Search Publications
X-Ray Observation of the Galactic Supernova Remnant G355.6-0.0 with Suzaku
Koyama, Katsuji; Ota, Naomi; Yamauchi, Shigeo +1 more
We present results of the Galactic supernova remnant (SNR) G355.6-0.0 observed with Suzaku. We resolved diffuse emission detected with ASCA into two objects, G355.6-0.0 and a point-like source, Suzaku J173530-3236. The X-ray emission from G355.6-0.0 exhibits a center-filled morphology within the radio shell. The X-ray spectrum is well-represented …
Observations and Orbital Analysis of the High-Amplitude Delta Scuti Star SZLyncis: The Unusual Orbital Precession
Li, Lin-Jia; Qian, Sheng-Bang
We determined forty-two new times of light maximum from our photometry observations and WASP project, and collected all times of light maximum observed between 1961 and 2013 in order to calculate the orbital elements of the SZ Lyncis system and the secular change of the pulsation period with the classical O - C method. We confirmed the decrease of…
Search for Non-Thermal Emissions from an Isolated Magnetic White Dwarf, EUVE J0317-855, with Suzaku
Ishida, Manabu; Hayashi, Takayuki; Tashiro, Makoto S. +3 more
Discovery of Diffuse Hard X-Ray Emission from the Vicinity of PSR J1648-4611 with Suzaku
Haba, Yoshito; Matsumoto, Hironori; Sakai, Michito +2 more
We observed the pulsar PSR J1648-4611 with Suzaku. Two X-ray sources, Suzaku J1648-4610 (Src A) and Suzaku J1648-4615 (Src B), were found in the field of view. Src A is coincident with the pulsar PSR J1648-4611, which was also detected by the Fermi Gamma-ray Space Telescope. A hard-band image indicates that Src A is spatially extended. We found po…
Suzaku Follow-Up Observation of the Activated Magnetar 1E 1547.0-5408
Enoto, Teruaki; Makishima, Kazuo; Nakazawa, Kazuhiro +4 more
Detection of a 522 s Pulsation from the Transient X-Ray Source Suzaku J0102.8-7204 (SXP 523) in the Small Magellanic Cloud
Miller, Eric D.; Tsujimoto, Masahiro; Wada, Qazuya +1 more
During a routine calibration observation of 1E 0102.2-7219 in the Small Magellanic Cloud (SMC), carried out in 2012 October for the Suzaku satellite, we detected a transient X-ray source at (RA, Dec) = (01h 02m47s, - 72°04m54s) in the equinox J2000.0 with a positional uncertainty of ∼1.4". We …
Erratum: Hard X-Ray Spectrum from the West Lobe of Radio Galaxy Fornax A Observed with Suzaku
Isobe, Naoki; Tashiro, Makoto S.; Seta, Hiromi +2 more
In the paper [PASJ 61, S327-S335 (2009)], there were two kinds of typos in the units of flux density and the column density. The correct unit of flux density at 1 keV employed in this paper is µJy not nJy, which appears in line 9 of abstract, line 29 of subsection 3.3, and row (d) of table 2. The correct column density in table 2 row (a) is …
Metals in the Intracluster Medium of MS 1512.4+3647 Observed with Suzaku: Implications for the Metal Enrichment History
Sato, Kosuke; Tashiro, Makoto S.; Ohashi, Takaya +5 more
The cluster of galaxies MS 1512.4+3647 (z = 0.372) was observed with Suzaku for 270 ks. Besides the Fe abundance, the abundances of Mg, Si, S, and Ni were separately determined for the first time in a medium redshift cluster (z > 0.3). The derived abundance pattern of MS 1512.4+3647 is consistent with those of nearby clusters, suggesting that t…
SGRs and AXPs as Rotation-Powered Massive White Dwarfs
Malheiro, Manuel; Rueda, Jorge A.; Ruffini, Remo
SGR 0418+5729 is a ``Rosetta Stone'' for deciphering the energy source of Soft Gamma Ray Repeaters (SGRs) and Anomalous X-ray Pulsars (AXPs). We present a model based on canonical physics and astrophysics for SGRs and AXPs powered by massive highly magnetized rotating white dwarfs (WDs), in total analogy with pulsars powered by rotating neutron st…
Recombining Plasma and Hard X-Ray Filament in the Mixed-Morphology Supernova Remnant W 44
Yamaguchi, Hiroya; Uchida, Hiroyuki; Fukui, Yasuo +6 more
We report on new features of the typical mixed-morphology supernova remnant W 44. In X-ray spectra obtained with Suzaku, radiative recombination continua of highly ionized atoms were detected for the first time. The spectra are well reproduced by a thermal plasma in a recombining phase. The best-fit parameters suggest that the electron temperature…