宇宙物理学研究系
  1. 研究者リスト
  2. 田村 隆幸

田村 隆幸

タムラ タカユキ  (Takayuki Tamura)

基本情報

所属
国立研究開発法人宇宙航空研究開発機構 宇宙科学研究所 助教
総合研究大学院大学 物理科学研究科 助教
学位
理学博士(1998年3月)
J-GLOBAL ID
200901028844431929
researchmap会員ID
5000050859
外部リンク
銀河、銀河団などの宇宙の大規模構造の形成と進化の研究。主にX線による観測を手段とします。

愛知県一宮高校卒業、
名古屋大学 理学部卒業、
東京大学理学系研究科 理学博士取得、
宇宙科学研究所、SRON(NL)にてポスドク。
現在、JAXA/宇宙科学研究所勤務。

主要な研究キーワード

 10
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研究分野

 2

経歴

 7
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受賞

 3

主要な論文

 74
  • Tamura, Takayuki, Fabian, Andrew C., Gandhi, Poshak, Gu, Liyi, Kamada, Ayuki, Kitayama, Tetsu, Loewenstein, Michael, Maeda, Yoshitomo, Matsushita, Kyoko, McCammon, Dan, Mitsuda, Kazuhisa, Nakashima, Shinya, Porter, Scott, Pinto, Ciro, Sato, Kosuke, Tombesi, Francesco, Yamasaki, Noriko Y.
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 71(3) 2018年11月  査読有り
    We present results of a search for unidentified line emission and absorption signals in the 2-12keV energy band of spectra extracted from Perseus Cluster core region observations obtained with the 5eV energy resolution Hitomi Soft X-ray Spectrometer. No significant unidentified line emission or absorption is found. Line flux upper limits (1 sigma per resolution element) vary with photon energy and assumed intrinsic width, decreasing from 100 photons cm$^{-2}$ s$^{-1}$ sr $^{-1}$ at 2keV to $<10$ cm$^{-2}$ s$^{-1}$ sr $^{-1}$ over most of the 5-10 keV energy range for a Gaussian line with Doppler broadening of 640 km/s. Limits for narrower and broader lines have a similar energy dependence and are systematically smaller and larger, respectively. These line flux limits are used to constrain the decay rate of hypothetical dark matter candidates. For the sterile neutrino decay rate, new constraints over the the mass range of 4-24 keV with mass resolution better than any previous X-ray analysis are obtained. Additionally, the accuracy of relevant thermal spectral models and atomic data are evaluated. The Perseus cluster spectra may be described by a composite of multi-temperature thermal and AGN power-law continua. Superposed on these, a few line emission signals possibly originating from unmodeled atomic processes (including Si XIV and Fe XXV) are marginally detected and tabulated. Comparisons with previous X-ray upper limits and future prospects for dark matter searches using high-energy resolution spectroscopy are discussed....
  • Hitomi Collaboration, Felix A. Aharonian, Hiroki Akamatsu, Fumie Akimoto, Steven W. Allen, Lorella Angelini, Keith A. Arnaud, Marc Audard, Hisamitsu Awaki, Magnus Axelsson, Aya Bamba, Marshall W. Bautz, Roger D. Blandford, Laura W. Brenneman, Gregory V. Brown, Esra Bulbul, Edward M. Cackett, Maria Chernyakova, Meng P. Chiao, Paolo Coppi, Elisa Costantini, Jelle de Plaa, Jan-Willem den Herder, Chris Done, Tadayasu Dotani, Ken Ebisawa, Megan E. Eckart, Teruaki Enoto, Yuichiro Ezoe, Andrew C. Fabian, Carlo Ferrigno, Adam R. Foster, Ryuichi Fujimoto, Yasushi Fukazawa, Akihiro Furuzawa, Massimiliano Galeazzi, Luigi C. Gallo, Poshak Gandhi, Margherita Giustini, Andrea Goldwurm, Liyi Gu, Matteo Guainazzi, Yoshito Haba, Kouichi Hagino, Kenji Hamaguchi, Ilana Harrus, Isamu Hatsukade, Katsuhiro