Revealing Magnetars Based on Studies on Proton Cyclotron Absorption Line in Super-Strong Magnetic Field

• Project/Area Number: 21740207
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Waseda University (2011); The Institute of Physical and Chemical Research (2009-2010)
• Principal Investigator: NAKAGAWA Yujin 早稲田大学, 理工学術院, 助教 (50513454)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2009: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 宇宙物理(実験) / マグネター / 中性子星 / パルサー

Research Abstract

I performed observational studies of higly magnetized neutron stars with～10^<15> G "Magnetars" using Japanese X-ray satellite Suzaku. In order to detect proton cyclotron resonance featrures and directly measure a magnetic field strength, I performed observations and analyses of three magnetars in active phases. Although I did not find any features in X-ray spectra, I discovered hard X-ray components in the X-ray spectra of weak bursts. In addition, I found a possibility that X-ray spectra in active phases are hader than those in quiet phases.

Research Products

• [Journal Article] Long-term spectral and timing properties of the soft gamma-ray repeater SGR 1833-0832 and detection of extended X-ray emission around the radio pulsar PSR B1830-08 (2011)
  • Author(s): Paolo Esposito、Gian Luca Israel, Roberto Turolla, Fabio Mattana、Andrea Tiengo、AAndrea Possenti、Silvia Zane、Nanda Rea、Marta Burgay、Diego Gotz、Sandro Mereghetti、Luigi Stella、Mark Wieringa、John Sarkissian、Teruaki Enoto、Patrizia Romano、Takanori Sakamoto、Yujin E. Nakagawa、Kazuo Makishima、Kazuhiro Nakazawa、Hiroyuki Nishioka、C. Francois-Martin
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 416巻 Pages: 205-215
  • Peer Reviewed
• [Journal Article] Peculiary Narrow SED of GRB 090926B with MAXI and Fermi/GBM (2011)
  • Author(s): Motoko Serino、Atsumasa Yoshida、Nobuyuki Kawai、Yujin E. Nakagawa、Yoshihiro Ueda、Tatehiro Mihara、Satoshi Nakahira、Satoshi Eguchi、Kazuo Hiroi、Masaki Ishikawa、Naoki Isobe、Masashi Kimura、Hiroki Kitayama、Mitsuhiro Kohama、Takanori Matsumura、Masaru Matsuoka、Mikio Morii、Motoki Nakajima、Hitoshi Negoro、Megumi Shidatsu、Tetsuya Sootome、Kousuke Sugimori、Mutsumi Sugizaki、Fumitoshi Suwa、Takahiro Toizumi、Hiroshi Tomida、Yohko Tsuboi、Hiroshi Tsunemi、Shiro Ueno、Ryuichi Usui、Takayuki Yamamoto、Kazutaka Yamaoka、Makoto Yamauchi、Kyohei Yamazaki
  • Journal Title: Publication of the Astronomical Societry of Japan Volume: 63巻
  • Peer Reviewed
• [Journal Article] The Suzaku Discovery of A Hard Power-Law Component in the Spectra of Short Bursts from SGR 0501+4516 (2011)
  • Author(s): Yujin E. Nakagawa、Kazuo Makishima、Enoto Teruaki
  • Journal Title: Publication of the Astronomical Societry of Japan Volume: 63巻
  • Peer Reviewed
• [Journal Article] Suzaku Detection of Hard X-ray Emission in SGR 0501+4516 Short Burst Spectrum (2011)
  • Author(s): Yujin E. Nakagawa、Teruaki Enoto、Kazuo Makishima、Atsumasa Yoshida、Kazutaka Yamaoka、Takanori Sakamoto、Nanda Rea、Kevin Hurley、Suzaku SGR 0501+4516 Team and HETE-2 Team
