ASTRO-H White Paper - Clusters of Galaxies and Related Science

T. Kitayama (Toho University); M. Bautz (MIT); M. Markevitch; (NASA/GSFC); K. Matsushita (Tokyo University of Science); S. Allen (Stanford; University); M. Kawaharada (JAXA); B. McNamara (University of Waterloo); N.; Ota (Nara Women's University); H. Akamatsu (SRON); J. de Plaa (SRON); M.; Galeazzi (University of Miami); G. Madejski (Stanford University); R. Main; (University of Waterloo); E. Miller (MIT); K. Nakazawa (University of Tokyo),; H. Russell (University of Waterloo); K. Sato (Tokyo University of Science),; N. Sekiya (JAXA/University of Tokyo); A. Simionescu (JAXA); T. Tamura (JAXA),; Y. Uchida (JAXA/University of Tokyo); E. Ursino (University of Miami); N.; Werner (Stanford University); I. Zhuravleva (Stanford University); and J.; ZuHone (NASA/GSFC) (on behalf of the ASTRO-H Science Working Group)

arXiv:1412.1176·astro-ph.HE·August 14, 2019·23 cites

ASTRO-H White Paper - Clusters of Galaxies and Related Science

T. Kitayama (Toho University), M. Bautz (MIT), M. Markevitch, (NASA/GSFC), K. Matsushita (Tokyo University of Science), S. Allen (Stanford, University), M. Kawaharada (JAXA), B. McNamara (University of Waterloo), N., Ota (Nara Women's University), H. Akamatsu (SRON)

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TL;DR

The ASTRO-H observatory will revolutionize galaxy cluster studies by enabling precise measurements of intracluster plasma velocities, high-energy spectral analysis, and insights into cosmology, AGN feedback, mergers, and dark matter.

Contribution

This white paper outlines the advanced spectral capabilities of ASTRO-H for studying galaxy cluster gas dynamics and related high-energy astrophysical phenomena.

Findings

01

First spectral resolution to measure plasma velocities in clusters

02

Extended spectral coverage beyond 10 keV for high-energy processes

03

Enhanced understanding of cluster mergers, feedback, and dark matter

Abstract

The next generation X-ray observatory ASTRO-H will open up a new dimension in the study of galaxy clusters by achieving for the first time the spectral resolution required to measure velocities of the intracluster plasma, and extending at the same time the spectral coverage to energies well beyond 10 keV. This white paper provides an overview of the capabilities of ASTRO-H for exploring gas motions in galaxy clusters including their cosmological implications, the physics of AGN feedback, dynamics of cluster mergers as well as associated high-energy processes, chemical enrichment of the intracluster medium, and the nature of missing baryons and unidentified dark matter.

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Taxonomy

TopicsGalaxies: Formation, Evolution, Phenomena · Astrophysical Phenomena and Observations · Astrophysics and Cosmic Phenomena