Observing the Universe at millimetre wavelengths

Session

Wednesday P1

28 juin 2023, 13:50

LPSC Grenoble

Présidents de session

Wednesday P1

• Colin Hill (Columbia University)

Wednesday P1

• Daisuke Nagai (Yale University)

Wednesday P1

• Daisuke Nagai (Yale University)

99. Towards Cosmology with the Kinematic SZ Projected-Fields Estimator

Raagini Patki (Cornell University)

28/06/2023 13:50

Over the past decade, the kinetic SZ effect has emerged as a probe of the distribution of baryons and the large-scale velocity field in the late Universe. Of the several ways to detect it, the so-called Projected-Fields kSZ estimator has the promising characteristic of not being limited to spectroscopic samples of galaxies. The original theoretical formulation of this estimator included...

27. Enhancing Kinematic Sunyaev-Zel'dovich Power Spectrum Measurements by Removing CIB Contamination Using unWISE Galaxies

Kristen Surrao (Columbia University)

28/06/2023 14:20

Extracting the kinematic Sunyaev-Zel'dovich (kSZ) effect—the Compton scattering of CMB photons off moving electrons—requires cleaning of other sky components. In this work, we use large-scale structure (LSS) tracers that are correlated with both the cosmic infrared background (CIB) and thermal Sunyaev-Zel'dovich (tSZ) signal, but whose two-point correlations with the kSZ signal vanish on small...

70. Cosmological parameters with CMB primary anisotropies observed by the SPT-3G instrument

Etienne Camphuis (Institut d'Astrophysique de Paris)

28/06/2023 14:40

The South Pole Telescope (SPT) is observing the cosmic microwave background (CMB) anisotropies with arcminute resolution using its state-of-the-art camera (SPT-3G). Upcoming constraints on cosmological constraints from power spectrum analyses with the 2019/2020 data will be at least as tight as Planck’s ones, while remaining independent from the satellite experiment, thus allowing to test the...

87. Constraints on primordial non-Gaussianity from halo bias measured through CMB lensing cross-correlations

Fiona McCarthy (Flatiron Institute)

28/06/2023 15:00

Local primordial non-Gaussianity, parametrized by $f_{NL}^{\mathrm{loc}}$, induces a characteristic scale dependence in the large-scale bias of halos. This scale dependence is a promising path to constrain multi-field inflation theories, which predict non-zero $f_{NL}^{\mathrm{loc}}$. We use the cosmic infrared background (CIB), measured by $\mathit{\text{Planck}}$, which is sourced by thermal...

64. Galaxy catalog from SAGE calibration using the hydrodynamic simulation The300

Jonathan Gómez (Universidad Autónoma de Madrid)

28/06/2023 15:20

The Three Hundreds project consists of a 324 regions sample simulated with full-physics hydrodynamical re-simulations. They have been produced starting from the dark-matter-only MultiDark Simulations [MDPL2 8], which consists in a 1 h${}^{-1}$ Gpc cube containing 3840${}^3$ dark matter (DM) particles with a mass of $1.5\times {10}^9$ h${}^{-1}$ M${}_{\odot }$ each (LR DMONLY). This produces 324...

101. The Clusters Galaxy Density from high resolution dark matter only simulations with realistic SAMs and its application to the Euclid Survey

Alejandro Jimenez

28/06/2023 15:40

The Euclid Satellite Mission expects to unveil the nature of dark energy and dark matter through the measurement of several cosmological probes, among which are the cluster number count. One main limitation for constraining cosmological parameters will be the determination of the Selection Function (SF) which characterizes the probability of detecting a cluster of a given mass and...

50. Impact of filaments on galaxy clusters properties in The Three Hundred simulation

Sara Santoni (Sapienza University of Rome)

28/06/2023 16:30

Filaments connecting galaxy clusters in the Cosmic Web are thought to quantify, or to simply have an impact on several intrinsic and observational properties of the halos. From the gas filamentary structure of the 324 simulated regions of The Three Hundred project extracted with the DisPerSE filament finder at z=0, we estimate the connectivity, the number of filaments to which clusters are...

89. The Three Hundred project: A Machine Learning method to infer clusters of galaxies mass radial profiles from mock THE THREE HUNDRED Sunyaev-Zel'dovich maps

Antonio Ferragamo (Sapienza Università di Roma)

28/06/2023 16:50

We develop a machine learning algorithm that infers the radial profiles of total and gas mass of galaxy clusters given thermal Sunyaev-Zeldovich (SZ) effect maps. The architecture is composed of a combination of an autoencoder and a random forest. The first is used to extract the information from the maps, while the second performs the final estimation of the radial mass profiles. This ML...

96. 3D scaling laws and projection effects in The300-NIKA2 Sunyaev-Zeldovich Large Program Twin Samples

Aishwarya Paliwal

28/06/2023 17:10

The abundance of galaxy clusters with mass and redshift is a well-known cosmological probe. The cluster mass is a key parameter for studies that aim to constrain cosmological parameters using galaxy clusters, making it critical to understand and properly account for the errors in galaxy cluster mass estimates. Subsequently, it becomes important to correctly calibrate scaling relations between...