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  2. Yuusuke Uchida

Yuusuke Uchida

  (内田 悠介)

Profile Information

Affiliation
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
ORCID ID
 https://orcid.org/0000-0002-7962-4136
J-GLOBAL ID
202501003078234700
researchmap Member ID
R000092664

Research History

 5

Papers

 84
  • Matthew G. Baring, Jacob Casey, Sohee Chun, Ephraim Gau, Tomohiro Hakamata, Kun Hu, Daiki Ishi, Fabian Kislat, Mózsi Kiss, Merlin Kole, Henric Krawczynski, Haruki Kuramoto, Lindsey Lisalda, Bingkun Liu, Yoshitomo Maeda, Hironori Matsumoto, Shravan Vengalil Menon, Takuya Miyazawa, Kaito Murakami, Takashi Okajima, Mark Pearce, Brian Rauch, Kentaro Shirahama, Sean Spooner, Hiromitsu Takahashi, Sayana Takatsuka, Yuusuke Uchida, Varun, Andrew Thomas West
    The Astrophysical Journal, 1002(2) 222-222, May 8, 2026  
    Abstract We present updated hard X-ray polarization measurements of the Crab pulsar and nebula obtained with the balloon-borne polarimeter XL-Calibur in the ∼19–64 keV energy range. During the flight, intermittent failure of the Global Positioning System (GPS) receiver resulted in poorly constrained timing for ∼38% of the Crab dataset. By implementing a new phase recovery method that reconstructs timing during extended GPS-off intervals, phase tag data are recovered for ∼95% of the GPS-off dataset, increasing the precision of the phase-resolved analysis. Phase information for the data is recovered by using the Crab pulsar, with its 33 ms period, as an external timing source. Using a Markov Chain Monte Carlo framework to jointly fit phase offsets and frequency derivatives, sufficient phase accuracy is achieved across multiple periods without GPS for a phase-resolved analysis. This enables inclusion of nearly the full dataset in the polarization study. The polarization degree of the nebular emission is found to be (27.7 ± 4.9)% at a polarization angle of 127 2 ± 5 1, confirming previous XL-Calibur results and remaining aligned with the Crab’s spin axis, consistent with synchrotron emission from the inner nebula. Phase-resolved measurements show that the off-pulse and bridge intervals exhibit a strong polarization, while the pulsar peaks, although weakly constrained, remain in agreement with the softer-energy trends of IXPE. These findings reinforce a scenario in which hard X-ray emission arises primarily in the nebular torus and wind regions. The successful recovery of precise phase tagging from GPS-off data demonstrates the capacity to use the pulsar as an external clock even in the case of sparsely populated data.
