Academia Sinica Institute of Astronomy & Astrophysics
中央研究院天文及天文物理研究所
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Thumbnails showing the Chandra X-ray brightness distribution in the 0.5 - 7.0 keV band for 28 systems selected from the HIFLUGS sample. The color bar indicates the X-ray surface brightness in units of photon counts s^-1 arcsec^-2 cm^-2. The black and cyan crosses in each panel show the positions of the X-ray brightness peak and the BCG, respectively. The white horizontal bar in each panel corresponds to a spatial scale of 60''.
Systematic Perturbations of the Thermodynamic Properties in Cool Cores of HIFLUGCS Galaxy Clusters
Top: X-ray surface brightness of the galaxy cluster MACS J1311.0-0310 taken by the Chandra X-ray Observatory (left) and its X-ray residual image after removing the mean profile (right). Bottom: X-ray surface brightness of a simulated galaxy cluster produced by our hydrodynamic simulation (left) and its X-ray residual image (right).
Gas Density Perturbations in the Cool Cores of CLASH Galaxy Clusters
Left: X-ray surface brightness of the galaxy cluster Abell 907 taken by the Chandra X-ray Observatory. Right: Residual image of X-ray surface brightness after subtracting its global profile from the original image.
Line-of-Sight Gas Sloshing in the Cool Core of Abell 907
Top Left: X-ray surface brightness of the galaxy cluster RX J1347.5-1145 taken by the Chandra X-ray Observatory. The white contours show the surface mass density map of this galaxy cluster measured by the strong-lensing analysis using Hubble Space Telescope (HST). Top Right: Same as top left but for the image of the Sunyaev-Zel'dovich effect observed by ALMA. Bottom Left: Same as top left but for the X-ray residual image after removing the global profile of this galaxy cluster from top left. Bottom Right: Same as top right, but for the residual image of the Sunyaev-Zel'dovich effect.
A Cool Core Disturbed: Observational Evidence for the Coexistence of Subsonic Sloshing Gas and Stripped Shock-heated Gas around the Core of RX J1347.5-1145
Left: Bulk velocity (v_bulk) map of the intracluster medium in the core of the X-ray brightest galaxy cluster, the Perseus cluster, with respect to the redshift z = 0.017284 (heliocentric correction applied) in units of km/s. Right: Line-of-sight velocity dispersion (σ_v) of the intracluster medium in units of km/s. The Chandra X-ray contours are overlaid.
Atmospheric gas dynamics in the Perseus cluster observed with Hitomi
Ueda, Shutaro
NSTC Research Scholar
photo of Ueda, Shutaro
Office: ASMAB 1413
TEL: +886-2-2366-5471
FAX: +886-2-2367-7849
Email: sueda_replace2@_asiaa.sinica.edu.tw

Education and Positions

  • Research Scholar (2022~present)
  • NTHU Postdoctoral Fellow (2022)
  • ASIAA Postdoctoral Fellow (2018~2022)
  • JAXA Aerospace Project Research Associates (2015~2018)
  • Osaka University Postdoctoral Fellow (2014~2015)
  • Ph.D. Physics, Osaka University, Japan (2014)

Research Interests

Structure formation, Galaxy clusters, Intracluster medium, X-ray observations, The Sunyaev-Zel'dovich effect

