2000 Fiscal Year Annual Research Report

パルサーからのX線・ガンマ線放射機構の研究

Research Project

Project/Area Number	12640229
Research Institution	Yamagata University
Principal Investigator	柴田晋平山形大学, 理学部, 助教授 (90187401)
Co-Investigator(Kenkyū-buntansha)	河合誠之理化学研究所, 副主任研究員 (80195031) 柴崎徳明立教大学, 理学部, 教授 (50206124) 高原文郎大阪大学, 大学院・理学研究科, 教授 (20154891) 鳥居研一宇宙開発事業団, 宇宙開発特別研究員
Keywords	パルサー / 中性子星 / X線 / ガンマ線 / 粒子加速 / 電場 / パルス / 電子陽電子対
Research Abstract	x線におけるパルサーの観測を推進した。(1)電波パルサーPSR J0631+1036からx線パルスを始めて検出、(2)ミリ秒パルサーPSR J0218+4232からは強いX線パルスを検出、(3)PSR B1937+21からはx線放射の検出、(4)PSR J1744-1134については上限値を与えた。これらは理論的に予想されるパルサー磁気圏での粒子加速を裏付けるだけでなく加速機構にも強い制限を加えるものである。(5)PSR 1937+21については電波のインターパルスに同期してx線がでていることを突き止めた。これは、いわゆるアウターギャップ加速機構を支持する結果となった。加速理論に於いては、電子陽電子対が生成する中でどのようにして電場が維持されるかについて理論研究を推進した。アウターギャップモデルには、電場と電子陽電子対プラズマが共存する系がつくられることを示し、ポーラーキャプモデルについては電子陽電子対プラズマによって電場のスクリーンが効かないため従来のような加速モデルがなりたたないことを示した。アウターギャップモデルでは理論的なx線とガンマ線の光度およびスペクトルの数値予測を行なった。陽子、電子、陽電子からなる多成分系の相対論的流体力学の基礎について考察するとともに、パルサー星雲の形成過程や物理的諸過程について電波銀河ローブとの比較検討を行った。中性子星内部構造との関連においては、中性子星内部に存在する超流体渦糸の性質と振る舞いについて研究を行った。関連天体として、SS433にみられるジェットの構造と放射、ガンマ線バーストの残光現象についてジェットモデルの観点から研究も行った。

Research Products

(25 results)

All Other

All Publications (25 results)