  • Kaito Ninoyu, Shinya Yamada, Natalie Hell, Elisa Costantini, Oluwashina Adegoke, Paul Draghis, Ken Ebisawa, Javier A Garcia, Edmund Hodges-Kluck, Shunji Kitamoto, Shogo Kobayashi, Takayoshi Kohmura, Aya Kubota, Jon M Miller, Misaki Mizumoto, Tsunefumi Mizuno, Hiromitsu Takahashi, Yuusuke Uchida, Kazutaka Yamaoka, Sixuan Zhang, Ryota Tomaru, Seoru Ito
    Publications of the Astronomical Society of Japan, Apr 28, 2026  
  • Seoru Ito, Shinya Yamada, Kaito Ninoyu, Yuusuke Uchida, Takayoshi Kohmura, Ryota Hayakawa, Shunji Kitamoto, Nao Kominato, Yusuke Sakai, Shintaro Kaneko, Misaki Mizumoto, Toru Tamagawa, Keisuke Uchiyama, Toshiki Sato
    The Astrophysical Journal Letters, Apr 20, 2026  
  • Marc Audard, Hisamitsu Awaki, Ralf Ballhausen, Aya Bamba, Ehud Behar, Rozenn Boissay-Malaquin, Laura Brenneman, Gregory V. Brown, Lia Corrales, Elisa Costantini, Renata Cumbee, María Díaz Trigo, Chris Done, Tadayasu Dotani, Ken Ebisawa, Megan E. Eckart, Dominique Eckert, Teruaki Enoto, Satoshi Eguchi, Yuichiro Ezoe, Adam Foster, Ryuichi Fujimoto, Yutaka Fujita, Yasushi Fukazawa, Kotaro Fukushima, Akihiro Furuzawa, Luigi Gallo, Javier A. Garcia, Liyi Gu, Matteo Guainazzi, Kouichi Hagino, Kenji Hamaguchi, Isamu Hatsukade, Katsuhiro Hayashi, Takayuki Hayashi, Natalie Hell, Edmund Hodges-Kluck, Ann Hornschemeier, Yuto Ichinohe, Daiki Ishi, Manabu Ishida, Kumi Ishikawa, Yoshitaka Ishisaki, Jelle Kaastra, Timothy Kallman, Erin Kara, Satoru Katsuda, Yoshiaki Kanemaru, Richard Kelley, Caroline Kilbourne, Shunji Kitamoto, Shogo Kobayashi, Takayoshi Kohmura, Aya Kubota, Maurice Leutenegger, Michael Loewenstein, Yoshitomo Maeda, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Brian McNamara, François Mernier, Eric D. Miller, Jon M. Miller, Ikuyuki Mitsuishi, Misaki Mizumoto, Tsunefumi Mizuno, Koji Mori, Koji Mukai, Hiroshi Murakami, Richard Mushotzky, Hiroshi Nakajima, Kazuhiro Nakazawa, Jan-Uwe Ness, Kumiko Nobukawa, Masayoshi Nobukawa, Hirofumi Noda, Hirokazu Odaka, Shoji Ogawa, Anna Ogorzalek, Takashi Okajima, Naomi Ota, Stephane Paltani, Robert Petre, Paul Plucinsky, Frederick Scott Porter, Katja Pottschmidt, Kosuke Sato, Toshiki Sato, Makoto Sawada, Hiromi Seta, Megumi Shidatsu, Aurora Simionescu, Randall Smith, Hiromasa Suzuki, Andrew Szymkowiak, Hiromitsu Takahashi, Mai Takeo, Toru Tamagawa, Keisuke Tamura, Takaaki Tanaka, Atsushi Tanimoto, Makoto Tashiro, Yukikatsu Terada, Yuichi Terashima, Yohko Tsuboi, Masahiro Tsujimoto, Hiroshi Tsunemi, Takeshi G. Tsuru, Ayşegül Tümer, Hiroyuki Uchida, Nagomi Uchida, Yuusuke Uchida, Hideki Uchiyama, Yoshihiro Ueda, Shinichiro Uno, Jacco Vink, Shin Watanabe, Brian J. Williams, Satoshi Yamada, Shinya Yamada, Hiroya Yamaguchi, Kazutaka Yamaoka, Noriko Yamasaki, Makoto Yamauchi, Shigeo Yamauchi, Tahir Yaqoob, Tomokage Yoneyama, Tessei Yoshida, Mihoko Yukita, Irina Zhuravleva, Kanta Fujiwara, Takuma Izumi, Taiki Kawamuro, Keiichi Maeda, Yuya Nakatani, Frits Paerels, Ryosuke Uematsu, Bert Vander Meulen
