SPACE seminar: Filippo Bouchè ; Vincenzo Grieco

Tuesday 31 Mar 2026, 12:00 → 13:00 Europe/Rome

Aula 4 (San Marcellino)

Speaker 1: Filippo Bouchè (SSM)

Title 1: Higher-order statistics in Euclid: towards the analysis of the DR1 weak lensing data

Abstract 1: I will provide an overview of weak lensing higher-order statistics and their relevance to the Euclid mission. The talk will draw on the results of the latest paper from the HOWLS group in Euclid, which employed the Fisher formalism to explore the constraining power of non-Gaussian statistics on cosmological parameters. Emphasis will be placed on the key lessons learned from this preparatory project, highlighting how it informs the development of robust methodologies for the analysis of the Data Release 1. I will conclude by outlining the plans for the Data Release 1, with a particular focus on the strategies for probing modified gravity models.

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Speaker 2: Vincenzo Grieco (SSM)

Title 2: Enhancing Water Cherenkov Detectors Arrays through multi-photomultiplier modules: a study on an innovative photosensor design for the SWGO experiment

Abstract 2: Water Cherenkov Detectors (WCD) are pivotal in various scientific fields, including neutrino physics, gamma-ray astronomy, and cosmic-ray research. The detection sensitivity and precision of these detectors crucially rely on photomultiplier tubes to capture Cherenkov radiation produced by charged particles moving faster than the speed of light in water. In recent years, employing multiPMT modules has emerged as a promising strategy to enhance large volume water and ice Cherenkov detector performance.

I will investigate the usage of multiPMT modules integrated in small WCD units as a possible configuration for the Southern Wide-Field Gamma-Ray Observatory, the next generation WCD array experiment located in the Atacama Desert in Chile and dedicated to high energy gamma-ray surveys of the sky. I will discuss the potential of multiPMTs in capturing the features of the Cherenkov light distribution originated by single muons and outline its possible application for muon tagging and muon counting in gamma-hadron discrimination studies.

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