Tuneyoshi Kamae

Deconvolution of Images Taken with the Suzaku X-ray Imaging Spectrometer (2008)

Sugizaki, Mutsumi, Kamae, Tuneyoshi, Maeda, Yoshitomo

We present a non-iterative method to deconvolve the spatial response function or the point spread function (PSF) from images taken with the Suzaku X-ray Imaging Spectrometer (XIS). The method is...

PoGOLite - A High Sensitivity Balloon-Borne Soft Gamma-ray Polarimeter (2007)

Kamae, Tuneyoshi, Andersson, Viktor, Arimoto, Makoto, Axelsson, Magnus, Bettolo, Cecilia Marini, Björnsson, Claes-Ingvar, ...

We describe a new balloon-borne instrument (PoGOLite) capable of detecting 10% polarisation from 200mCrab point-like sources between 25 and 80keV in one 6 hour flight. Polarisation measurements in...

Parameterization of the Angular Distribution of Gamma Rays Produced by p-p Interaction in Astronomical Environment (2007)

Karlsson, Niklas, Kamae, Tuneyoshi

We present the angular distribution of gamma rays produced by proton-proton interactions in parameterized formulae to facilitate calculations in astrophysical environments. The parameterization is...

Studies of Cosmic Rays with GeV Gamma Rays (2007)

Tajima, Hiroyasu, Kamae, Tuneyoshi, Finazzi, Stefano, Cohen-Tanugi, Johann, Chiang, James

We describe the role of GeV gamma-ray observations with GLAST-LAT (Gamma-ray Large Area Space Telescope - Large Area Telescope) in identifying interaction sites of cosmic-ray proton (or hadrons) with...

Studies of EGRET sources with a novel image restoration technique (2007)

Tajima, Hiroyasu, Finazzi, Stefano, Cohen-Tanugi, Johann, Chiang, James, Kamae, Tuneyoshi

We have developed an image restoration technique based on the Richardson-Lucy algorithm optimized for GLAST-LAT image analysis. Our algorithm is original since it utilizes the PSF (point spread...

The X-ray observatory Suzaku (2007)

Mitsuda, Kazuhisa, Bautz, Mark, Inoue, Hajime, Kelley, Richard L., Koyama, Katsuji, Kunieda, Hideyo, ...

Parameterization of Gamma, e^+/- and Neutrino Spectra Produced by p-p Interaction in Astronomical Environment (2006)

Kamae, Tuneyoshi, Karlsson, Niklas, Mizuno, Tsunefumi, Abe, Toshinori, Koi, Tatsumi

We present the yield and spectra of stable secondary particles (gamma, e^+/-, nu_e, nubar_e, nu_mu, and nubar_mu) of p-p interaction in parameterized formulae to facilitate calculations involving...

Gamma-ray Polarimetry with Compton Telescope (2004)

Tajima, Hiroyasu, Madejski, Grzegorz, Mitani, Takefumi, Tanaka, Takaaki, Nakamura, Hidehito, Nakazawa, Kazuhiro, ...

Compton telescope is a promising technology to achieve very high sensitivity in the soft gamma-ray band (0.1-10 MeV) by utilizing Compton kinematics. Compton kinematics also enables polarization...

X-Ray Probing of the Central Regions of Clusters of Galaxies (2001)

Makishima, Kazuo, Ezawa, Hajime, Fukazawa, Yasushi, Honda, Hirohiko, Ikebe, Yasushi, Kamae, Tuneyoshi, ...

Results of ASCA X-ray study of central regions of medium-richness clusters of galaxies are summarized, emphasizing differences between cD and non-cD clusters. The intra-cluster medium (ICM) is likely...