activity
20222026
most citedXMM-Newton view of the shock heating in an early merging cluster, CIZA J1358.94750

8 citations · 22 across the 13 of their papers we have counts for

collaborators
Showing astro-ph.HEShow all

8 papers · 1 filter

astro-ph.HE2026

Exploring the dynamics of the Coma galaxy cluster by mapping its X-ray emission line profiles with XRISM

Kosei Sakai, Kazuhiro Nakazawa, Maxim Markevitch +17

The intracluster medium (ICM) in merging galaxy clusters exhibits turbulence and bulk flows. Unraveling these components is crucial not only for elucidating the geometry of the clu…

astro-ph.HE2026

A Kinematic Measurement of the Effective Viscosity of the Intracluster Medium: The Cold Front of A3667 Seen by XRISM

Yutaka Fujita, Yuki Omiya

Constraints on the effective viscosity of the intracluster medium (ICM) come almost exclusively from imaging: the power spectrum of X-ray surface brightness fluctuations, and the m…

astro-ph.HE2026

Unravelling Turbulence and Magnetic Fields in Galaxy Clusters with SKA and XRISM

Kohei Kurahara, Takuya Akahori, Amit Seta +5

This chapter proposes a research framework to quantitatively investigate non-thermal components in the Intracluster Medium (ICM) of galaxy clusters, which are critical ingredients…

astro-ph.HE2025

Origin and Evolution of the Structure in the Head-Tail Radio Galaxy of Abell 3322

Kohei Kurahara, Takuya Akahori, Takumi Ohmura +8

A head-tail galaxy is thought to be a radio galaxy with bent active galactic nuclei (AGN) jets interacting with the intracluster medium (ICM). Study of head-tail galaxies provides…

astro-ph.HE2025

XRISM/Resolve View of Abell 2319: Turbulence, Sloshing, and ICM Dynamics

XRISM Collaboration, Marc Audard, Hisamitsu Awaki +132

We present results from XRISM/Resolve observations of the core of the galaxy cluster Abell 2319, focusing on its kinematic properties. The intracluster medium (ICM) exhibits temper…

astro-ph.HE2024★ 7 cited

Indications of an offset merger in Abell 3667

Y. Omiya, K. Nakazawa, T. Tamura +13

Abell 3667 is a nearby merging cluster with a prominent cold front and a pair of two bright radio relics. Assuming a head-on merger, the origin of the cold front is often considere…

astro-ph.HE2023

Discovery of Diffuse Radio Source in Abell 1060

Kohei Kurahara, Takuya Akahori, Aika Oki +2

Non-thermal components in the intra-cluster medium (ICM) such as turbulence, magnetic field, and cosmic rays imprint the past and current energetic activities of jets from active g…

astro-ph.HE2022★ 7 cited

Diffuse radio source candidate in CIZA J1358.9-4750

Kohei Kurahara, Takuya Akahori, Ruta Kale +11

We report on results of our upgraded Giant Metrewave Radio Telescope (uGMRT) observations for an early-stage merging galaxy cluster, CIZA J1358.9-4750 (CIZA1359), in Band-3 (300--5…