Atmospheric gas dynamics in the Perseus cluster observed with Hitomi

被引：91

作者：

Aharonian, Felix ^{[1
,2
,3
]}

Akamatsu, Hiroki ^{[4
]}

Akimoto, Fumie ^{[5
]}

Allen, Steven W. ^{[6
,7
,8
]}

Angelini, Lorella ^{[9
]}

Audard, Marc ^{[10
]}

Awaki, Hisamitsu ^{[11
]}

Axelsson, Magnus ^{[12
,13
]}

Bamba, Aya ^{[14
,15
]}

Bautz, Marshall W. ^{[16
]}

Blandford, Roger ^{[6
,7
,8
]}

Brenneman, Laura W. ^{[17
]}

Brown, Gregory, V ^{[18
]}

Bulbul, Esra ^{[16
]}

Cackett, Edward M. ^{[19
]}

Canning, Rebecca E. A. ^{[6
,7
]}

Chernyakova, Maria ^{[1
]}

Chiao, Meng P. ^{[9
]}

Coppi, Paolo S. ^{[20
,21
]}

Costantini, Elisa ^{[4
]}

de Plaa, Jelle ^{[4
]}

de Vries, Cor P. ^{[4
]}

den Herder, Jan-Willem ^{[4
]}

Done, Chris ^{[22
]}

Dotani, Tadayasu ^{[23
]}

Ebisawa, Ken ^{[23
]}

Eckart, Megan E. ^{[9
]}

Enoto, Teruaki ^{[24
,25
]}

Ezoe, Yuichiro ^{[26
]}

Fabian, Andrew C. ^{[27
]}

Ferrigno, Carlo ^{[10
]}

Foster, Adam R. ^{[17
]}

Fujimoto, Ryuichi ^{[28
]}

Fukazawa, Yasushi ^{[29
]}

Furuzawa, Akihiro ^{[30
]}

Galeazzi, Massimiliano ^{[31
]}

Gallo, Luigi C. ^{[32
]}

Gandhi, Poshak ^{[33
]}

Giustini, Margherita ^{[4
]}

Goldwurm, Andrea ^{[34
,35
]}

Gu, Liyi ^{[4
]}

Guainazzi, Matteo ^{[36
]}

Haba, Yoshito ^{[37
]}

Hagino, Kouichi ^{[38
]}

Hamaguchi, Kenji ^{[9
,39
]}

Harrus, Ilana M. ^{[9
,39
]}

Hatsukade, Isamu ^{[40
]}

Hayashi, Katsuhiro ^{[23
,41
]}

Hayashi, Takayuki ^{[41
]}

Hayashi, Tasuku ^{[14
,23
]}

机构：

[1] Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland

[2] Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany

[3] Gran Sasso Sci Inst, Viale Francesco Crispi 7, I-67100 Laquila, AQ, Italy

[4] SRON Netherlands Inst Space Res, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands

[5] Nagoya Univ, Inst Space Earth Environm Res, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan

[6] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, 452 Lomita Mall, Stanford, CA 94305 USA

[7] Stanford Univ, Dept Phys, 382 Via Pueblo Mall, Stanford, CA 94305 USA

[8] SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA

[9] NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA

[10] Univ Geneva, Dept Astron, Ch Ecogia 16, CH-1290 Versoix, Switzerland

[11] Ehime Univ, Dept Phys, Bunkyo Cho, Matsuyama, Ehime 7908577, Japan

[12] Stockholm Univ, Dept Phys, S-10691 Stockholm, Sweden

[13] Stockholm Univ, Oskar Klein Ctr, S-10691 Stockholm, Sweden

[14] Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan

[15] Univ Tokyo, Res Ctr Early Universe, Sch Sci, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan

[16] MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[17] Smithsonian Astrophys Observ, 60 Garden St,MS-4, Cambridge, MA 02138 USA

[18] Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA

[19] Wayne State Univ, Dept Phys & Astron, 666 W Hancock St, Detroit, MI 48201 USA

[20] Yale Univ, Dept Astron, New Haven, CT 06520 USA

[21] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[22] Univ Durham, Ctr Extragalact Astron, Dept Phys, South Rd, Durham DH1 3LE, England

[23] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshino Dai, Sagamihara, Kanagawa 2525210, Japan

[24] Kyoto Univ, Dept Astron, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto, Kyoto 6068502, Japan

[25] Kyoto Univ, Hakubi Ctr Adv Res, Sakyo Ku, Kyoto, Kyoto 6068501, Japan

[26] Tokyo Metropolitan Univ, Dept Phys, 1-1 Minami Osawa, Hachioji, Tokyo 1920397, Japan

