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


Journal article


Xrism collaboration, M. Audard, H. Awaki, R. Ballhausen, A. Bamba, E. Behar, R. Boissay-Malaquin, L. Brenneman, Gregory V. Brown, Lia Corrales, E. Costantini, R. Cumbee, M. Trigo, C. Done, T. Dotani, K. Ebisawa, M. Eckart, Dominique Eckert, Satoshi Eguchi, T. Enoto, Y. Ezoe, Adam R. Foster, R. Fujimoto, Y. Fujita, Yasushi Fukazawa, Kotaro Fukushima, A. Furuzawa, L. Gallo, J. Garc'ia, Liyi Gu, M. Guainazzi, Kouichi Hagino, Kenji Hamaguchi, I. Hatsukade, Katsuhiro Hayashi, T. Hayashi, N. Hell, E. Hodges-Kluck, A. Hornschemeier, Y. Ichinohe, D. Ishi, Manabu Ishida, K. Ishikawa, Y. Ishisaki, J. Kaastra, T. Kallman, Erin Kara, S. Katsuda, Y. Kanemaru, Rich Kelley, C. Kilbourne, S. Kitamoto, S. Kobayashi, T. Kohmura, A. Kubota, M. Leutenegger, M. Loewenstein, Y. Maeda, M. Markevitch, Hironori Matsumoto, K. Matsushita, D. McCammon, Brian McNamara, F. Mernier, E. Miller, Jon M. Miller, I. Mitsuishi, M. Mizumoto, T. Mizuno, K. Mori, K. Mukai, Hiroshi Murakami, R. Mushotzky, H. Nakajima, K. Nakazawa, J. Ness, K. Nobukawa, M. Nobukawa, Hirofumi Noda, H. Odaka, S. Ogawa, A. Ogorzałek, T. Okajima, Naomi Ota, S. Paltani, R. Petre, P. Plucinsky, F. Porter, K. Pottschmidt, Kosuke Sato, Toshiki Sato, M. Sawada, H. Seta, M. Shidatsu, A. Simionescu, Randall Smith, Hiromasa Suzuki, A. Szymkowiak, H. Takahashi, M. Takeo, T. Tamagawa, Keisuke Tamura, Takaaki Tanaka, A. Tanimoto, M. Tashiro, Y. Terada, Y. Terashima, Y. Tsuboi, M. Tsujimoto, H. Tsunemi, T. Tsuru, Hiroyuki Uchida, N. Uchida, Y. Uchida, H. Uchiyama, Y. Ueda, S. Uno, J. Vink, S. Watanabe, Brian J. Williams, S. Yamada, S. Yamada, Hiroya Yamaguchi, K. Yamaoka, N. Yamasaki, M. Yamauchi, S. Yamauchi, T. Yaqoob, T. Yoneyama, Tessei Yoshida, M. Yukita, I. Zhuravleva, R. Seppi, Itsuki Aihara, Y. Omiya
2025

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APA   Click to copy
collaboration, X., Audard, M., Awaki, H., Ballhausen, R., Bamba, A., Behar, E., … Omiya, Y. (2025). XRISM/Resolve View of Abell 2319: Turbulence, Sloshing, and ICM Dynamics.


Chicago/Turabian   Click to copy
collaboration, Xrism, M. Audard, H. Awaki, R. Ballhausen, A. Bamba, E. Behar, R. Boissay-Malaquin, et al. “XRISM/Resolve View of Abell 2319: Turbulence, Sloshing, and ICM Dynamics” (2025).


MLA   Click to copy
collaboration, Xrism, et al. XRISM/Resolve View of Abell 2319: Turbulence, Sloshing, and ICM Dynamics. 2025.