  • Journal Title: High-Energy Emission from Pulsars and their Systems, Astrophysics and Space Science Proceedings Pages: 323-323
  • Peer Reviewed
• [Journal Article] Wide-band X-ray Studies of Magnetars with Suzaku、igh-Energy Emission from Pulsars and their Systems (2011)
  • Author(s): Enoto Teruaki、Kazuo Makishima、Nanda Rea、Yujin E. Nakagawa、Kazuhiro Nakazawa、Takanori Sakamoto
  • Journal Title: Astrophysics and Space Science Proceedings Pages: 275-275
  • Peer Reviewed
• [Journal Article] Peculiarly Narrow SED of GRB 090926B with MAXI and Fermi/GBM (2011)
  • Author(s): Motoko Serino
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63
  • Peer Reviewed
• [Journal Article] Revisit of Local X-Ray Luminosity Function of Active Galactic Nuclei with the MAXI Extragalactic Survey (2011)
  • Author(s): Yoshihiro Ueda
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63
  • Peer Reviewed
• [Journal Article] MAXI GSC Monitoring of the Crab Nebula and Pulsar during the GeV Gamma-Ray Flare in 2010 September (2011)
  • Author(s): Mikio Morii
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63
  • Peer Reviewed
• [Journal Article] The Suzaku Discovery of A Hard Power-Law Component in the Spectra of Short Bursts from SGR 0501+4516 (2011)
  • Author(s): Yujin E.Nakagawa
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63
  • Peer Reviewed
• [Journal Article] Long-Term Monitoring of the Black Hole Binary GX 339-4 in the High/Soft State during the 2010 Outburst with MAXI/GSC (2011)
  • Author(s): Megumi Shidatu
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 53
  • Peer Reviewed
• [Journal Article] A Large X-Ray Flare from a Single Weak-Lined T Tauri Star TWA-7 Detected with MAXI GSC (2011)
  • Author(s): Akiko Uzawa
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63
  • Peer Reviewed
• [Journal Article] The First MAXI/GSC Catalog in the High Galactic-Latitude Sky (2011)
  • Author(s): Kazuo Hiroi
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63
  • Peer Reviewed
• [Journal Article] Long-term spectral and timing nroperties of the soft gamma-ray repeater SGR 1833-0832 and detection of extended X-ray emission around the radio pulsar PSR B1830-08 (2011)
  • Author(s): Paolo Esposito
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 416 Pages: 205-215
  • DOI: 10.1111/j.1365-2966.2011.19022.x
  • Peer Reviewed
• [Journal Article] All-sky Observations with Suzaku Wide-band All-sky Monitor and MAXI (2010)
  • Author(s): Masanori Ohno、Motohide Kokubun、Tadayuki Takahashi、Kazutaka Yamaoka、Motoko Serino、Yujin E. Nakagawa、Toru Tamagawa、Yasushi Fukazawa、Takeshi Uehara、Yoshitaka Hanabata、Hiromitsu Takahashi、Satoshi Sugita、Nicolas Vasquez、Yukikatsu Terada、Makoto Tashiro、Wataru Iwakiri、Kazuki Takahara、Tetsuya Yasuda、Norisuke Ohmori、Arata Daikyuji、Yuusuke Nishioka、Makoto Yamauchi、Yuji Urata、Patrick Tsai、Kazuhiro Nakazawa、Kazuo Makishima、Soojing Hong
  • Journal Title: The First Year of MAXI : Monitoring Variable X-ray Sources
  • URL: http://maxi.riken.jp/FirstYear
• [Journal Article] Discovery of MeV emission from a Magnetar, AXP 1E1547. 0-5408, with Suzaku/Wide-band All-sky Monitor (2010)
