Atmospheric gas dynamics in the Perseus cluster observed with Hitomi
Atmospheric gas dynamics in the Perseus cluster observed with Hitomi
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DOI：
10.1093/pasj/psx138
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发表时间：
2017-11
影响因子：
2.3
通讯作者：
H. C. F. Aharonian;H. Akamatsu;F. Akimoto;S. Allen;L. Angelini;M. Audard;H. Awaki;M. Axelsson;A. Bamba;M. Bautz;R. Blandford;L. Brenneman;G. Brown;E. Bulbul;E. Cackett;R. Canning;M. Chernyakova;M. Chiao;P. Coppi;E. Costantini;J. Plaa;C. Vries;J. Herder;C. Done;T. Dotani;K. Ebisawa;M. Eckart;T. Enoto;Y. Ezoe;A. Fabian;C. Ferrigno;A. Foster;R. Fujimoto;Y. Fukazawa;A. Furuzawa;M. Galeazzi;L. Gallo;P. Gandhi;M. Giustini;A. Goldwurm;L. Gu;M. Guainazzi;Y. Haba;K. Hagino;K. Hamaguchi;I. Harrus;I. Hatsukade;K. Hayashi;T. Hayashi;T. Hayashi;K. Hayashida;J. Hiraga;A. Hornschemeier;A. Hoshino;J. Hughes;Y. Ichinohe;R. Iizuka;H. Inoue;S. Inoue;Y. Inoue;M. Ishida;K. Ishikawa;Y. Ishisaki;M. Iwai;J. Kaastra;T. Kallman;T. Kamae;J. Kataoka;S. Katsuda;N. Kawai;R. Kelley;C. Kilbourne;T. Kitaguchi;S. Kitamoto;T. Kitayama;T. Kohmura;M. Kokubun;K. Koyama;S. Koyama;P. Kretschmar;H. Krimm;A. Kubota;H. Kunieda;P. Laurent;Shiu-Hang Lee;M. Leutenegger;O. Limousin;M. Loewenstein;K. Long;D. Lumb;G. Madejski;Y. Maeda;D. Maier;K. Makishima;M. Markevitch;H. Matsumoto;K. Matsushita;D. McCammon;B. McNamara;M. Mehdipour;E. Miller;Jonathan M. Miller;S. Mineshige;K. Mitsuda;I. Mitsuishi;T. Miyazawa;T. Mizuno;H. Mori;K. Mori;K. Mukai;H. Murakami;R. Mushotzky;T. Nakagawa;H. Nakajima;T. Nakamori;S. Nakashima;K. Nakazawa;K. Nobukawa;M. Nobukawa;H. Noda;H. Odaka;T. Ohashi;M. Ohno;T. Okajima;N. Ota;M. Ozaki;F. Paerels;S. Paltani;R. Petre;C. Pinto;F. Porter;K. Pottschmidt;C. Reynolds;S. Safi-Harb;S. Saito;K. Sakai;T. Sasaki;G. Sato;Kosuke Sato;R. Sato;M. Sawada;N. Schartel;Peter J. Serlemtsos;H. Seta;M. Shidatsu;A. Simionescu;Randall K. Smith;Y. Soong;L. Stawarz;Y. Sugawara;S. Sugita;A. Szymkowiak;H. Tajima;H. Takahashi;Tadayuki Takahashi;S. Takeda;Y. Takei;T. Tamagawa;T. Tamura;Keigo Tanaka;Takaaki Tanaka;Yasuo Tanaka;Yasuyuki T. Tanaka;M. Tashiro;Y. Tawara;Y. Terada;Y. Terashima;F. Tombesi;H. Tomida;Y. Tsuboi;M. Tsujimoto;H. Tsunemi;T. Tsuru;H. Uchida;H. Uchiyama;Y. Uchiyama;S. Ueda;Y. Ueda;S. Uno;C. M. Urry;E. Ursino;Qian H. S. Wang;S. Watanabe;N. Werner;D. Wilkins;B. Williams;S. Yamada;H. Yamaguchi;K. Yamaoka;N. Yamasaki;M. Yamauchi;S. Yamauchi;T. Yaqoob;Y. Yatsu;D. Yonetoku;I. Zhuravleva;A. Zoghbi
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文献类型：
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作者：