BibTeX   Click to copy

@article{xrism2025a,
  title = {XRISM/Resolve View of Abell 2319: Turbulence, Sloshing, and ICM Dynamics},
  year = {2025},
  author = {collaboration, Xrism and Audard, M. and Awaki, H. and Ballhausen, R. and Bamba, A. and Behar, E. and Boissay-Malaquin, R. and Brenneman, L. and Brown, Gregory V. and Corrales, Lia and Costantini, E. and Cumbee, R. and Trigo, M. and Done, C. and Dotani, T. and Ebisawa, K. and Eckart, M. and Eckert, Dominique and Eguchi, Satoshi and Enoto, T. and Ezoe, Y. and Foster, Adam R. and Fujimoto, R. and Fujita, Y. and Fukazawa, Yasushi and Fukushima, Kotaro and Furuzawa, A. and Gallo, L. and Garc'ia, J. and Gu, Liyi and Guainazzi, M. and Hagino, Kouichi and Hamaguchi, Kenji and Hatsukade, I. and Hayashi, Katsuhiro and Hayashi, T. and Hell, N. and Hodges-Kluck, E. and Hornschemeier, A. and Ichinohe, Y. and Ishi, D. and Ishida, Manabu and Ishikawa, K. and Ishisaki, Y. and Kaastra, J. and Kallman, T. and Kara, Erin and Katsuda, S. and Kanemaru, Y. and Kelley, Rich and Kilbourne, C. and Kitamoto, S. and Kobayashi, S. and Kohmura, T. and Kubota, A. and Leutenegger, M. and Loewenstein, M. and Maeda, Y. and Markevitch, M. and Matsumoto, Hironori and Matsushita, K. and McCammon, D. and McNamara, Brian and Mernier, F. and Miller, E. and Miller, Jon M. and Mitsuishi, I. and Mizumoto, M. and Mizuno, T. and Mori, K. and Mukai, K. and Murakami, Hiroshi and Mushotzky, R. and Nakajima, H. and Nakazawa, K. and Ness, J. and Nobukawa, K. and Nobukawa, M. and Noda, Hirofumi and Odaka, H. and Ogawa, S. and Ogorzałek, A. and Okajima, T. and Ota, Naomi and Paltani, S. and Petre, R. and Plucinsky, P. and Porter, F. and Pottschmidt, K. and Sato, Kosuke and Sato, Toshiki and Sawada, M. and Seta, H. and Shidatsu, M. and Simionescu, A. and Smith, Randall and Suzuki, Hiromasa and Szymkowiak, A. and Takahashi, H. and Takeo, M. and Tamagawa, T. and Tamura, Keisuke and Tanaka, Takaaki and Tanimoto, A. and Tashiro, M. and Terada, Y. and Terashima, Y. and Tsuboi, Y. and Tsujimoto, M. and Tsunemi, H. and Tsuru, T. and Uchida, Hiroyuki and Uchida, N. and Uchida, Y. and Uchiyama, H. and Ueda, Y. and Uno, S. and Vink, J. and Watanabe, S. and Williams, Brian J. and Yamada, S. and Yamada, S. and Yamaguchi, Hiroya and Yamaoka, K. and Yamasaki, N. and Yamauchi, M. and Yamauchi, S. and Yaqoob, T. and Yoneyama, T. and Yoshida, Tessei and Yukita, M. and Zhuravleva, I. and Seppi, R. and Aihara, Itsuki and Omiya, Y.}
}

Abstract

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 temperatures of approximately 8 keV across the core, with a prominent cold front and a high-temperature region ($\sim$11 keV) in the northwest. The average gas velocity in the 3 arcmin $\times$ 4 arcmin region around the brightest cluster galaxy (BCG) covered by two Resolve pointings is consistent with that of the BCG to within 40 km s$^{-1}$ and we found modest average velocity dispersion of 230-250 km s$^{-1}$. On the other hand, spatially-resolved spectroscopy reveals interesting variations. A blueshift of up to $\sim$230 km s$^{-1}$ is observed around the east edge of the cold front, where the gas with the lowest specific entropy is found. The region further south inside the cold front shows only a small velocity difference from the BCG; however, its velocity dispersion is enhanced to 400 km s$^{-1}$, implying the development of turbulence. These characteristics indicate that we are observing sloshing motion with some inclination angle following BCG and that gas phases with different specific entropy participate in sloshing with their own velocities, as expected from simulations. No significant evidence for a high-redshift ICM component associated with the subcluster Abell 2319B was found in the region covered by the current Resolve pointings. These results highlight the importance of sloshing and turbulence in shaping the internal structure of Abell 2319. Further deep observations are necessary to better understand the mixing and turbulent processes within the cluster.


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