  • Author(s): Tetsuya Yasuda、Wataru Iwakiri、Yukikatsu Terada、Makoto S. Tashiro、Teruaki Enoto、Aya Bamba、Shinpei Shibata、Yujin E. Nakagawa、Kazuo Makishima、Suzaku-Wam Team
  • Journal Title: The First Year of MAXI : Monitoring Variable X-ray Sources
  • URL: http://maxi.riken.jp/FirstYear
• [Journal Article] The First MAXI/GSC View of Galactic Magnetars (2010)
  • Author(s): Yujin E. Nakagawa、Tatehiro Mihara、Mutsumi Sugzaki、Mitsuhiro Kohama、Takayuki Yamamoto、Motoko Suzuki、Masaru Matsuoka、Nobuyuki Kawai、Mikio Morii、Ryuichi Usui、Kohsuke Sugimori、Satoshi Nakahira、Hitoshi Negoro、Motoki Nakajima、Naoki Isobe、Maxi Team
  • Journal Title: The First Year of MAXI : Monitoring Variable X-ray Sources
  • URL: http://maxi.riken.jp/FirstYear
• [Journal Article] Timing Analysis of Unusual GRB 090709A Observed by Suzaku Wide-band All sky Monitor (2010)
  • Author(s): Wataru Iwakiri、Masanori Ohno、Tune Kamae、Yujin E. Nakagawa、Yukikatsu Terada、Makoto S. Tashiro、Atsumasa Yoshida、Kazutaka Yamaoka、Kazuo Makishima
  • Journal Title: DECIPHERING THE ANCIENT UNIVERSE WITH GAMMA-RAY BURSTS, AIP Conference Proceedings Volume: 1279巻 Pages: 89-92
• [Journal Article] MAXI Nova Alert System and the Latest Scientific Results (2010)
  • Author(s): Hitoshi Negoro、Sho Miyoshi、Hiroshi Ozawa、Ryoji Ishiwata、Motoki Nakajima、Masaru Matsuoka、Kazuyoshi Kawasaki、Shiro Ueno、Hiroshi Tomida、Motoko Suzuki、Masaki Ishikawa、Tatehiro Mihara、Mitsuhiro Kohama、Mutsumi Sugizaki、Yujin Nakagawa、Hiroshi Tsunemi、Nobuyuki Kawai、Mikio Morii、Atsumasa Yoshida、Kazutaka Yamaoka、Yoshihiro Ueda、Naoki Isobe、Satoshi Eguchi
  • Journal Title: X-RAY ASTRONOMY 2009, AIP Conference Proceedings Volume: 1248巻 Pages: 589-590
• [Journal Article] The First Light from MAXI onboard JEM(Kibo)-EF on ISS (2010)
  • Author(s): Masaru Matsuoka、Motoko Suzuki、Kazuyoshi Kawasaki、Shiro Ueno、Hiroshi Tomida、Yasuki Adachi、Masaki Ishikawa、Yasuhara Itamoto、Daiki Takahashi、Haruyoshi Katayama、Ken Ebisawa、Tatehiro Mihara、Mitsuhiro Kohama、Mutsumi Sugizaki、Yujin Nakagawa、Takayuki Yamamoto、Hiroshi Tsunemi、Masahi Kimura、Nobuyuki Kawai、Mikio Morii、Kohsuke Sugimori、Atsumasa Yoshida、Kazutaka Yamaoka、Satoshi Nakahira、Ichiro Takahashi、Hitoshi Negoro、Motoki Nakajima、Ryoji Ishiwata、Sho Miyoshi、Hiroshi Ozawa、Yoshithiro Ueda、Naoki Isobe、Satoshi Eguchi、Kazuo Hiroi、Makoto Yamauchi、Arata Yamauchi、Arata Daikyuji
  • Journal Title: X-RAY ASTRONOMY 2009, AIP Conference Proceedings Volume: 1248巻 Pages: 531-536
• [Journal Article] Uniting Burst and Quiescent Emission Mechanisms of Magnetars (2010)
  • Author(s): Yujin E. Nakagawa、Atsumasa Yoshida、Kevin Hurley、Kazutaka Yamaoka、Noriaki Shibazaki、Teruaki Enoto、Takanori Sakamoto、Kazuo Makishima、HETE-2 Team、Suzaku SGR/AXP ToO Team
  • Journal Title: Proceedings of The Energetic Cosmos : from Suzaku to ASTRO-H Pages: 220-221
  • NAID: 120006828484
  • URL: http://www-utheal.phys.s.u-tokyo.ac.jp/SuzakuConference2009/ProceedingsHTML
• [Journal Article] Suzaku Studies of the Extremely Hard Emission Components of Magnetars (2010)