H. C. F. Aharonian;H. Akamatsu;F. Akimoto;S. Allen;L. Angelini;M. Audard;H. Awaki;M. Axelsson;A. Bamba;M. Bautz;R. Blandford;L. Brenneman;G. Brown;E. Bulbul;E. Cackett;R. Canning;M. Chernyakova;M. Chiao;P. Coppi;E. Costantini;J. Plaa;C. Vries;J. Herder;C. Done;T. Dotani;K. Ebisawa;M. Eckart;T. Enoto;Y. Ezoe;A. Fabian;C. Ferrigno;A. Foster;R. Fujimoto;Y. Fukazawa;A. Furuzawa;M. Galeazzi;L. Gallo;P. Gandhi;M. Giustini;A. Goldwurm;L. Gu;M. Guainazzi;Y. Haba;K. Hagino;K. Hamaguchi;I. Harrus;I. Hatsukade;K. Hayashi;T. Hayashi;T. Hayashi;K. Hayashida;J. Hiraga;A. Hornschemeier;A. Hoshino;J. Hughes;Y. Ichinohe;R. Iizuka;H. Inoue;S. Inoue;Y. Inoue;M. Ishida;K. Ishikawa;Y. Ishisaki;M. Iwai;J. Kaastra;T. Kallman;T. Kamae;J. Kataoka;S. Katsuda;N. Kawai;R. Kelley;C. Kilbourne;T. Kitaguchi;S. Kitamoto;T. Kitayama;T. Kohmura;M. Kokubun;K. Koyama;S. Koyama;P. Kretschmar;H. Krimm;A. Kubota;H. Kunieda;P. Laurent;Shiu-Hang Lee;M. Leutenegger;O. Limousin;M. Loewenstein;K. Long;D. Lumb;G. Madejski;Y. Maeda;D. Maier;K. Makishima;M. Markevitch;H. Matsumoto;K. Matsushita;D. McCammon;B. McNamara;M. Mehdipour;E. Miller;Jonathan M. Miller;S. Mineshige;K. Mitsuda;I. Mitsuishi;T. Miyazawa;T. Mizuno;H. Mori;K. Mori;K. Mukai;H. Murakami;R. Mushotzky;T. Nakagawa;H. Nakajima;T. Nakamori;S. Nakashima;K. Nakazawa;K. Nobukawa;M. Nobukawa;H. Noda;H. Odaka;T. Ohashi;M. Ohno;T. Okajima;N. Ota;M. Ozaki;F. Paerels;S. Paltani;R. Petre;C. Pinto;F. Porter;K. Pottschmidt;C. Reynolds;S. Safi-Harb;S. Saito;K. Sakai;T. Sasaki;G. Sato;Kosuke Sato;R. Sato;M. Sawada;N. Schartel;Peter J. Serlemtsos;H. Seta;M. Shidatsu;A. Simionescu;Randall K. Smith;Y. Soong;L. Stawarz;Y. Sugawara;S. Sugita;A. Szymkowiak;H. Tajima;H. Takahashi;Tadayuki Takahashi;S. Takeda;Y. Takei;T. Tamagawa;T. Tamura;Keigo Tanaka;Takaaki Tanaka;Yasuo Tanaka;Yasuyuki T. Tanaka;M. Tashiro;Y. Tawara;Y. Terada;Y. Terashima;F. Tombesi;H. Tomida;Y. Tsuboi;M. Tsujimoto;H. Tsunemi;T. Tsuru;H. Uchida;H. Uchiyama;Y. Uchiyama;S. Ueda;Y. Ueda;S. Uno;C. M. Urry;E. Ursino;Qian H. S. Wang;S. Watanabe;N. Werner;D. Wilkins;B. Williams;S. Yamada;H. Yamaguchi;K. Yamaoka;N. Yamasaki;M. Yamauchi;S. Yamauchi;T. Yaqoob;Y. Yatsu;D. Yonetoku;I. Zhuravleva;A. Zoghbi
扩展了 Hitomi 合作报告的早期测量结果（2016，Nature，535, 117），我们利用 Hitomi 卫星获得的观测结果检查了英仙座星团中央 100 kpc 内的大气气体运动。在校正望远镜的点扩散函数并使用光学细发射线后，我们发现热气体的视线速度色散非常低并且基本均匀。朝向中央活动星系核（AGN）和朝向 AGN 膨胀的西北“幽灵”气泡的速度色散达到最大值约 200 km s(-1)。在观测区域内的其他地方，速度色散在 100 km s(-1) 附近似乎恒定。我们还检测到整个星团核心的速度梯度幅度为 100 km s(-1)，这与核心气体的大规模晃动一致。如果观测到的气体运动是各向同性的，则动压支持小于簇核中热压支持的 10%。分辨率良好的光学细发射线具有高斯形状，表明湍流驱动规模可能低于 100 kpc，这与 AGN 喷射膨胀气泡的尺寸一致。我们还报告了团簇内介质中离子温度的第一次测量，我们发现它与电子温度一致。此外，我们还提出了对最亮星团星系 NGC 1275 红移的新测量。
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.