Search Publications
Interpretation of the X-ray spectral variation of 1H 0707-495 with a variable double partial covering model
Ebisawa, Ken; Mizumoto, Misaki; Sameshima, Hiroaki
The narrow-line Seyfert 1 galaxy 1H 0707-495 is known to exhibit significant X-ray spectral variations. Its X-ray energy spectrum is characterized by a strong soft excess emission, an extremely deep iron K-edge structure at ∼ 7 keV, and a putative iron L-line/edge feature at ∼ 1 keV. We have found that the energy spectrum of 1H 0707-495 in 0.5-10 …
X-ray spectroscopy of the mixed morphology supernova remnant W 28 with XMM-Newton
Ishida, Manabu; Bamba, Aya; Tatematsu, Ken'ichi +6 more
We report on spatially resolved X-ray spectroscopy of the north-eastern part of the mixed morphology supernova remnant (SNR) W 28 with XMM-Newton. The observed field of view includes a prominent and twisted shell emission forming the edge of this SNR as well as part of the center-filled X-ray emission brightening toward the south-west edge of the …
X-ray emission from the galactic supernova remnant G12.0-0.1
Koyama, Katsuji; Bamba, Aya; Yamauchi, Shigeo
We present results of the Suzaku/XIS observation around the radio supernova remnant (SNR) G12.0-0.1. No significant diffuse emission extending in or along the radio shell was observed. Instead, two compact X-ray sources, Suzaku J181205-1835 and Suzaku J181210-1842, were found in or near G12.0-0.1. Suzaku J181205-1835 is located at the north-west o…
X-ray development of the classical nova V2672 Ophiuchi with Suzaku
Drake, Jeremy J.; Tsujimoto, Masahiro; Kitamoto, Shunji +1 more
We report on the Suzaku detection of a rapid flare-like X-ray flux amplification early in the development of the classical nova V2672 Ophiuchi. Two target-of-opportunity ∼ 25 ks X-ray observations were made 12 and 22 d after the outburst. The flux amplification was found in the latter half of day 12. Time-sliced spectra are characterized by a grow…