  • Author(s): Teruaki Enoto、Nanda Rea、Yujin E. Nakagawa、Kazuhiro Nakazawa、Takanori Sakamoto、Kazuo Makishima、the Suzaku Magnetar Team
  • Journal Title: Proceedings of The Energetic Cosmos : from Suzaku to ASTRO-H Pages: 186-189
  • NAID: 120006828468
  • URL: http://www-utheal.phys.s.u-tokyo.ac.jp/SuzakuConference2009/ProceedingsHTML
• [Journal Article] The MAXI Experiment-Monitor of All-sky X-ray Image installed on the International Space Station- (2010)
  • Author(s): Shiro Ueno、Masaru Matsuoka、Kazuyoshi Kawasaki、Hiroshi Tomida、Mitsuhiro Kohama、Motoko Suzuki、Masaki Ishikawa、Yasuki Adachi、Tatehiro Mihara、Mutsumi Sugizaki、Yujin E. Nakagawa、Takayuki Yamamoto、Hiroshi Tsunemi、Masashi Kimura、Nobuyuki Kawai、Mikio Morii、Kousuke Sugimori、Atsumasa Yoshid、Kazutaka Yamaoka、Satoshi Nakahira、Hitoshi Negoro、Ryoji Ishiwata、Sho Miyoshi、Motoki Nakajima、Yoshihiro Ueda、Naoki Isobe、Satoshi Eguchi、Kazuo Hiroi、Haruyoshi Katayama、Ken Ebisawa
  • Journal Title: Proceedings of The Energetic Cosmos : from Suzaku to ASTRO-H Pages: 400-403
  • NAID: 120006828557
  • URL: http://www-utheal.phys.s.u-tokyo.ac.jp/SuzakuConference2009/ProceedingsHTML
• [Journal Article] Early results of MAXI(Monitor of All-sky X-ray Image) on ISS (2010)
  • Author(s): Masaru Matsuoka、Tatehiro Mihara、Shu Miyoshi、Mutsumi Sugizaki、Motoko Suzuki、Yujin E. Nakagawa、Takayuki Yamamoto、Tetsuya Sootome、Kazuyoshi Kawasaki、Shiro Ueno、Hiroshi Tomida、Mitsuhiro Kohama、Masaki Ishikawa、Yasuki Adachi、Yasuhara Itamoto、Yoko Kobayashi、Haruyoshi Katayama、Nobuyuki Kawai、Mikio Morii、Kousuke Sugimori、Hiroshi Tsunemi、Masashi Kimura、Atsumasa Yoshida、Kazutaka Yamaoka、Satoshi Nakahira、Hitoshi Negoro、Hiroshi Ozawa、Fumitoshi Suwa、Motoki Nakajima、Yoshihiro Ueda、Naoki Isobe、Satoshi Eguchi、Kazuo Hiroi、Ken Ebisawa、Arata Daikyuji、Makoto Yamauchi、Akiko Uzawa、Takanori Matsumura、Kyohei Yamazaki、Yohko Tsuboi
  • Journal Title: Space Telescopes and Instrumentation 2010 : Ultraviolet to Gamma Ray. Proceedings of the SPIE Volume: 7732巻
  • Peer Reviewed
• [Journal Article] Prompt MeV Emission from GRB 070125 Observed by Suzaku/WAM (2010)
  • Author(s): Kaori Onda、Makoto S. Tashiro、Yujin E. Nakagawa、Kazutaka Yamaoka、Yukikatsu Terada、Masanori Ohno、Satoshi Sugita、Takanori Sakamoto、Kenji Toma、Poshak Gandhi、Natsuki Kodaka、Wataru Iwakiri、Yuji Urata、Makoto Yamauchi、Yasushi Fukazawa
  • Journal Title: Publication of the Astronomical Societry of Japan Volume: 62巻 Pages: 547-556
  • Peer Reviewed
• [Journal Article] Wide-band Suzaku Analysis of the Persistent Emission from SGR 0501+4516 During the 2008 Outburst (2010)
  • Author(s): Teruaki Enoto、Nanda Rea、Yujin E. Nakagawa、Kazuo Makishima、Takanori Sakamoto、Paolo Esposito、Diego Gotz、Kevin Hurley、Gean Luca Israel、Motohide Kokubun、Sandro Mereghetti、Hiroshi Murakami、Kazuhiro Nakazawa、Luigi Stella、Andrea Tiengo、Roberto Turolla、Shin' ya Yamada、Kazutaka Yamaoka、Atsumasa Yoshida、Silvia Zane
  • Journal Title: The Astrophysical Journal Volume: 715巻 Pages: 665-670
  • Peer Reviewed
• [Journal Article] Spectral-Lag Relations in GRB Pulses Detected with HETE-2 (2010)
