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13 papers · 2 filters
First Detection of 12CO (1--0) Emission from Two Narrow-Line Seyfert 1 Galaxies
T. Kawaguchi, K. Nakanishi, K. Kohno +2
In order to investigate how the growth of galactic bulges progresses with the growth of central black holes (BHs), we observed molecular gas (fuel for the coming star formation) in…
Suzaku Observation of the Anomalous X-ray Pulsar CXOU J164710.2--455216
Sachindra Naik, Tadayasu Dotani, Nobuyuki Kawai +11
Suzaku TOO observation of the anomalous X-ray pulsar CXOU J164710.2-455216 was performed on 2006 September 23--24 for a net exposure of 38.8 ks. During the observation, the XIS was…
Swift captures the spectrally evolving prompt emission of GRB 070616
R. L. C. Starling, P. T. O'Brien, R. Willingale +14
The origins of Gamma-ray Burst prompt emission are currently not well understood and in this context long, well-observed events are particularly important to study. We present the…
In Orbit Timing Calibration of the Hard X-Ray Detector on Board Suzaku
Yukikatsu Terada, Teruaki Enoto, Ryouhei Miyawaki +28
The hard X-ray detector (HXD) on board the X-ray satellite Suzaku is designed to have a good timing capability with a 61 s time resolution. In addition to detailed descriptions…
Formation of intermediate-mass black holes as primordial black holes in the inflationary cosmology with running spectral index
Toshihiro Kawaguchi, Masahiro Kawasaki, Tsutomu Takayama +2
Formation of primordial black holes (PBHs) on astrophysical mass scales is a natural consequence of inflationary cosmology if the primordial perturbation spectrum has a large and n…
Observations of the Prompt Gamma-Ray Emission of GRB 070125
Eric C. Bellm, Kevin Hurley, Valentin Pal'shin +17
The long, bright gamma-ray burst GRB 070125 was localized by the Interplanetary Network. We present light curves of the prompt gamma-ray emission as observed by Konus-WIND, RHESSI,…