    Nature Astronomy, Mar 31, 2026  
  • Marc Audard, Hisamitsu Awaki, Ralf Ballhausen, Aya Bamba, Ehud Behar, Rozenn Boissay-Malaquin, Laura Brenneman, Gregory V. Brown, Lia Corrales, Elisa Costantini, Renata Cumbee, María Díaz Trigo, Chris Done, Tadayasu Dotani, Ken Ebisawa, Megan E. Eckart, Dominique Eckert, Satoshi Eguchi, Teruaki Enoto, Yuichiro Ezoe, Adam Foster, Ryuichi Fujimoto, Yutaka Fujita, Yasushi Fukazawa, Kotaro Fukushima, Akihiro Furuzawa, Luigi Gallo, Javier A. García, Liyi Gu, Matteo Guainazzi, Kouichi Hagino, Kenji Hamaguchi, Isamu Hatsukade, Katsuhiro Hayashi, Takayuki Hayashi, Natalie Hell, Edmund Hodges-Kluck, Ann Hornschemeier, Yuto Ichinohe, Daiki Ishi, Manabu Ishida, Kumi Ishikawa, Yoshitaka Ishisaki, Jelle Kaastra, Timothy Kallman, Erin Kara, Satoru Katsuda, Yoshiaki Kanemaru, Richard Kelley, Caroline Kilbourne, Shunji Kitamoto, Shogo Kobayashi, Takayoshi Kohmura, Aya Kubota, Maurice Leutenegger, Michael Loewenstein, Yoshitomo Maeda, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Brian McNamara, François Mernier, Eric D. Miller, Jon M. Miller, Ikuyuki Mitsuishi, Misaki Mizumoto, Tsunefumi Mizuno, Koji Mori, Koji Mukai, Hiroshi Murakami, Richard Mushotzky, Hiroshi Nakajima, Kazuhiro Nakazawa, Jan-Uwe Ness, Kumiko Nobukawa, Masayoshi Nobukawa, Hirofumi Noda, Hirokazu Odaka, Shoji Ogawa, Anna Ogorzalek, Takashi Okajima, Naomi Ota, Stephane Paltani, Robert Petre, Paul Plucinsky, Frederick S. Porter, Katja Pottschmidt, Kosuke Sato, Toshiki Sato, Makoto Sawada, Hiromi Seta, Megumi Shidatsu, Aurora Simionescu, Randall Smith, Hiromasa Suzuki, Andrew Szymkowiak, Hiromitsu Takahashi, Mai Takeo, Toru Tamagawa, Keisuke Tamura, Takaaki Tanaka, Atsushi Tanimoto, Makoto Tashiro, Yukikatsu Terada, Yuichi Terashima, Yohko Tsuboi, Masahiro Tsujimoto, Hiroshi Tsunemi, Takeshi Tsuru, Ayşegül Tümer, Hiroyuki Uchida, Nagomi Uchida, Yuusuke Uchida, Hideki Uchiyama, Yoshihiro Ueda, Shinichiro Uno, Jacco Vink, Shin Watanabe, Brian J. Williams, Satoshi Yamada, Shinya Yamada, Hiroya Yamaguchi, Kazutaka Yamaoka, Noriko Yamasaki, Makoto Yamauchi, Shigeo Yamauchi, Tahir Yaqoob, Tomokage Yoneyama, Tessei Yoshida, Mihoko Yukita, Irina Zhuravleva, Kazuki Ampuku, Erin Boettcher, Skylar Grayson, Gabriel Grell, Peter Kosec, Seiya Sasamata, Evan Scannapieco
    Nature, 651(8107) 909-913, Mar 25, 2026  
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Misc.

