Zobrazeno 1 - 10
of 204
pro vyhledávání: '"Hiraga, J."'
Autor:
Nakajima, H., Maeda, Y., Uchida, H., Tanaka, T., Tsunemi, H., Hayashida, K., Tsuru, T. G., Dotani, T., Nagino, R., Inoue, S., Ozaki, M., Tomida, H., Natsukari, C., Ueda, S., Mori, K., Yamauchi, M., Hatsukade, I., Nishioka, Y., Sakata, M., Beppu, T., Honda, D., Nobukawa, M., Hiraga, J. S., Kohmura, T., Murakami, H., Nobukawa, K. K., Bamba, A., Doty, J. P., Iizuka, R., Sato, T., Kurashima, S., Nakaniwa, N., Asai, R., Ishida, M., Mori, H., Soong, Y., Okajima, T., Serlemitsos, P., Tawara, Y., Mitsuishi, I., Ishibashi, K., Tamura, K., Hayashi, T., Furuzawa, A., Sugita, S., Miyazawa, T., Awaki, H., Miller, E. D., Yamaguchi, H.
We describe the in-orbit performance of the soft X-ray imaging system consisting of the Soft X-ray Telescope and the Soft X-ray Imager aboard Hitomi. Verification and calibration of imaging and spectroscopic performance are carried out making the bes
Externí odkaz:
http://arxiv.org/abs/1709.08829
Autor:
Tahara, M., Kataoka, J., Takeuchi, Y., Totani, T., Sofue, Y., Hiraga, J. S., Tsunemi, H., Inoue, Y., Kimura, M., Cheung, C. C., Nakashima, S.
We report on Suzaku observations of large-scale X-ray structures possibly related with the Fermi Bubbles obtained in 2013 with a total duration of ~ 80 ks. The observed regions were the: (i) northern cap (N-cap; l ~ 0 deg, 45 deg < b < 55 deg) seen i
Externí odkaz:
http://arxiv.org/abs/1501.04405
Autor:
Aharonian, F., Uchiyama, Y., Khangulyan, D., Tanaka, T., Chernyakova, M., Fukuyama, T., Hiraga, J.
We discuss the prospects for a progress to be brought by ASTRO-H in the understanding of the physics of particle acceleration in astrophysical environments. Particular emphasis will be put on the synergy with gamma-ray astronomy, in the context of th
Externí odkaz:
http://arxiv.org/abs/1412.1175
Autor:
Long, K. S., Bamba, A., Aharonian, F., Foster, A., Funk, S., Hiraga, J., Hughes, J., Ishida, M., Katsuda, S., Matsumoto, H., Mori, K., Nakajima, H., Nakamori, T., Ozaki, M., Safi-Harb, S., Sawada, M., Tamagawa, T., Tamura, K., Tanaka, T., Tsunemi, H., Uchida, H., Uchiyama, Y., Yamauchi, S.
Most supernova remnants (SNRs) are old, in the sense that their structure has been profoundly modified by their interaction with the surrounding interstellar medium (ISM). Old SNRs are very heterogenous in terms of their appearance, reflecting differ
Externí odkaz:
http://arxiv.org/abs/1412.1166
Autor:
Hughes, J. P., Safi-Harb, S., Bamba, A., Katsuda, S., Leutenegger, M., Long, K. S., Maeda, Y., Mori, K., Nakajima, H., Sawada, M., Tanaka, T., Uchida, H., Yamaguchi, H., Aharonian, F., Funk, S., Hiraga, J., Ishida, M., Koyama, K., Matsumoto, H., Nobukawa, M., Ozaki, M., Tamagawa, T., Tsunemi, H., Tomida, H., Uchiyama, Y., Uno, S.
Thanks to the unprecedented spectral resolution and sensitivity of the Soft X-ray Spectrometer (SXS) to soft thermal X-ray emission, ASTRO-H will open a new discovery window for understanding young, ejecta-dominated, supernova remnants (SNRs). In par
Externí odkaz:
http://arxiv.org/abs/1412.1169
Autor:
Maeda, Y., Uchiyama, Y., Bamba, A., Kosugi, H., Tsunemi, H., Helder, E. A., Vink, J., Kodaka, N., Terada, Y., Fukazawa, Y., Hiraga, J., Hughes, J. P., Kokubun, M., Kouzu, T., Matsumoto, H., Miyata, E., Nakamura, R., Okada, S., Someya, K., Tamagawa, T., Tamura, K., Totsuka, K., Tsuboi, Y., Ezoe, Y., Holt, S. S., Ishida, M., Kamae, T., Petre, R., Takahashi, T.
Suzaku X-ray observations of a young supernova remnant, Cassiopeia A, were carried out. K-shell transition lines from highly ionized ions of various elements were detected, including Chromium (Cr-Kalpha at 5.61 keV). The X-ray continuum spectra were
Externí odkaz:
http://arxiv.org/abs/0912.5020
Autor:
Tamagawa, T., Hayato, A., Nakamura, S., Terada, Y., Bamba, A., Hiraga, J. S., Hughes, J. P., Hwang, U., Kataoka, J., Kinugasa, K., Kunieda, H., Tanaka, T., Tsunemi, H., Ueno, M., Holt, S. S., Kokubun, M., Miyata, E., Szymkowiak, A., Takahashi, T., Tamura, K., Ueno, D., Makishima, K.
Publikováno v:
Publ.Astron.Soc.Jap. 61 (2009) 167-174
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
Externí odkaz:
http://arxiv.org/abs/0805.3377
The recent X-ray and CO observations of RX J1713.7-3946 show that a significant fraction of the nonthermal X-ray emission of this unique supernova remnant associates, in one way or another, with a molecular cloud interacting with the west part of the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0503199
Autor:
Miyata, E., Miki, M., Hiraga, J., Kouno, H., Yasui, K., Tsunemi, H., Miyaguchi, K., Yamamoto, K.
We have employed a mesh experiment for back-illuminated (BI) CCDs. BI CCDs possess the same structure to those of FI CCDs. Since X-ray photons enter from the back surface of the CCD, a primary charge cloud is formed far from the electrodes. The prima
Externí odkaz:
http://arxiv.org/abs/physics/0206021
A charge-coupled device (CCD) is a standard imager in optical region in which the image quality is limited by its pixel size. CCDs also function in X-ray region but with substantial differences in performance. An optical photon generates only one ele
Externí odkaz:
http://arxiv.org/abs/astro-ph/0204014