  • Author(s): Makoto Arimoto、Nobuyuki Kawai、Katsuaki Asano、Kevin Hurley、Motoko Suzuki、Yujin E. Nakagawa、Takashi Shimokawabe、Nicolas Vasquez Pazmino、Rie Sato、Masaru Matsuoka、Atsumasa Yoshida、Toru Tamagawa、Yuji Shirasaki、Satoshi Sugita、Ichiro Takahashi、Jean-Luc Atteia、Alexandre Pelangeon、Roland Vanderspek、Carlo Graziani、Gregory Prigozhin、Joel Villasenor、J. Garrett Jernigan、Geoffrey B. Crew、Takanori Sakamoto、George R. Ricker、Stanford E. Woosley、Nat Butler、Alan Levin、John P. Doty、Timothy Q. Donaghy、Donald Q. Lamb、Edward Fenimore、Mark Galasshi、Michel Boer、Jean-Pascal Dezalay、Jean-Francois Olive、Joao Braga、Ravi Manchanda、Graziella Pizzichini
  • Journal Title: Publication of the Astronomical Society of Japan Volume: 62巻 Pages: 487-499
  • Peer Reviewed
• [Journal Article] Suzaku Discovery of a Hard X-Ray Tail in the Persistent Spectra from the Magnetar 1E 1547. 0-5408 during its 2009 Activity (2010)
  • Author(s): Teruaki Enoto、Kazuhiro Nakazawa、Kazuo Makishima、Yujin E. Nakagawa、Takanori Sakamoto、Masanori Ohno、Tadayuki Takahashi、Yukikatsu Terada、Kazutaka Yamaoka、Toshio Murakami、Hiromitsu Takahashi
  • Journal Title: Publication of the Astronomical Society of Japan Volume: 62巻 Pages: 475-485
  • Peer Reviewed
• [Journal Article] A new analysis of the short-duration, hard-spectrum GRB 051103, a possible extragalactic soft gamma repeater giant flare (2010)
  • Author(s): Kevin Hurley、Antonia Rowlinson、Eric Bellm、Daniel Perley、Igor Mitrofanov、Dmitry Golovin、S. Alexander Kozyrev、Maxim Litvak、Anton Sanin、William Boynton、Charles Fellows、Karl Harshman、Masanori Ohno、Kazutaka Yamaoka、Yujin E. Nakagawa、David Smith、Thomas Cline、Nial R. Tanvir、Paul T. O' Brien、Klaas Wiersema、Evert Rol、Andrew Levan、James Rhoads、Andrew Fruchter、David Bersier、John J. Kavelarrs、Niel Gehrels、Hans Krimm、David M. Palmer、Robert C. Duncan、Claudia Wigger、Wojtek Hajdas、Jean-Luc Atteia、George Ricker、Roland Vanderspe、Arne Rau、Andreas von Kienlin
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 403巻 Pages: 342-352
  • Peer Reviewed
• [Journal Article] Bright X-ray flares from the BL Lac object Mrk 421, detected with MAXI in 2010 January and February (2010)
  • Author(s): Naoki Isobe
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 62
  • Peer Reviewed
• [Journal Article] MAXI GSC Observations of a Spectral State Transition in the Black Hole Candidate XTE J1752-223 (2010)
  • Author(s): Satoshi Nakahira
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 62
  • Peer Reviewed
• [Journal Article] Prompt MeV Emission from GRB070125 Observed by Suzaku/WAM (2010)
  • Author(s): Kaori Onda
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 62 Pages: 547-556
  • Peer Reviewed
• [Journal Article] Suzaku Discovery of a Hard X-Ray Tail in the Persistent Spectra from the Magnetar 1E 1547.0-5408 during its 2009 Activity (2010)
  • Author(s): Teruaki Enoto
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 62 Pages: 475-485
  • Peer Reviewed
• [Journal Article] Wide-band Suzaku Analysis of the Persistent Emission from SGR 0501+4516 During the 2008 Outburst (2010)
  • Author(s): Teruaki Enoto
