu, G. Lagache +21
CONCERTO is the first experiment to perform a [CII] line intensity mapping survey to target . Measuring the [CII] power spectrum allows us to study the role of dusty star-fo…
NIKA2 Cosmological Legacy Survey: Survey Description and Galaxy Number Counts
L. Bing, M. Béthermin, G. Lagache +48
Aims. Deep millimeter surveys are necessary to probe the dust-obscured galaxies at high redshift. We conducted a large observing program at 1.2 and 2 mm with the NIKA2 camera insta…
Separation of dust emission from the Cosmic Infrared Background in Herschel observations with Wavelet Phase Harmonics
Constant Auclair, Erwan Allys, François Boulanger +7
The low brightness dust emission at high Galactic latitude is of interest to study the interplay between physical processes in shaping the structure of the interstellar medium (ISM…
Extragalactic CO emission lines in the CMB experiments: a forgotten signal and a foreground
Abhishek S. Maniyar, Athanasia Gkogkou, William R. Coulton +3
High resolution cosmic microwave background (CMB) experiments have allowed us to precisely measure the CMB temperature power spectrum down to very small scales (multipole $\ell \si…
CONCERTO: Simulating the CO, [CII], and [CI] line emission of galaxies in a 117 field and the impact of field-to-field variance
A. Gkogkou, M. Béthermin, G. Lagache +29
In the submm regime, spectral line scans and line intensity mapping (LIM) are new promising probes for the cold gas content and star formation rate of galaxies across cosmic time.…
CONCERTO: High-fidelity simulation of millimeter line emissions of galaxies and [CII] intensity mapping
M. Bethermin, A. Gkogkou, M. Van Cuyck +27
The intensity mapping of the [CII] 158um line redshifted to the sub-mm window is a promising probe of the z>4 star formation and its spatial distribution into the large-scale struc…