activity
20112018
most citedPossible Evidence for Free Precession of a Strongly Magnetized Neutron Star in the Magnetar 4U 0142+61

117 citations · 539 across the 18 of their papers we have counts for

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Showing 2011Show all

5 papers · 1 filter

astro-ph.IM2011★ 48 cited

Data-oriented Diagnostics of Pileup Effects on the Suzaku XIS

Shin'ya Yamada, Hideki Uchiyama, Tadayasu Dotani +11

We present the result of a systematic study of pileup phenomena seen in the X-ray Imaging Spectrometer, an X-ray CCD instrument, onboard the Suzaku observatory. Using a data set of…

astro-ph.CO2011★ 47 cited

Suzaku Studies of Wide-Band Spectral Variability of the Bright Type I Seyfert Galaxy Markarian 509

Hirofumi Noda, Kazuo Makishima, Shin'ya Yamada +3

The Type I Seyfert galaxy Markarian 509 was observed with Suzaku in 2010 November, for a gross time span of 2.2 days. Timing and spectral properties of the 0.5-45 keV X-rays, detec…

astro-ph.IM2011★ 16 cited

Improvements in calibration of GSO scintillators in the Suzaku Hard X-ray Detector

Shin'ya Yamada, Kazuo Makishima, Kazuhiro Nakazawa +27

Improvements of in-orbit calibration of GSO scintillators in the Hard X-ray Detector on board Suzaku are reported. To resolve an apparent change of the energy scale of GSO which ap…

astro-ph.HE2011★ 12 cited

RXTE Observations of the Low-Mass X-Ray Binary 4U 1608-522 in Upper-Banana State

Hiromitsu Takahashi, Soki Sakurai, Kazuo Makishima

To investigate the physics of mass accretion onto weakly-magnetized neutron stars, 95 archival RXTE datasets of an atoll source 4U 1608-522, acquired over 1996-2004 in so-called up…

astro-ph.HE2011★ 21 cited

Spectral and Timing Studies of Cyg X-1 in the Low/Hard State with Suzaku

Shunsuke Torii, Shin'ya Yamada, Kazuo Makishima +6

From 2005 to 2009, 25 observations of Cyg X-1 were performed with Suzaku, achieving a total exposure of 446 ks. In all observations, the source was found in the low/hard state, whi…