OLIMPO: a Balloon-Borne SZE Imager to Probe ICM Dynamics and the WHIM
Abstract
OLIMPO is a proposed Antarctic balloon-borne Sunyaev-Zel'dovich effect (SZE) imager to study gas dynamics associated with structure formation along with the properties of the warm-hot intergalactic medium (WHIM) residing in the connective filaments. During a 25 day flight OLIMPO will image a total of 10 z~0.05 galaxy clusters and 8 bridges at 145, 250, 365, and 460 GHz at an angular resolution of 1.0'-3.3'. The maps will be significantly deeper than those planned from CMB-S4 and CCAT-P, and will have excellent fidelity to the large angular scales of our low-z targets, which are difficult to probe from the ground. In combination with X-ray data from eROSITA and XRISM we will transform our current static view of galaxy clusters into a full dynamic picture by measuring the internal intra-cluster medium (ICM) velocity structure with the kinematic SZE, X-ray spectroscopy, and the power spectrum of ICM fluctuations. Radio observations from ASKAP and MeerKAT will be used to better understand the connection between ICM turbulence and shocks with the relativistic plasma. Beyond the cluster boundary, we will combine thermal SZE maps from OLIMPO with X-ray imaging from eROSITA to measure the thermodynamics of the WHIM residing in filaments, providing a better understanding of its properties and its contribution to the total baryon budget.
Keywords
Cite
@article{arxiv.2404.04414,
title = {OLIMPO: a Balloon-Borne SZE Imager to Probe ICM Dynamics and the WHIM},
author = {Jack Sayers and Camille Avestruz and Ritoban Basu Thakur and Elia Stefano Battistelli and Esra Bulbul and Federico Caccioti and Fabio Columbro and Alessandro Coppolecchia and Scott Cray and Giuseppe D'Alessandro and Paolo de Bernardis and Marco de Petris and Shaul Hanany and Luca Lamagna and Erwin Lau and Silvia Masi and Allesandro Paiella and Giorgio Pettinari and Francesco Piacentini and Eitan Rapaport and Larry Rudnick and Irina Zhuravleva and John ZuHuone},
journal= {arXiv preprint arXiv:2404.04414},
year = {2024}
}
Comments
From the proceedings of the mm Universe 2023