Hayashi, Takayuki Hayashi, Kiyoshi Hayashida, Junko Hiraga, Ann E. Hornschemeier, Akio Hoshino, John P. Hughes, Yuto Ichinohe, Ryo Iizuka, Hajime Inoue, Shota Inoue, Yoshiyuki Inoue, Kazunori Ishibashi, Manabu Ishida, Kumi Ishikawa, Yoshitaka Ishisaki, Masayuki Itoh, Masachika Iwai, Naoko Iyomoto, Jelle S. Kaastra, Timothy Kallman, Tuneyoshi Kamae, Erin Kara, Jun Kataoka, Satoru Katsuda, Junichiro Katsuta, Madoka Kawaharada, Nobuyuki Kawai, Richard L. Kelley, Dmitry Khangulyan, Caroline A. Kilbourne, Ashley L. King, Takao Kitaguchi, Shunji Kitamoto, Tetsu Kitayama, Takayoshi Kohmura, Motohide Kokubun, Shu Koyama, Katsuji Koyama, Peter Kretschmar, Hans A. Krimm, Aya Kubota, Hideyo Kunieda, Philippe Laurent, Francois Lebrun, Shiu-Hang Lee, Maurice Leutenegger, Olivier Limousin, Michael Loewenstein, Knox S. Long, David Lumb, Grzegorz M. Madejski, Yoshitomo Maeda, Daniel Maier, Kazuo Makishima, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Brian R. McNamara, Missagh Mehdipour, Eric D. Miller, Jon M. Miller, Shin Mineshige, Kazuhisa Mitsuda, Ikuyuki Mitsuishi, Takuya Miyazawa, Tsunefumi Mizuno, Hideyuki Mori, Koji Mori, Harvey Moseley, Koji Mukai, Hiroshi Murakami, Toshio Murakami, Richard F. Mushotzky, Takao Nakagawa, Hiroshi Nakajima, Takeshi Nakamori, Toshio Nakano, Shinya Nakashima, Kazuhiro Nakazawa, Kumiko Nobukawa, Masayoshi Nobukawa, Hirofumi Noda, Masaharu Nomachi, Steve L. O'Dell, Hirokazu Odaka, Takaya Ohashi, Masanori Ohno, Takashi Okajima, Naomi Ota, Masanobu Ozaki, Frits Paerels, Stephane Paltani, Arvind Parmar, Robert Petre, Ciro Pinto, Martin Pohl, F. Scott Porter, Katja Pottschmidt, Brian D. Ramsey, Christopher S. Reynolds, Helen R. Russell, Samar Safi-Harb, Shinya Saito, Kazuhiro Sakai, Hiroaki Sameshima, Toru Sasaki, Goro Sato, Kosuke Sato, Rie Sato, Makoto Sawada, Norbert Schartel, Peter J. Serlemitsos, Hiromi Seta, Megumi Shidatsu, Aurora Simionescu, Randall K. Smith, Yang Soong, Lukasz Stawarz, Yasuharu Sugawara, Satoshi Sugita, Andrew E. Szymkowiak, Hiroyasu Tajima, Hiromitsu Takahashi, Tadayuki Takahashi, Shin'ichiro Takeda, Yoh Takei, Toru Tamagawa, Keisuke Tamura, Takayuki Tamura, Takaaki Tanaka, Yasuo Tanaka, Yasuyuki Tanaka, Makoto Tashiro, Yuzuru Tawara, Yukikatsu Terada, Yuichi Terashima, Francesco Tombesi, Hiroshi Tomida, Yohko Tsuboi, Masahiro Tsujimoto, Hiroshi Tsunemi, Takeshi Tsuru, Hiroyuki Uchida, Hideki Uchiyama, Yasunobu Uchiyama, Shutaro Ueda, Yoshihiro Ueda, Shiro Ueno, Shin'ichiro Uno, C. Meg Urry, Eugenio Ursino, Cor P. de Vries, Shin Watanabe, Norbert Werner, Daniel R. Wik, Dan R. Wilkins, Brian J. Williams, Shinya Yamada, Hiroya Yamaguchi, Kazutaka Yamaoka, Noriko Y. Yamasaki, Makoto Yamauchi, Shigeo Yamauchi, Tahir Yaqoob, Yoichi Yatsu, Daisuke Yonetoku, Atsumasa Yoshida, Irina Zhuravleva, Abderahmen Zoghbi
    The Astrophysical Journal 837(1) L15-L15 2016年7月25日  
