- 著者
- Tamagawa Toru Hayato Asami Nakamura Satoshi TERADA Yukikatsu BAMBA Aya HIRAGA Junko S. HUGHES John P. HWANG Una KATAOKA Jun KINUGASA Kenzo KUNIEDA Hideyo TANAKA Takaaki TSUNEMI Hiroshi UENO Masaru HOLT Stephen S. KOKUBUN Motohide MIYATA Emi SZYMKOWIAK Andrew TAKAHASHI Tadayuki TAMURA Keisuke UENO Daisuke MAKISHIMA Kazuo
- 出版者
- 社団法人日本天文学会
- 雑誌
- PASJ : publications of the Astronomical Society of Japan (ISSN:00046264)
- 巻号頁・発行日
- vol.61, no.1, pp.S167-S174, 2009-01-30
Tycho's supernova remnant was observed by the XIS and HXD instruments onboard the Suzaku satellite on 2006 June 26-29 for 92 ks. The spectrum up to 30 keV was well fitted with a two-component model, consisting of a power-law with photon index of 2.7 and a thermal bremsstrahlung model with temperature of 4.7 keV. The former component can alternatively be modeled as synchrotron emission from a population of relativistic electrons with an estimated roll-off energy of around 1 keV. In the XIS spectra, in addition to the prominent Fe K_alpha line (6.445 keV), we observe for the first time significant K_alpha line emission from the trace species Cr and Mn at energies of 5.48 keV and 5.95 keV, respectively. Faint K_beta lines from Ca (4.56 keV) and Fe (7.11 keV) are also seen. The ionization states of Cr and Mn, based on their line centroids, are estimated to be similar to that of Fe K_alpha (Fe XV or XVI).
- 著者
- Maeda Yoshitomo Ebara Masatoshi Fujimoto Ryuichi HAYASHI Takayuki INOUE Hirohiko ISHISAKI Yoshitaka MORI Hideyuki OKADA Shunsaku SUZUKI Kensuke UCHIYAMA Yasunobu SERLEMITSOS Peter J. SOONG Yang CHAN Kai-Wing OKAJIMA Takashi LEHAN John P. ITOH Kei ITOH Akiharu YOKOYAMA Yushi ITOH Yumi NAKAMURA Ryoko ISHIDA Manabu HAYAKAWA Akira INOUE Chiaki OKUMA Satoshi KUBOTA Ren SUZUKI Masaki OSAWA Takeyuki YAMASHITA Koujun KUNIEDA Hideyo TAWARA Yuzuru OGASAKA Yasushi FURUZAWA Akihiro TAMURA Keisuke SHIBATA Ryo HABA Yoshito NAITOU Masataka MISAKI Kazutami IIZUKA Ryo
- 出版者
- 一般社団法人日本物理学会
- 雑誌
- Progress of theoretical physics. Supplement (ISSN:03759687)
- 巻号頁・発行日
- no.169, pp.322-325, 2007-12-19
We present the in-flight performance of the X-ray telescopes (XRTs) onboard Suzaku. The imaging capability is significantly improved over the ASCA XRT, which had half-power diameters of 3'.6, to 1'.8-2'.3 for all four XRT-I modules. Contemporaneous fits of a power law to all the XIS spectra of the Crab Nebula taken at the two standard observing positions (XIS/HXD-default positions) gives a flux consistent with that obtained by Toor & Seward (1974) to within〜2%. The pre-collimator on the top of each XRT module successfully reduces the intensity of the stray light from the 20' and 50'-off directions down to the level of pre-flight expectations. We also present the thermal wobbling of the satellite. The wobbling causes the alignment error between the XRT-XIS system and the attitude and orbit control system. The wobbling of the alignment is as large as〜1arcmin. In the currently processed data, the absolute coordinate also has systematic uncertainty of up to〜1arcmin.