92 citations · 649 across the 27 of their papers we have counts for
16 papers · 1 filter
Circumnuclear Multi-phase Gas in the Circinus Galaxy. V. The Origin of the X-Ray Polarization in the Circinus Galaxy
Atsushi Tanimoto, Keiichi Wada, Yuki Kudoh +3
The Imaging X-ray Polarimetry Explorer (IXPE) detected X-ray polarization in the nearest Seyfert 2 galaxy, the Circinus galaxy, for the first time. To reproduce the IXPE results, w…
A broadband X-ray imaging spectroscopy in the 2030s: the FORCE mission
Koji Mori, Takeshi G. Tsuru, Kazuhiro Nakazawa +49
In this multi-messenger astronomy era, all the observational probes are improving their sensitivities and overall performance. The Focusing on Relativistic universe and Cosmic Evol…
A different view of wind in X-ray binaries: The Accretion Disc Corona source 2S 0921-630
Ryota Tomaru, Chris Done, Hirokazu Odaka +1
Accretion disc coronae (ADC) sources are very high inclination neutron star or black hole binaries, where the outer accretion flow blocks a direct view of the central source. The w…
Orbital- and spin-phase variability in the X-ray emission from the accreting pulsar Cen X-3
Tsubasa Tamba, Hirokazu Odaka, Atsushi Tanimoto +3
We analyzed 39 ks NuSTAR observation data of the high mass X-ray binary Cen X-3 in order to investigate the orbital- and spin-phase spectral variability. The observation covers the…
Broadband X-ray Spectral Analysis of the Dual AGN System Mrk 739
Koki Inaba, Yoshihiro Ueda, Satoshi Yamada +4
We present the result of a broadband (0.5-70 keV) X-ray spectral analysis of the late-merger galaxy Mrk 739, which contains a dual active galactic nucleus (AGN), Mrk 739E and Mrk 7…
NuSTAR Observations of 52 Compton-thick Active Galactic Nuclei Selected by the Swift/BAT All-sky Hard X-Ray Survey
Atsushi Tanimoto, Yoshihiro Ueda, Hirokazu Odaka +2
We present the systematic broadband X-ray spectral analysis of 52 Compton-thick () active galactic nucleus (CTAGN) cand…
Absorption Variability of the Highly Obscured Active Galactic Nucleus NGC 4507
Arghajit Jana, Claudio Ricci, Sachindra Naik +6
We present a detailed study of the highly obscured active galaxy NGC 4507, performed using four Nuclear Spectroscopic Telescope Array (NuSTAR) observations carried out between May…
Systematic Study of AGN Clumpy Tori with Broadband X-ray Spectroscopy: Updated Unified Picture of AGN Structure
Shoji Ogawa, Yoshihiro Ueda, Atsushi Tanimoto +1
We present the results of a systematic, broadband X-ray spectral analysis of nearby active galactic nuclei (AGNs) with the X-ray clumpy torus model (XCLUMPY; Tanimoto et al. 2019).…
Application of X-Ray Clumpy Torus Model (XCLUMPY) to 10 Obscured Active Galactic Nuclei Observed with Suzaku and NuSTAR
Atsushi Tanimoto, Yoshihiro Ueda, Hirokazu Odaka +4
We apply XCLUMPY, an X-ray spectral model from a clumpy torus in an active galactic nucleus (AGN), to the broadband X-ray spectra of 10 obscured AGNs observed with both Suzaku and…
Nature of Compton-thick Active Galactic Nuclei in "Non-merging'' Luminous Infrared Galaxies UGC 2608 and NGC 5135 Revealed with Broadband X-ray Spectroscopy
Satoshi Yamada, Yoshihiro Ueda, Atsushi Tanimoto +4
We have analyzed the broadband X-ray spectra of active galactic nuclei (AGNs) in two "non-merging" luminous infrared galaxies (LIRGs) UGC 2608 and NGC 5135, utilizing the data of N…
X-Ray Spectral Model from Clumpy Torus and Its Application to Circinus Galaxy
Atsushi Tanimoto, Yoshihiro Ueda, Hirokazu Odaka +3
We construct an X-ray spectral model from the clumpy torus in an active galactic nucleus (AGN), designated as "XCLUMPY", utilizing the Monte Carlo simulation for Astrophysics and C…
Luminosity Ratio between [O IV] 25.89 um Line and Nuclear Continuum 12 um as Diagnostic for "Buried" AGN
Satoshi Yamada, Yoshihiro Ueda, Atsushi Tanimoto +3
We propose new diagnostics that utilize the [O IV] 25.89 m and nuclear (subarcsecond scale) 12 m luminosity ratio for identifying whether an AGN is deeply `buried' in their s…
Application of Clumpy Torus Model to Broadband X-ray Spectra of Two Seyfert 1 Galaxies: IC 4329A and NGC 7469
Shoji Ogawa, Yoshihiro Ueda, Satoshi Yamada +2
We apply a new X-ray clumpy torus model called XCLUMPY (Tanimoto et al. 2019), where the clump distribution is assumed to be the same as in the infrared clumpy torus model (CLUMPY)…
The 7-year MAXI/GSC X-ray Source Catalog in the High Galactic-Latitude Sky (3MAXI)
Taiki Kawamuro, Yoshihiro Ueda, Megumi Shidatsu +28
We present the third MAXI/GSC catalog in the high Galactic-latitude sky () based on the 7-year data from 2009 August 13 to 2016 July 31, complementary to that in th…
Broadband X-ray Spectral Analysis of the Double-Nucleus Luminous Infrared Galaxy Mrk 463
Satoshi Yamada, Yoshihiro Ueda, Saeko Oda +4
We present a broadband (0.4-70 keV) X-ray spectral analysis of the luminous infrared galaxy (LIRG) system Mrk 463 observed with Nuclear Spectroscopic Telescope Array (NuSTAR), Chan…
Suzaku Observations of Heavily Obscured (Compton-thick) Active Galactic Nuclei selected by Swift/BAT Hard X-ray Survey
Atsushi Tanimoto, Yoshihiro Ueda, Taiki Kawamuro +3
We present a uniform broadband X-ray (0.5-100.0 keV) spectral analysis of 12 Swift/Burst Alert Telescope (BAT) selected Compton-thick ($\log N_{\mathrm{H}}/\mathrm{cm}^{-2} \geq 24…