    High-resolution X-ray spectroscopy with Hitomi was expected to resolve the origin of the faint unidentified E=3.5 keV emission line reported in several low-resolution studies of various massive systems, such as galaxies and clusters, including the Perseus cluster. We have analyzed the Hitomi first-light observation of the Perseus cluster. The emission line expected for Perseus based on the XMM-Newton signal from the large cluster sample under the dark matter decay scenario is too faint to be detectable in the Hitomi data. However, the previously reported 3.5 keV flux from Perseus was anomalously high compared to the sample-based prediction. We find no unidentified line at the reported high flux level. Taking into account the XMM measurement uncertainties for this region, the inconsistency with Hitomi is at a 99% significance for a broad dark-matter line and at 99.7% for a narrow line from the gas. We do not find anomalously high fluxes of the nearby faint K line or the Ar satellite line that were proposed as explanations for the earlier 3.5 keV detections. We do find a hint of a broad excess near the energies of high-n transitions of Sxvi (E=3.44 keV rest-frame) -- a possible signature of charge exchange in the molecular nebula and another proposed explanation for the unidentified line. While its energy is consistent with XMM pn detections, it is unlikely to explain the MOS signal. A confirmation of this interesting feature has to wait for a more sensitive observation with a future calorimeter experiment.
  • AHARONIAN Felix, CHERNYAKOVA Maria, AHARONIAN Felix, AKAMATSU Hiroki, COSTANTINI Elisa, DE PLAA Jelle, HERDER Jan-Willem den, GIUSTINI Margherita, GU Liyi, KAASTRA Jelle, MEHDIPOUR Missagh, DE VRIES Cor, AKIMOTO Fumie, FURUZAWA Akihiro, HAYASHI Takayuki, ISHIBASHI Kazunori, KUNIEDA Hideyo, MITSUISHI Ikuyuki, MIYAZAWA Takuya, TAMURA Keisuke, TAWARA Yuzuru, YAMAOKA Kazutaka, ALLEN Steven W., BLANDFORD Roger, KAMAE Tuneyoshi, KING Ashley, MADEJSKI Grzegorz, WERNER Norbert, ZHURAVLEVA Irina, ALLEN Steven W., BLANDFORD Roger, MADEJSKI Grzegorz, ANABUKI Naohisa, HAYASHIDA Kiyoshi, NAGINO Ryo, NAKAJIMA Hiroshi, TSUNEMI Hiroshi, ANGELINI Lorella, ARNAUD Keith, CHIAO Meng, ECKART Megan, HAMAGUCHI Kenji, HARRUS Ilana, HORNSCHEMEIER Ann, KALLMAN Timothy, KELLEY Richard, KILBOURNE Caroline, KRIMM Hans, LEUTENEGGER Maurice, LOEWENSTEIN Michael, MARKEVITCH Maxim, MORI Hideyuki, MOSELEY Harvey, MUKAI Koji, OKAJIMA Takashi, PETRE Robert, PORTER F. Scott, POTTSCHMIDT Katja, SAKAI Kazuhiro, SERLEMITSOS Peter, SOONG Yang, TOMBESI Francesco, WIK Daniel, WILLIAMS Brian, YAMAGUCHI Hiroya, YAQOOB Tahir, ARNAUD Keith, KARA Erin, LOEWENSTEIN Michael, MUSHOTZKY Richard, REYNOLDS Christopher, AUDARD Marc, FERRIGNO Carlo, PALTANI Stephane, POHL Martin, AWAKI Hisamitsu, TERASHIMA Yuichi, AXELSSON Magnus, EZOE Yuichiro, ISHISAKI Yoshitaka, OHASHI Takaya, SETA Hiromi, YAMADA Shinya, BAMBA Aya, NAKAZAWA Kazuhiro, BAUTZ Marshall, BULBUL Esra, MILLER Eric, BRENNEMAN Laura, FOSTER Adam, SMITH Randall, BROWN Gregory V., CACKETT Edward, FABIAN Andrew C., PINTO Ciro, RUSSELL Helen, COPPI Paolo, SZYMKOWIAK Andrew, URRY Meg, DONE Chris, DOTANI Tadayasu, EBISAWA Ken, GUAINAZZI Matteo, HAGINO Kouichi, HAYASHI Katsuhiro, IIZUKA Ryo, INOUE Hajime, INOUE Yoshiyuki, ISHIDA Manabu, KOKUBUN Motohide, KOYAMA Shu, LEE Shiu-Hang, MAEDA Yoshitomo, MITSUDA Kazuhisa, NAKAGAWA Takao, NAKASHIMA Shinya, ODAKA Hirokazu, OZAKI Masanobu, SAMESHIMA Hiroaki, SATO Goro
    Nature (London) 535(7610) 2016年7月15日  
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MISC