[Publications] Shibata S.,Kawai N.,Tamura K: "Diagnostics of the super-relativistic wind by broadband energy spectrum of the wind powered nebulae"Adv.Space Res.. 25. 673-676 (2000)
[Publications] Luo Q,Shibata S.,Melrose D.: "High-energy emission from millisecond pulsars : Polar cap models"Monthly Notices of Royal Astronomomical Society. 318. 943-951 (2000)
[Publications] Mineo T.,Cusumano G.,Kuiper L.,Hermsen W.,Massaro E.,Becker W.,Nicastro L.,Sacco B.,Verbunt F.,Lyne,A.G.,Stairs I.H.,Shibata,S.: "The pulse shape and spectrum of the millisecond pulsar PSR J0218+4232 in the energy band 1-10 keV observed with BeppoSAX"Astronomy and Astrophysics. 355. 1053-1059 (2000)
[Publications] Takahashi M.,Shibata S.,Torii K.Saito Y.,Kawai N.,Hirayama M.,Dotani T.,Gunji S.,Sakurai H.,Stairs I. H.,Manchester R.N.: "Detection of Pulsed X-ray Emission from the Firstest Millisecond Pulsar PSR B1937+21 with ASCA"Astrophysical Journal. (in press). (2001)
[Publications] Shibata S.: "Pulsar Electrodynamics"ASP Conference Series. vol 202. 411-416 (2000)
[Publications] M.Kusunose,F.Takahara and H.Li: "Electron Acceleration and Time Variability of High Energy Emission from Blazars"Astrophysical Journal. 536. 299-307 (2000)
[Publications] T.Takahashi,J.Kataoka,G.Medejski,J.Mattox,C.M.Urry,S.Wagner,F.Aharonian,M.Catanese,L.Chiappeti,P.Coppi,B.Degrange,G.Fossati,H.Kubo,H.Krawczynski,F.Makino,H.Marshall,L.Maraschi,F.Piron,R.Remillard,F.Takahara,M.Tashiro,H.Terasranta and T.Weekes: "Complex Spectral Variability from Intensive Multi-Wavelength Monitoring of Markarian 421 in 1998"Astrophysical Journal Letters. 542. 105-109 (2000)
[Publications] T.N.Kato and F.Takahara: "Application of Random Walk Theory to the First Order Fermi Acceleration in Shock Waves"Monthly Notices of the Royal Astronomical Society. 321. 642-660 (2001)
[Publications] F.Takahara: "Physics of Relativistic Jets in Blazars Proceedings of the Fifth Compton Symposium"AIP Conference Procedings. 510. 405-409 (2000)
[Publications] M.Kusunose,F.Takahara and H.Li: "Time Variability of Emission from Blazars and Electron Acceleration"AIP Conference Procedings. 510. 420-424 (2000)
[Publications] T.Yamasaki,F.Takahara and M.Kusunose: "A Novel Mechanism for the Formation of Electron-Positron Outflow from Hot Accretion Disks"AIP Conference Procedings. 510. 430-434 (2000)
[Publications] F.Takahara and M.Kusunose: "Electron Acceleration and Time Variability of Blazars"AIP Conference Procedings. 55(in press). (2001)
[Publications] F.Takahara,M.Kino and M.Kusunose: "Physical Parameters of TeV Blazars Proceedings of the International Symposium on High Energy Gamma-Ray Astronomy"AIP Conference Procedings. 558(in press). (2001)
[Publications] H.Inoue,N.Shibazaki & R.Hoshi: "Analytical Studies on the Structure and Emission of the SS 433 Jets"Publ.Astron.Soc.Japan. 53. 127-132 (2001)
[Publications] Kotani,T.;Kawai,N.;Nagase,F.;Namiki,M.;Sakano,M.;Takeshima,T.;Ueda,Y.;Yamaoka,K.;Hjellming,R.M. : "ASCA Observations of the Jet Source XTE J1748-288"Astrophysical Journal. 543. L133 (2000)
[Publications] Brinkmann,W.;Kawai,N.: "The jets of SS 433:second order effects"Astronomy and Astrophysics. 363. 640 (2000)
[Publications] Sakano,M.;Torii,K.;Koyama,K.;Maeda,Y.;Yamauchi,S.: "Discovery of a Slow X-Ray Pulsator, AX J1740.1-2847, in the Galactic Center Region"PASJ. 52. 1141 (2000)
[Publications] Yokogawa,J.;Torii,K.;Kohmura,T.;Imanishi,K.;Koyama,K.: "Discovery of 101-s Pulsations from AX J0057.4-7325 in the SMC with ASCA"PASJ. 52. L53 (2000)
[Publications] Torii,K.;Slane,P.O.;Kinugasa,K.;Hashimotodani,K.;Tsunemi,H.: "ASCA Observations of the Crab-Like Supernova Remnant 3C 58"PASJ. 52. 875 (2000)
[Publications] Yokogawa,J.;Torii,K.;Imanishi,K.;Koyama,K.: "Discovery of 172-s Pulsations from a Be/X-Ray Binary Candidate AX J0051.6-7311 in the SMC with ASCA"PASJ. 52. L37 (2000)
[Publications] Vasisht,G.;Gotthelf,E.V.;Torii,K.;Gaensler,B.M.: "Detection of a Compact X-Ray Source in the Supernova Remnant G29.6+0.1 : A Variable Anomalous X-Ray Pulsar? "ApJ. 542. L49 (2000)
[Publications] Gotthelf,E.V.;Vasisht,G.;Boylan-Kolchin,M.;Torii,K.: "A 700 Year-old Pulsar in the Supernova Remnant Kesteven 75"ApJ. 542. L37 (2000)
[Publications] Torii,K.;Kohmura,T.;Yokogawa,J.;Koyama,k.: "AX J0057.4-7325 and SMC X-2"IAUC. 7441. (2000)
[Publications] Torii,K.;Yokogawa,J.;Imanishi,K.;Koyama,K.: "AX J0051.6-7311"IAUC. 7428. (2000)
[Publications] Torii,Ken'ichi;Gotthelf,E.V.;Vasisht,G.;Dotani,T.;Kinugasa,K.: "A Giant Glitch in the Energetic 69 Millisecond X-Ray Pulsar AXS J161730-505505"ApJ. 534. L71 (2000)

2000 Fiscal Year Annual Research Report

パルサーからのX線・ガンマ線放射機構の研究

Principal Investigator

柴田 晋平 山形大学, 理学部, 助教授 (90187401)

Research Products

[Publications] Shibata S.,Kawai N.,Tamura K: "Diagnostics of the super-relativistic wind by broadband energy spectrum of the wind powered nebulae"Adv.Space Res.. 25. 673-676 (2000)

[Publications] Luo Q,Shibata S.,Melrose D.: "High-energy emission from millisecond pulsars : Polar cap models"Monthly Notices of Royal Astronomomical Society. 318. 943-951 (2000)