  • Journal Title: The Astrophysical Journal Volume: 715 Pages: 665-670
  • Peer Reviewed
• [Journal Article] The MAXI Mission on the ISS : Science and Instruments for Monitoring All-Sky X-Ray Images (2009)
  • Author(s): Masaru Matsuoka、Kazuyoshi Kawasaki、Shiro Ueno、Hiroshi Tomida、Mitsuhiro Kohama、Motoko Suzuki、Yasuki Adachi、Masaki Ishikawa、Tatehiro Mihara、Mutsumi Sugizaki、Naoki Isobe、Yujin E. Nakagawa、Hiroshi Tsunemi、Emi Miyata、Nobuyuki Kawai、Jun Kataoka、Mikio Morii、Atsumasa Yoshida、Hitoshi Negoro、Motoki Nakajima、Yoshihiro Ueda、Hirotaka Chujo、Kazutaka Yamaoka、Osamu Yamazaki、Satoshi Nakahira、Tetsuya You、Ryoji Ishiwata、Sho Miyoshi、Satoshi Eguchi、Kazuo Hiroi、Haruyoshi Katayama、Ken Ebisawa
  • Journal Title: Publication of the Astronomical Society of Japan Volume: 61巻 Pages: 999-1010
  • NAID: 10025601412
  • Peer Reviewed
• [Journal Article] Suzaku-WAM, Konus-Wind and Swift-BAT Observations of The Prompt Emission of The Highest Redshift GRB (2009)
  • Author(s): Satoshi Sugita、Kazutaka Yamaoka、Masanori Ohno、Makoto S. Tashiro、Yujin E. Nakagawa、Yuji Urata、Valentin Pal' Shin、Sergei Golenetskii、Takanori Sakamoto、Jay Cummings、Hans Krimm、Michael Stamatikos、Ann Parsons、Scott Barthelmy、Neil Gehrels
  • Journal Title: Publication of the Astronomical Society of Japan Volume: 61巻 Pages: 521-527
  • Peer Reviewed
• [Journal Article] Time-evolution of peak energy and luminosity relation within pulses of GRB 061007 : probing fireball dynamics (2009)
  • Author(s): Masanori Ohno
  • Journal Title: Publications of the Astronomical Society of Japan 61 Pages: 201-211
  • Peer Reviewed
• [Journal Article] Suzaku-WAM, Konus-Wind and Swift-BAT observations of the prompt emission of the high redshift GRB 050904 (2009)
  • Author(s): Satoshi Sugita
  • Journal Title: Publications of the Astronomical Society of Japan 61 Pages: 521-527
  • Peer Reviewed
• [Journal Article] The MAXI Mission on the ISS : Science and Instruments for Monitoring All-Sky X-ray Images (2009)
  • Author(s): Masaru Matsuoka
  • Journal Title: Publications of the Astronomical Society of Japan 61 Pages: 999-1010
  • Peer Reviewed
• [Presentation] 「すざく」衛星・HETE-2衛星によるマグネターのバースト/定常放射のX線スペクトルの研究 (2012)
  • Author(s): 中川友進
  • Organizer: 日本天文学会2012年春季年会
  • Place of Presentation: 京都
  • Year and Date: 2012-03-21
• [Presentation] Wide-Band Spectra of Magnetar Burst Emission (2012)
  • Author(s): Yujin E. Nakagawa
  • Organizer: Positrons in Astrophysics
  • Place of Presentation: Murren, Switzerland
  • Year and Date: 2012-03-20
• [Presentation] Wide-Band Spectra of Magnetar Persistent and Burst Emission (2012)
  • Author(s): Yujin E.Nakagawa
  • Organizer: Positrons in Astrophysics
  • Place of Presentation: ミューレン(スイス)
  • Year and Date: 2012-03-20
• [Presentation] 「すぎく」衛星・HETE-2衛星によるマグネターのバースト/定常放射のX線スペクトルの研究 (2012)
  • Author(s): 中川友進
  • Organizer: 日本天文学会2012年春季年会
  • Place of Presentation: 龍谷大学(京都府)
  • Year and Date: 2012-03-19
• [Presentation] Wide-Band Spectra of Magnetar Burst Emission (2012)
  • Author(s): Yujin E. Nakagawa
  • Organizer: IAU Symposium 279
  • Place of Presentation: 栃木