 87
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書籍等出版物

 1

講演・口頭発表等

 4

担当経験のある科目(授業)

 2

所属学協会

 2

共同研究・競争的資金等の研究課題

 7
  • 日本学術振興会 科学研究費助成事業 学術変革領域研究(A) 2020年11月 - 2025年3月
    山崎 典子, 田村 隆幸, 林 佑, 平山 文紀, シミオネスク オーロラ, 佐藤 浩介, 神代 暁, 満田 和久
  • 日本学術振興会 科学研究費助成事業 基盤研究(C) 2014年4月 - 2018年3月
    大西 浩次, 嶺重 慎, 高橋 真聡, 三好 真, 西山 正吾, 亀谷 收, 高橋 労太, 衣笠 健三, 斎藤 正雄, 西岡 真木子, 井出 秀美, 内藤 誠一郎, 鈴木 幸野, 堀田 英之, 小南 淳子, 木内 建太, 大須 賀健, 吉田 直紀, 斉田 浩見, 川島 朋尚, 南部 保貞, 孝森 洋介, 田村 隆幸, 秦 和弘, 秋山 和徳, 波田野 聡美, 篠原 秀雄, 有本 淳一, 渡會 健也, 斉藤 秀樹, 大羽 徹, 日高 正貴, 竹浦 史朗, 高橋 淳, 本間 隆幸, 根本 しおみ, 豊増 伸治, 塚田 健
  • 日本学術振興会 科学研究費助成事業 基盤研究(C) 2012年4月 - 2015年3月
    田村 隆幸, 林田 清, 北山 哲
  • 日本学術振興会 科学研究費助成事業 2007年 - 2009年
    長瀬 文昭, 海老沢 研, 北本 俊二, 吉田 篤正, 松崎 恵一, 田村 隆幸, 矢治 健太郎, 宇野 伸一郎, 松下 恭子, 坪井 陽子, 平林 久, 辻本 匡弘, 馬場 彩, 村上 弘志, 久保田 あや, 飯塚 亮, 古田 豊, 林 壮一, 綾部 俊二, 吉田 清典, 野口 語, 川端 啓明, 宮脇 亮介, 沢田 紗衣子, 岩本 ひとみ, 吉田 鉄生, 馬場 亮輔, 菅原 泰晴, 戸塚 晃太, 朝岡 育子, 篠原 秀雄, 八木橋 伸佳, 鵜沢 明子, 楠 進吾
  • 文部科学省 科学研究費補助金(若手研究(B)) 2004年 - 2006年
    田村 隆幸
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