activity
20142026
most citedAtmospheric gas dynamics in the Perseus cluster observed with Hitomi

152 citations · 1.6k across the 86 of their papers we have counts for

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Showing astro-ph.GAShow all

9 papers · 1 filter

astro-ph.GA2026

Chemical enrichment of the Perseus cluster core seen by XRISM/Resolve

XRISM Collaboration, Marc Audard, Hisamitsu Awaki +143

The intracluster medium (ICM) is rich in chemical elements, produced by core-collapse (SNcc) and Type Ia supernovae (SNIa) over the last 12 Gyr. Whereas cluster outskirts are…

astro-ph.GA2026

High-resolution X-ray spectroscopy with XRISM/Resolve reveals super-Solar abundance ratios in Virgo/M87

J. Martin, A. Simionescu, F. Mernier +26

The chemical composition of the intracluster medium (ICM) provides key insights into the enrichment history of galaxy clusters. However, high-resolution abundance measurements with…

astro-ph.GA2026★ 3 cited

A Fast, Hot Wind from a Nuclear Starburst

XRISM Collaboration, Marc Audard, Hisamitsu Awaki +137

Galaxies with intense star formation often host multiphase, galaxy-scale winds powered by supernovae and fast stellar winds. These are strong enough to disrupt the star-forming int…

astro-ph.GA2025

A XRISM/Resolve view of the dynamics in the hot gaseous atmosphere of M87

XRISM Collaboration, M. Audard, H. Awaki +138

The XRISM/Resolve microcalorimeter directly measured the gas velocities in the core of the Virgo Cluster, the closest example of AGN feedback in a cluster. This proximity allows us…

astro-ph.GA2025

XRISM-Subaru views of Abell 754: Energetic ICM Motions Revealed by XRISM/Resolve

Yuki Omiya, Nobuhiro Okabe, Kazuhiro Nakazawa +4

We present high-resolution X-ray spectroscopy of the merging cluster Abell~754 using \textit{XRISM}/Resolve. In GO1 phase, \textit{XRISM}/Resolve observed Abell 754 in two deep poi…

astro-ph.GA2025

Comparing XRISM cluster velocity dispersions with predictions from cosmological simulations: are feedback models too ejective?

XRISM Collaboration, Marc Audard, Hisamitsu Awaki +147

The dynamics of the intra-cluster medium (ICM), the hot plasma that fills galaxy clusters, are shaped by gravity-driven cluster mergers and feedback from supermassive black holes (…

astro-ph.GA2025

XRISM Observations of The Prototypical Cold Front in Abell 3667

Yuki Omiya, Yuto Ichinohe, Kazuhiro Nakazawa +13

We present high-resolution X-ray spectroscopy of the merging galaxy cluster Abell 3667 with \textit{XRISM}/Resolve. Two observations, targeting the cluster X-ray core and the proto…

astro-ph.GA2019★ 2 cited

X-ray study of the double source plane gravitational lens system Eye of Horus observed with XMM-Newton

Keigo Tanaka, Ayumi Tsuji, Hiroki Akamatsu +19

A double source plane (DSP) system is a precious probe for the density profile of distant galaxies and cosmological parameters. However, these measurements could be affected by the…

astro-ph.GA2015★ 77 cited

A Uniform Contribution of Core-Collapse and Type Ia Supernovae to the Chemical Enrichment Pattern in the Outskirts of the Virgo Cluster

A. Simionescu, N. Werner, O. Urban +3

We present the first measurements of the abundances of -elements (Mg, Si, and S) extending out to beyond the virial radius of a cluster of galaxies. Our results, based on Suzaku…