[Publications] Takahashi M.,Shibata S.,Torii K.Saito Y.,Kawai N.,Hirayama M.,Dotani T.,Gunji S.,Sakurai H.,Stairs I. H.,Manchester R.N.: "Detection of Pulsed X-ray Emission from the Firstest Millisecond Pulsar PSR B1937+21 with ASCA"Astrophysical Journal. (in press). (2001)

[Publications] Shibata S.: "Pulsar Electrodynamics"ASP Conference Series. vol 202. 411-416 (2000)

[Publications] M.Kusunose,F.Takahara and H.Li: "Electron Acceleration and Time Variability of High Energy Emission from Blazars"Astrophysical Journal. 536. 299-307 (2000)

[Publications] T.N.Kato and F.Takahara: "Application of Random Walk Theory to the First Order Fermi Acceleration in Shock Waves"Monthly Notices of the Royal Astronomical Society. 321. 642-660 (2001)

[Publications] F.Takahara: "Physics of Relativistic Jets in Blazars Proceedings of the Fifth Compton Symposium"AIP Conference Procedings. 510. 405-409 (2000)

[Publications] M.Kusunose,F.Takahara and H.Li: "Time Variability of Emission from Blazars and Electron Acceleration"AIP Conference Procedings. 510. 420-424 (2000)

[Publications] T.Yamasaki,F.Takahara and M.Kusunose: "A Novel Mechanism for the Formation of Electron-Positron Outflow from Hot Accretion Disks"AIP Conference Procedings. 510. 430-434 (2000)

[Publications] F.Takahara and M.Kusunose: "Electron Acceleration and Time Variability of Blazars"AIP Conference Procedings. 55(in press). (2001)

[Publications] F.Takahara,M.Kino and M.Kusunose: "Physical Parameters of TeV Blazars Proceedings of the International Symposium on High Energy Gamma-Ray Astronomy"AIP Conference Procedings. 558(in press). (2001)

[Publications] H.Inoue,N.Shibazaki & R.Hoshi: "Analytical Studies on the Structure and Emission of the SS 433 Jets"Publ.Astron.Soc.Japan. 53. 127-132 (2001)

[Publications] Kotani,T.;Kawai,N.;Nagase,F.;Namiki,M.;Sakano,M.;Takeshima,T.;Ueda,Y.;Yamaoka,K.;Hjellming,R.M. : "ASCA Observations of the Jet Source XTE J1748-288"Astrophysical Journal. 543. L133 (2000)

[Publications] Brinkmann,W.;Kawai,N.: "The jets of SS 433:second order effects"Astronomy and Astrophysics. 363. 640 (2000)

[Publications] Sakano,M.;Torii,K.;Koyama,K.;Maeda,Y.;Yamauchi,S.: "Discovery of a Slow X-Ray Pulsator, AX J1740.1-2847, in the Galactic Center Region"PASJ. 52. 1141 (2000)

[Publications] Yokogawa,J.;Torii,K.;Kohmura,T.;Imanishi,K.;Koyama,K.: "Discovery of 101-s Pulsations from AX J0057.4-7325 in the SMC with ASCA"PASJ. 52. L53 (2000)

[Publications] Torii,K.;Slane,P.O.;Kinugasa,K.;Hashimotodani,K.;Tsunemi,H.: "ASCA Observations of the Crab-Like Supernova Remnant 3C 58"PASJ. 52. 875 (2000)

[Publications] Yokogawa,J.;Torii,K.;Imanishi,K.;Koyama,K.: "Discovery of 172-s Pulsations from a Be/X-Ray Binary Candidate AX J0051.6-7311 in the SMC with ASCA"PASJ. 52. L37 (2000)

[Publications] Vasisht,G.;Gotthelf,E.V.;Torii,K.;Gaensler,B.M.: "Detection of a Compact X-Ray Source in the Supernova Remnant G29.6+0.1 : A Variable Anomalous X-Ray Pulsar? "ApJ. 542. L49 (2000)

[Publications] Gotthelf,E.V.;Vasisht,G.;Boylan-Kolchin,M.;Torii,K.: "A 700 Year-old Pulsar in the Supernova Remnant Kesteven 75"ApJ. 542. L37 (2000)

[Publications] Torii,K.;Kohmura,T.;Yokogawa,J.;Koyama,k.: "AX J0057.4-7325 and SMC X-2"IAUC. 7441. (2000)

[Publications] Torii,K.;Yokogawa,J.;Imanishi,K.;Koyama,K.: "AX J0051.6-7311"IAUC. 7428. (2000)

[Publications] Torii,Ken'ichi;Gotthelf,E.V.;Vasisht,G.;Dotani,T.;Kinugasa,K.: "A Giant Glitch in the Energetic 69 Millisecond X-Ray Pulsar AXS J161730-505505"ApJ. 534. L71 (2000)

柴田晋平山形大学, 理学部, 助教授 (90187401)