  • Year and Date: 2012-03-12
• [Presentation] Wide-Band Spectra of Magnetar Burst Emission (2012)
  • Author(s): Yujin E.Nakagawa
  • Organizer: IAU Symposium 279, Death of Massive Stars : Supernovae & Gamma-Ray Bursts
  • Place of Presentation: 日光千姫物語(栃木県)
  • Year and Date: 2012-03-12
• [Presentation] マグネターのバースト/定常放射のスペクトルの研究 (2011)
  • Author(s): 中川友進
  • Organizer: 日本天文学会2011年秋季年会
  • Place of Presentation: 鹿児島
  • Year and Date: 2011-09-20
• [Presentation] マグネターのバースト/定常放射のスペクトルの研究 (2011)
  • Author(s): 中川友進
  • Organizer: 日本天文学会2011年秋季年会
  • Place of Presentation: 鹿児島大学(鹿児島県)
  • Year and Date: 2011-09-19
• [Presentation] マグネターのX線・γ線による観測的研究 (2011)
  • Author(s): 中川友進
  • Organizer: コンパクト天体で探る極限物理
  • Place of Presentation: 京都
  • Year and Date: 2011-03-18
• [Presentation] 全天X線監視装置MAXIによるマグネターの観測 (2011)
  • Author(s): 中川友進
  • Organizer: 日本天文学会2011年春季年会
  • Place of Presentation: 茨城
  • Year and Date: 2011-03-01
• [Presentation] マグネターのX線・γ線による観測的研究 (2011)
  • Author(s): 中川友進
  • Place of Presentation: 東京
  • Year and Date: 2011-03-01
• [Presentation] マグネターのX線・γ線による観測的研究 (2011)
  • Author(s): 中川友進
  • Organizer: コンパクト天体で探る極限物理
  • Place of Presentation: 京都大学(京都)
  • Year and Date: 2011-02-18
• [Presentation] The First MAXI/GSC View of Galactic Magnetars (2010)
  • Author(s): Yujin E.Nakagawa
  • Organizer: 4th International MAXI Workshop
  • Place of Presentation: 青山学院大学(東京都)
  • Year and Date: 2010-11-30
• [Presentation] Wide-Band Spectra of Magnetar Emission (2010)
  • Author(s): Yujin E. Nakagawa
  • Organizer: 8th INTEGRAL Workshop "The Restless Gamma-Ray Universe"
  • Place of Presentation: Dublin, Ireland
  • Year and Date: 2010-09-29
• [Presentation] Wide-Band Spectra of Magnetar Emission (2010)
  • Author(s): Yujin E.Nakagawa
  • Organizer: 8th INTEGRAL Workshop-The Restless Gamma-Ray Universe
  • Place of Presentation: Dublin Castle (Dublin)
  • Year and Date: 2010-09-29
• [Presentation] マグネターのバースト/X線定常放射の広帯域スペクトルの研究 (2010)
  • Author(s): 中川友進
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 石川
  • Year and Date: 2010-09-24
• [Presentation] マグネターのバースト/X線定常放射の広帯域スペクトルの研究 (2010)
  • Author(s): 中川友進
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 金沢大学(石川)
  • Year and Date: 2010-09-24
• [Presentation] The First Results of Monitoring Galactic Magnetar Activities with MAXI/GSC (2010)
  • Author(s): Yujin E. Nakagawa
  • Organizer: COSPAR 2010
  • Place of Presentation: Bremen, Germany
  • Year and Date: 2010-07-24
• [Presentation] The First Results of Monitoring Galactic Magnetar Activities with MAXI/GSC (2010)
  • Author(s): Yujin E.Nakagawa
  • Organizer: COSPAR 2010
  • Place of Presentation: Fair and Congress Center Bremen (Bremen)
  • Year and Date: 2010-07-24
• [Presentation] Suzaku Observations of Long-Duration GRB 090709A X-ray Afterglow (2010)
  • Author(s): Yujin E. Nakagawa
  • Organizer: The GRB Conference in Kyoto 2010
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 2010-04-19
• [Presentation] Suzaku Observations of Long-Duration GRB 090709A X-ray Afterglow (2010)
