Investigation of X-ray Objects with Astro-D and ROSAT

使用 Astro-D 和 ROSAT 研究 X 射线物体

• 批准号: 06044225
• 负责人: INOUE Hajime
• 金额: $ 4.61万
• 依托单位: The Institure of Space and Astronautical Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06044225/
• 关键词: X-ray astronomy; scientific satellite; X-ray spectroscopy; cosmic hot plasmas; X-ray sources; black holes; evolution of the universe

ASCA (ASTRO-D), the fourth X-ray astonomy satellite of ISAS,Japan, was launched in February, 1993. ASCA is an X-ray astronomy observatory which is, for the first time, capable of performing imaging and spectroscopic observations simultaneously over a wide energy range 0.5-10 keV.Whereas, ROSAT,the X-ray astronomy satellite of the Max-Planck Institute, Germany, was launched in June, 1990. ROSAT is also an X-ray astronomy observatory which is characterized by its excellent imaging capability, although it is limited to narrower energy bands than ASCA.ASCA has much higher spectral capability than ROSAT,while ROSAT has much finer imaging capability and higher source detection sensitivity that ASCA.Both observatories are really complimetary to each other.An extensive collaboration between Japanese and German scientists has been carried out in performing simultaneous observations, cross-calibrations of the X-ray telescopes, exchanging the data, developping analysis software, discussing the sc … More ientific yields, presenting the results to international communities, future development of instruments and so on.The ASCA instruments cover the most important energy band for plasma diagnostics, because all the K-lines and the K-absorption edges from oxygen through iron at various ionization stages lie within this band. The CCD camera of ASCA can resolve all major lines individually. Motion of plasma of the order or greater than 1000 km/s can be measured significantly from Doppler shift of the line energies. These capabilities of ASCA allow diagnostics of accreting matter around such compact objeots as neutron stars and black holes. On the other hand, the ROSAT telescope provides an accurate position of each X-ray sources and enables us to indentify the X-ray sources with optically known sources. The highly resolved spatial information with ROSAT also provides powerful means for the investigations of extended plasmas in supernova remnants, galaxies, and clusters of galaxies. Combining these characteristics of the two observatories, several remarkable scientific results have already been obtained and shown in many scientific papers. This collaborative study should be kept continuing in future. Less

ASCA（ASTRO-D）是日本ISAS的第四颗X射线天文学卫星，于1993年2月发射。ASCA是一个X射线天文观测台，它首次能够在0.5-10千电子伏的宽能量范围内同时进行成像和光谱观测。而德国马克斯-普朗克研究所的X射线天文卫星ROSAT是1990年6月发射的。ROSAT也是一个X射线天文观测台，其特点是具有出色的成像能力，尽管它限于比ASCA更窄的能带。ASCA的光谱能力比ROSAT高得多，而ROSAT的成像能力和源探测灵敏度都比ASCA高得多，两个天文台确实相互配合，日本和德国科学家进行了广泛的合作，同时观测，X射线望远镜的交叉校准，交换数据，开发分析软件，讨论科学 ...更多信息 ASCA仪器覆盖了等离子体诊断中最重要的能带，因为所有的K线和在不同电离阶段从氧到铁的K吸收边都在这个带内。ASCA的CCD相机可以单独解析所有主要线条。等离子体的运动的数量级或大于1000公里/秒，可以测量显着的线能量的多普勒频移。ASCA的这些能力允许诊断中子星和黑洞等致密物体周围的吸积物质。另一方面，ROSAT望远镜提供了每个X射线源的精确位置，使我们能够识别X射线源与光学已知源。ROSAT的高分辨率空间信息也为研究超新星遗迹、星系和星系团中的扩展等离子体提供了强有力的手段。结合这两个天文台的这些特点，已经取得了一些显着的科学成果，并在许多科学论文中显示。今后应继续开展这种合作研究。少

项目成果

M.Cappi,T.Mihara,M.Matsuoka et al.: "Is the X-ray Spectrum of the Seyfert 2 Galaxy NGC 5252 Intrin-sically Flat?" Astrophys.J.456. 141-151 (1996)

M.Cappi、T.Mihara、M.Matsuoka 等人：“Seyfert 2 星系 NGC 5252 的 X 射线光谱本质上是平坦的吗？”

Y.Ikebe, H.Ezawa, Y.Fukazawa et al.: "Discovery of a Hierarchical Distribution of Dark Matter in the Fornax Cluster of Galaxies" Nature. 379. 427-428 (1996)

Y.Ikebe、H.Ezawa、Y.Fukazawa 等人：“发现天炉座星系团中暗物质的分层分布”自然。

D.J.Macomb, C.W.Akerlof, H.D.Aller et al.: "Multiwavelength Observations of Markarian 421 During A Tev/X-ray Flare" Astrophys.J.Letters. 449. L99-L103 (1996)

D.J.Macomb、C.W.Akerlof、H.D.Aller 等人：“Tev/X 射线耀斑期间 Markarian 421 的多波长观测”Astrophys.J.Letters。

K.Ebisawa, Y.Ueda, H.Inoue, et al.: "ASCA Observations of the Iron Line Structure in Gygnus X-1" Astrophys.J.467. 419-434 (1996)

K.Ebisawa、Y.Ueda、H.Inoue 等人：“ASCA 对 Gygnus X-1 中铁线结构的观察”Astrophys.J.467。

S.W.Allen, A.C.Fabian, Y.Tawara, et al.: "ASCA and ROSAT Observatopms of Distant, Massive Cooling Flows" Mon.Not.Roy.Astron.Soc.283. 263-281 (1996)

S.W.Allen、A.C.Fabian、Y.Tawara 等人：“ASCA 和 ROSAT Observatopms of Distant, Massive Cooling Flows”Mon.Not.Roy.Astron.Soc.283。