Journal Papers affiliated with ASIAA

  1. Chen W-A; Li C-J; Chu Y-H; Ueda S; Wang K-S; Liu S-Y; Chen B-A, "New Insights on 30 Dor B Revealed by High-quality Multiwavelength Observations" , AJ: 166(5), id. 204 (12pp), Nov, 2023 [SCI] ( ADS | Fulltext )
  2. Kitayama T; Ueda S; Okabe N; Akahori T; Hilton M; Hughes JP; Ichinohe Y; Kohno K; Komatsu E; Lin Y-T; Miyatake H; Oguri M; Sifón C; Takakuwa S; Takizawa M; Tsutsumi T; Van Marrewijk J; Wollack EJ, "Galaxy clusters at z 1 imaged by ALMA with the Sunyaev-Zel'dovich effect" , PASJ: 75(2), 311-337, April, 2023 [SCI] ( ADS | Fulltext )
  3. Umetsu K; Ueda S; Hsieh B-C; Nonino M; Chiu IN; Oguri M; Molnar SM; Koekemoer AM; Tam S-I, "Line-of-sight Elongation and Hydrostatic Mass Bias of the Frontier Fields Galaxy Cluster Abell 370" , ApJ: 934(2), id.169, Aug, 2022 [SCI] ( ADS | Fulltext )
  4. Ueda S; Umetsu K; Ng F; Ichinohe Y; Kitayama T; Molnar SM, "Systematic Perturbations of the Thermodynamic Properties in Cool Cores of HIFLUGCS Galaxy Clusters" , ApJ: 922(1), id.81 (17pp), Nov, 2021 [SCI] ( ADS | Fulltext )
  5. Akahori T; Kitayama T; Ueda S; et al., "Discovery of radio jets in the Phoenix galaxy cluster center" , PASJ: 72(4), id.62 (10pp.), Aug, 2020 [SCI] ( ADS | Fulltext )
  6. Kitayama T; Ueda S; Akahori T; ...; Takakuwa S; et al., "Deeply cooled core of the Phoenix galaxy cluster imaged by ALMA with the Sunyaev─Zel'dovich effect" , PASJ: 72(2), id.33 (18 pp.), Apr, 2020 [SCI] ( ADS | Fulltext )
  7. Molnar SM; Ueda S; Umetsu K; et al., "The Dynamical State of the Frontier Fields Galaxy Cluster Abell 370" , ApJ: 900(2), id.151 (10pp.), Sep, 2020 [SCI] ( ADS | Fulltext )
  8. Ota N; Mitsuishi I; Babazaki Y; ...; Ueda S; et al., "X-ray properties of high-richness CAMIRA clusters in the Hyper Suprime-Cam Subaru Strategic Program field" , PASJ: 72(1), id.1 (12 pp.), Feb, 2020 [SCI] ( ADS | Fulltext )
  9. Tanaka K; Tsuji A; Akamatsu H; ...; Ueda S; et al., "X-ray study of the double source plane gravitational lens system Eye of Horus observed with XMM-Newton" , MNRAS: 491(3), 3411-3418, Jan, 2020 [SCI] ( ADS | Fulltext )
  10. Ueda S; Ichinohe Y; Molnar SM; Umetsu K; et al., "Gas Density Perturbations in the Cool Cores of CLASH Galaxy Clusters" , ApJ: 892(2), id.100 (20pp.), Apr, 2020 [SCI] ( ADS | Fulltext )
  11. Okabe N; Oguri M; Akamatsu H; ...; Ueda S; et al., "Halo concentration, galaxy red fraction, and gas properties of optically defined merging clusters †" , PASJ: 71(4), id.79 (23 pp.), Aug, 2019 [SCI] ( ADS | Fulltext )
  12. Simionescu A; Nakashima S; Yamaguchi H; ...; Ueda S; et al., "Constraints on the Chemical Enrichment History of the Perseus Cluster of Galaxies from High-Resolution X-ray Spectroscopy" , MNRAS: 483(2), 1701-1721, Feb, 2019 [SCI] ( ADS | Fulltext )
  13. Ueda S; Ichinohe Y; Kitayama T; Umetsu K, "Line-of-Sight Gas Sloshing in the Cool Core of Abell 907" , ApJ: 871(2), id. 207 (6 pp.), Feb, 2019 [SCI] ( ADS | Fulltext )
  14. Ueda S; Kitayama T; Oguri M; ...; Takakuwa S; et al., "A Cool Core Disturbed: Observational Evidence for the Coexistence of Subsonic Sloshing Gas and Stripped Shock-heated Gas around the Core of RX J1347.5─1145" , ApJ: 866(1), id. 48 (13 pp.), Oct, 2018 [SCI] ( ADS | Fulltext )
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