  • Author(s): Yujin E.Nakagawa
  • Organizer: The GRB Conference in Kyoto 2010
  • Place of Presentation: Kyoto TERRSA (Kyoto)
  • Year and Date: 2010-04-19
• [Presentation] Suzaku Detection of Hard X-ray Emission in SGR 0501+4516 Short Burst Spectrum (2010)
  • Author(s): Yujin E. Nakagawa
  • Organizer: ICREA Workshop on The High-Energy Emission from Pulsars and their Systems
  • Place of Presentation: Barcelona, Spain
  • Year and Date: 2010-04-14
• [Presentation] Suzaku Detection of Hard X-ray Emission in SGR 0501+4516 Short Burst Spectrum (2010)
  • Author(s): Yujin E.Nakagawa
  • Organizer: ICREA Workshop on The High-Energy Emission from Pulsars and their Systems
  • Place of Presentation: Sant Cugat Forum (Barcelona)
  • Year and Date: 2010-04-14
• [Presentation] 「すざく」衛星によるSGR 0501+4516のバーストに付随する硬X線放射の検出 (2010)
  • Author(s): 中川友進
  • Organizer: 日本天文学会2010年春季年会
  • Place of Presentation: 広島
  • Year and Date: 2010-03-26
• [Presentation] 「すざく」衛星によるSGR 0501+4516のバーストに付随する硬x線放射の検出 (2010)
  • Author(s): 中川友進
  • Organizer: 日本天文学会2010年春季大会
  • Place of Presentation: 広島県東広島市
  • Year and Date: 2010-03-26
• [Presentation] 全天X線監視装置MAXIによるマグネターの初期観測 (2010)
  • Author(s): 中川友進
  • Organizer: 日本物理学会2010年第65回年次大会
  • Place of Presentation: 岡山
  • Year and Date: 2010-03-21
• [Presentation] 全天X線監視装置MAXIによるマグネターの初期観測 (2010)
  • Author(s): 中川友進
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山県岡山市
  • Year and Date: 2010-03-21
• [Presentation] すざく衛星によるマグネター研究の最新成果(2) (2010)
  • Author(s): 中川友進
  • Organizer: 第10回宇宙科学シンポジウム
  • Place of Presentation: 神奈川
  • Year and Date: 2010-01-07
• [Presentation] Suzaku による準周期的プロンプト放射を示したGRB 090709AのX線残光観測 (2009)
  • Author(s): 中川友進
  • Organizer: 科研費特定領域研究「ガンマ線バーストで読み解く太古の宇宙」第三回領域シンポジウム
  • Place of Presentation: 岐阜県下呂市
  • Year and Date: 2009-09-25
• [Presentation] Suzakuによる準周期的プロンプト放射を示したGRB090709AのX線残光観測 (2009)
  • Author(s): 中川友進
  • Organizer: ガンマ線バーストで読み解く太古の宇宙・第三回領域シンポジウム
  • Place of Presentation: 岐阜
  • Year and Date: 2009-09-24
• [Presentation] Suzaku Observations of Short Bursts from SGR0501+4516 (2009)
  • Author(s): Yujin E. Nakagawa
  • Organizer: The Shocking Universe-Gamma Ray Bursts and High Energy Shock phenomena in the Universe
  • Place of Presentation: Venice, Italy
  • Year and Date: 2009-09-18
• [Presentation] Suzaku Observations of Short Bursts from SGR 0501+4516 (2009)
  • Author(s): 中川友進
  • Organizer: The Shocking Universe
  • Place of Presentation: Venice, Italy
  • Year and Date: 2009-09-18
• [Presentation] 「すざく」衛星による超強磁場中性子星SGR 0501+4516の小バーストの観測 (2009)
  • Author(s): 中川友進
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 兵庫
  • Year and Date: 2009-09-10
• [Presentation] 「すざく」衛星による超強磁場中性子性SGR 0501+4516の小バーストの観測 (2009)
  • Author(s): 中川友進
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 兵庫県神戸市
  • Year and Date: 2009-09-10
• [Presentation] Uniting Burst and Quiescent Emission Mechanisms of Magnetars (2009)
  • Author(s): Yujin E. Nakagawa
  • Organizer: The Energetic Cosmos : from Suzaku to ASTRO-H
  • Place of Presentation: 北海道
  • Year and Date: 2009-06-29