Search Publications
The Suzaku Observation of NGC3516: Complex Absorption and the Broad and Narrow FeK Lines
Fabian, Andrew C.; Kunieda, Hideyo; Okajima, Takashi +10 more
We present results from a 150ks Suzaku observation of the Seyfert 1.5 NGC3516 in 2005 October. The source was in a relatively highly absorbed state. Our best-fit model is consistent with the presence of a low-ionization absorber having a column density near 5×1022 cm-2 and covering most of the X-ray continuum source (covering…
Suzaku Spectroscopy of Extended X-Ray Emission in M17
Hamaguchi, Kenji; Maeda, Yoshitomo; Tsujimoto, Masahiro +5 more
We present the results of a Suzaku spectroscopic study of soft extended X-ray emission in the HII region of M17. The spectrum of the extended emission was obtained with a high signal-to-noise ratio in a spatially resolved manner using the X-ray Imaging Spectrometer (XIS). We established that contamination by unresolved point sources, the Galactic …
Detailed Hard X-Ray Measurements of Nuclear Emission from the Seyfert2 Galaxy NGC4388 with Suzaku
Fukazawa, Yasushi; Murakami, Toshio; Ohno, Masanori +10 more
We report on a Suzaku observation of the nearby Seyfert2 galaxy NGC4388. The overall spectrum is well described by the combination of strongly absorbed power-law plus thin thermal plasma emission, as well as previous observations. Thanks to well-calibrated instruments and a low background level, Suzaku measured the broad-band X-ray spectra more pr…
Supernova Remnants in the AKARI IRC Survey of the Large Magellanic Cloud
Onaka, Takashi; Ita, Yoshifusa; Seok, Ji Yeon +9 more
We present a near- to mid-infared study of supernova remnants (SNRs) using the AKARI IRC Survey of the Large Magellanic Cloud (LMC). The LMC survey observed about a10 square degree area of the LMC in five bands centered at 3, 7, 11, 15, and 24 µm using the Infrared Camera (IRC) aboard AKARI. The number of SNRs in the survey area is 21, which…
Suzaku Observation of the RCW86 Northeastern Shell
Yamaguchi, Hiroya; Koyama, Katsuji; Nakajima, Hiroshi +4 more
This paper reports on Suzaku results concerning the northeast shell of RCW86. With both spatial and spectral analyses, we separated the X-rays into three distinct components: low (kTe ∼ 0.3keV) and high (kTe ∼ 1.8keV) temperature plasmas and a non-thermal component, and discovered that their spatial distributions are differen…
Suzaku Observation of HCG 62: Temperature, Abundance, and Extended Hard X-Ray Emission Profiles
Isobe, Naoki; Hoshino, Akio; Sato, Kosuke +14 more
The compact group of galaxies HCG 62(z = 0.0145) was observed for 120ks with Suzaku XIS and HXD-PIN. The XIS spectra for four annular regions were fitted with a two-temperature vapec model with variable abundance, combined with the foreground Galactic component. The Galactic component was described by a two-temperature apec model, and constrained …
Spectroscopic Confirmation of the Fifth Image of SDSS J1004+4112 and Implications for the MBH--σ* Relation at z = 0.68
Smith, Graham P.; Oguri, Masamune; Sharon, Keren +5 more
We present the results of deep spectroscopy for the central region of the cluster lens SDSSJ 1004+4112 with the Subaru Telescope. A secure detection of an emission line of the faint blue stellar object (component E) near the center of the brightest cluster galaxy (G1) confirms that it is the central fifth image of the lensed quasar system. In addi…
Far-Infrared Properties of Blue Compact Dwarf Galaxies Observed with AKARI/Far-Infrared Surveyor (FIS)
Onaka, Takashi; Kaneda, Hidehiro; Suzuki, Toyoaki +1 more
We report on the basic far-infrared (FIR) properties of eight blue compact dwarf galaxies (BCDs) observed by AKARI. We have measured the fluxes at the four FIS bands (wavelengths of 65 µm, 90 µm, 140 µm, and 160 µm). Based on these fluxes, we have estimated basic quantities of dust: dust temperature, dust mass, and total FI…
2006 December 17 Long Duration Flare Observed with the Hinode EUV Imaging Spectrometer
Harra, Louise K.; Doschek, George A.; Hara, Hirohisa +5 more
A GOES C-class long-duration flare that occurred near the west limb on 2006 December 17 was observed with the Hinode EUV Imaging Spectrometer (EIS) in raster-scan observations. Cusp-shaped arcades are prominent in the spectroheliogram of the CaXVII emission line at 192.86Å. Spatial relationships between hot flare loops with a cusp apex and cool po…
The Symbiotic System SS73 17 Seen with Suzaku
Mukai, Koji; Kallman, Tim; Smith, Randall K. +3 more
We observed with Suzaku the symbiotic star SS73 17, motivated by the discovery by the INTEGRAL satellite and the Swift BAT survey that it emits hard X-rays. Our observations showed a highly-absorbed X-ray spectrum with NH > 1023cm-2, equivalent to AV > 26, although the source has B magnitude 11.3 a…