Conveners
Wednesday P1
- Colin Hill (Columbia University)
Wednesday P1
- Daisuke Nagai (Yale University)
Wednesday P1
- Daisuke Nagai (Yale University)
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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...
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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...
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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...
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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 $\textit{Planck}$, which is sourced by thermal...
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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...
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Alejandro Jimenez28/06/2023, 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...
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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...
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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...
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Aishwarya Paliwal28/06/2023, 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...
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