[27] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[28] Kanazawa Univ, Fac Math & Phys, Kakuma Machi, Kanazawa, Ishikawa 9201192, Japan

[29] Hiroshima Univ, Sch Sci, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 7398526, Japan

[30] Fujita Hlth Univ, Kutsukake Cho, Toyoake, Aichi 4701192, Japan

[31] Univ Miami, Phys Dept, 1320 Campo Sano Dr, Coral Gables, FL 33146 USA

[32] St Marys Univ, Dept Astron & Phys, 923 Robie St, Halifax, NS B3H 3C3, Canada

[33] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England

[34] Lab APC, 10 Rue Alice Domon & Leonie Duquet, F-75013 Paris, France

[35] CEA Saclay, F-91191 Gif Sur Yvette, France

[36] European Space Technol Ctr, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands

[37] Aichi Univ Educ, Dept Phys & Astron, 1 Hirosawa,Igaya Cho, Kariya, Aichi 4488543, Japan

[38] Tokyo Univ Sci, Dept Phys, 2641 Yamazaki, Noda, Chiba 2788510, Japan

[39] Univ Maryland Baltimore Cty, Dept Phys, 1000 Hilltop Circle, Baltimore, MD 21250 USA

[40] Univ Miyazaki, Dept Appl Phys & Elect Engn, 1-1 Gakuen Kibanadai Nishi, Miyazaki, Miyazaki 8892192, Japan

[41] Nagoya Univ, Dept Phys, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648602, Japan

[42] Osaka Univ, Dept Earth & Space Sci, 1-1 Machikaneyama Cho, Toyonaka, Osaka 5600043, Japan

[43] Kwansei Gakuin Univ, Dept Phys, 2-1 Gakuen, Sanda, Hyogo 6691337, Japan

[44] Rikkyo Univ, Dept Phys, Toshima Ku, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan

[45] Rutgers State Univ, Dept Phys & Astron, 136 Frelinghuysen Rd, Piscataway, NJ 08854 USA

[46] Meisei Univ, 2-1-1 Hodokubo, Hino, Tokyo 1918506, Japan

[47] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

[48] Waseda Univ, Res Inst Sci & Engn, Shinjuku Ku, 3-4-1 Ohkubo, Tokyo 1698555, Japan

[49] Chuo Univ, Dept Phys, Bunkyo Ku, 1-13-27 Kasuga, Tokyo 1128551, Japan

[50] Tokyo Inst Technol, Dept Phys, Meguro Ku, 2-12-1 Ookayama, Tokyo 2121, Japan

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2018年 / 70卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

galaxies: clusters: individual (Perseus); galaxies: clusters: intracluster medium; galaxies: individual (NGC 1275); X-rays: galaxies: clusters; ACTIVE GALACTIC NUCLEUS; DEEP CHANDRA OBSERVATION; X-RAY; INTRACLUSTER MEDIUM; GALAXY CLUSTER; COOLING FLOWS; SUZAKU OBSERVATIONS; TURBULENT VELOCITY; GASEOUS ATMOSPHERE; CENTAURUS CLUSTER;

D O I：

10.1093/pasj/psx138

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Extending the earlier measurements reported in Hitomi collaboration (2016, Nature, 535, 117), we examine the atmospheric gas motions within the central 100 kpc of the Perseus cluster using observations obtained with the Hitomi satellite. After correcting for the point spread function of the telescope and using optically thin emission lines, we find that the line-of-sight velocity dispersion of the hot gas is remarkably low and mostly uniform. The velocity dispersion reaches a maxima of approximately 200 km s(-1) toward the central active galactic nucleus (AGN) and toward the AGN inflated northwestern "ghost" bubble. Elsewhere within the observed region, the velocity dispersion appears constant around 100 km s(-1). We also detect a velocity gradient with a 100 km s(-1) amplitude across the cluster core, consistent with large-scale sloshing of the core gas. If the observed gas motions are isotropic, the kinetic pressure support is less than 10% of the thermal pressure support in the cluster core. The well-resolved, optically thin emission lines have Gaussian shapes, indicating that the turbulent driving scale is likely below 100 kpc, which is consistent with the size of the AGN jet inflated bubbles. We also report the first measurement of the ion temperature in the intracluster medium, which we find to be consistent with the electron temperature. In addition, we present a new measurement of the redshift of the brightest cluster galaxy NGC 1275.

引用

页数：32

共 50 条

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