OLIMPO: A balloon-borne SZE imager to probe ICM dynamics and the WHIM

Sayers J.; Avestruz C.; Thakur R. Basu; Battistelli E.; Bulbul E.; Cacciotti F.; Columbro F.; Coppolecchia A.; Cray S.; D’Alessandro G.; de Bernardis P.; De Petris M.; Hanany S.; Lamagna L.; Lau E.; Masi S.; Paiella A.; Pettinari G.; Piacentini F.; Rapaport E.; Rudnick L.; Zhuravleva I.; ZuHone J.

doi:10.1051/epjconf/202429300049

EPJ Web of Conferences (Jan 2024)

OLIMPO: A balloon-borne SZE imager to probe ICM dynamics and the WHIM

Sayers J.,
Avestruz C.,
Thakur R. Basu,
Battistelli E.,
Bulbul E.,
Cacciotti F.,
Columbro F.,
Coppolecchia A.,
Cray S.,
D’Alessandro G.,
de Bernardis P.,
De Petris M.,
Hanany S.,
Lamagna L.,
Lau E.,
Masi S.,
Paiella A.,
Pettinari G.,
Piacentini F.,
Rapaport E.,
Rudnick L.,
Zhuravleva I.,
ZuHone J.

Affiliations

Sayers J.: Caltech
Avestruz C.: University of Michigan
Thakur R. Basu: NASA Jet Propulsion Laboratory
Battistelli E.: Physics Department, Sapienza University of Rome
Bulbul E.: Max-Planck-Institut für extraterrestrische Physik
Cacciotti F.: Physics Department, Sapienza University of Rome
Columbro F.: Physics Department, Sapienza University of Rome
Coppolecchia A.: Physics Department, Sapienza University of Rome
Cray S.: University of Minnesota
D’Alessandro G.: Physics Department, Sapienza University of Rome
de Bernardis P.: Physics Department, Sapienza University of Rome
De Petris M.: Physics Department, Sapienza University of Rome
Hanany S.: University of Minnesota
Lamagna L.: Physics Department, Sapienza University of Rome
Lau E.: Center for Astrophysics | Harvard & Smithsonian
Masi S.: Physics Department, Sapienza University of Rome
Paiella A.: Physics Department, Sapienza University of Rome
Pettinari G.: Instituto di Fotonica e Nanotecnologie (IFN) - Consiglio Nazionale delle Ricerche (CNR)
Piacentini F.: Physics Department, Sapienza University of Rome
Rapaport E.: Caltech
Rudnick L.: University of Minnesota
Zhuravleva I.: The University of Chicago
ZuHone J.: Center for Astrophysics | Harvard & Smithsonian

DOI: https://doi.org/10.1051/epjconf/202429300049
Journal volume & issue: Vol. 293
p. 00049

Abstract

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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.

Published in EPJ Web of Conferences

ISSN: 2100-014X (Online)
Publisher: EDP Sciences
Country of publisher: France
LCC subjects: Science: Physics
Website: http://www.epj-conferences.org/

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