 35
  • 福島光太郎, MILLER Eric, 藤田裕, SARKAR Arnab, 太田直美, 内田悠介, 松下恭子, ZHURAVLEVA Irina, MCCALL Hannah, 深澤泰司, 佐藤浩介
    日本天文学会年会講演予稿集, 2025, 2025  
  • 高橋, 弘充, AF MALMBORG, Filip, 青柳, 美緒, 粟木, 久光, BOSE, Richard, BRAUN, Dana, CHUN, Sohee, DE GERONIMO, Gianluigi, 榎戸, 輝揚, ERRANDO, Manel, 深沢, 泰司, 古澤, 彰浩, GADSON, Thomas, GAU, Epharaim, GUARINO, Victor, 郡司, 修一, 袴田, 知宏, 林, 多佳由, HEATWOLE, Scott, HOSSEN, Arman, HU, Kun, 今村, 竜太, 今澤, 遼, 伊師, 大貴, 石橋, 和紀, 石田, 学, 石渡, 幸太, IYER, Nirmal Kumar, HARMON, Keon, 鴨川, 航, KISLAT, Fabian, KISS, Mozsi, 北口, 貴雄, KLEPPER, Kassi, KRAWCZYNSKI, Henric, 倉本, 春希, LANZI, James, LISALDA, Lindsey, 前田, 良知, 眞武, 寛人, 松本, 浩典, 松本, 岳人, 宮本, 明日香, 宮澤, 拓也, 水野, 恒史, 岡島, 崇, PEARCE, Mark, PETERSON, Zachary, RAHBARDAR MOJAVER, Mehrnossh, RAUCH, Brian, RODRIGUEZ CAVERO, Nicole, RYDE, Felix, 斎藤, 芳隆, 阪本, 菜月, 島, 耕平, 白濱, 健太郎, SIMBURGER, Garry, SPOONER, Sean, STANA, Theodor-Adrian, STUCHLIK, David, 武尾, 舞, 玉川, 徹, 田村, 啓輔, 田中, 虎次郎, 常深, 博, 内田, 和海, 内田, 悠介, WEST, Andrew, WULF, Eric, 善本, 真梨那, XL-Caliburチーム,
    大気球シンポジウム: 2024年度, Oct, 2024  
    レポート番号: isas24-sbs-008
  • 寺田, 幸功, 田代, 信, 高橋, 弘充, 信川, 正順, 水野, 恒史, 宇野, 伸一郎, 久保田, あや, 中澤, 知洋, 渡辺, 伸, 飯塚, 亮, 佐藤, 理江, 林, 克洋, 米山, 友景, 吉田, 鉄生, 金丸, 善朗, 小川, 翔司, BALUTA, Chris, 海老沢, 研, 江口, 智士, 勝田, 哲, 北口, 貴雄, 太田, 直美, 志達, めぐみ, 谷本, 敦, 寺島, 雄一, 坪井, 陽子, 内田, 和海, 内田, 悠介, 内山, 秀樹, 山田, 智史, 山内, 茂雄, HOLLAND, Matt, LOEWENSTEIN, Michael, MILLER, Eric, YAQOOB, Tahir
    2023年度 宇宙科学情報解析シンポジウム, Feb, 2024  
  • Odaka H., Ishiwata K., Inoue Y., Kawamura H., Shirahama K., Takashima S., Tatsumi R., Hakamata T., Matsushita T., Yoshimoto M., Aoyama K., Arai S., Ishikawa K., Utsumi Y., Shimizu T., Tanaka M., Taniguchi H., Nakajima R., Hijikata U., Yano Y., Yorita K., Arai S., Ichihashi M., Iwata T., Kato T., Hagino K., Bamba A., Ichinohe Y., Uchida Y., Okuma K., Nakazawa K., Khangulyan D., Suda Yuusuke, Takahashi H., Fukazawa Y., Tamba T., Watanabe S., Shiraishi T., Tsuji N., Hiroshima N., Yawata K., Yoneda H., Aramaki T., Karagiorgi G., Mukherjee R., GRAMS Collaboration
    Meeting Abstracts of the Physical Society of Japan, 79.1 554-554, 2024  
  • Kuramoto Haruki, Malmborg Filip af, Awaki Hisamitsu, Bose Richard, Braun Dana, Chun Sohee, Geronimo Gianluigi de, Enoto Teruaki, Errando Manel, Fukazawa Yasushi, Furusawa Akihiro, Gadson Thomas, Gau Epharaim, Guarino Victor, Gunji Shuuichi, Hakamata Tomohiro, Hayashi Takayuki, Harmon Keon, Heatwole Scott, Hossen Arman, Hu Kun, Imamura Ryuta, Imasawa Ryou, Ishi Daiki, Ishibashi Kazunori, Ishida Manabu, Iyer Nirmal Kumar, Kamogawa Wataru, Kislat Fabian, Kiss Mozsi, Kitaguchi Takao, Klepper Kassi, Krawczynski Henric, Lanzi James, Lisalda Lindsey, Maeda Yoshitomo, Matake Hiroto, Matsumoto Hironori, Matsumoto Gakuto, Miyamoto Asca, Miyazawa Takuya, Mizuno Tsunefumi, Murakami Kaito, Okajima Takashi, Pearce Mark, Peterson Zachary, Mojaver Mehrnossh Rahbardar, Rauch Brian, Cavero Nicole Rodriguez, Ryde Felix, Saito Yoshitaka, Sakamoto Natsuki, Shima Kohei, Shirahama Kentaro, Simburger Garry, Spooner Sean, Stana Theodor-Adrian, Stuchlik David, Takeo Mai, Tamagawa Toru, Tamura Keisuke, Tanaka Kojiro, Tsunemi Hiroshi, Uchida Nagomi, Uchida Yusuke, West Andrew, Wulf Eric, Yoshimoto Marina, XL-Calibur team
    Meeting Abstracts of the Physical Society of Japan, 79.2 711-711, 2024  
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Presentations

 104

Professional Memberships

 3

Research Projects

 3
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