Yutaro Sekimoto

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Chandra ACIS–I data of the molecular cloud and HII region complex NGC 6334 were analyzed. The hard X-ray clumps detected with ASCA (Sekimoto et al. 2000) were resolved into 792 point sources. After removing the point sources, an extended X-ray emission component was detected over a 5 × 9 pc 2 region, with the 0.5–8 keV absorption-corrected luminosity of(More)
We have observed the Orion Molecular Clouds 2 and 3 (OMC-2 and OMC-3) with the Chandra X-ray Observatory (CXO). The northern part of OMC-3 is found to be particularly rich in new X-ray features; four hard X-ray sources are located in and along the filament of cloud cores. Two sources coincide positionally with the submm-mm dust condensations of MMS 2 and 3(More)
SUMMARY A precise measurement of Cosmic Microwave Background (CMB) provides us rich information about the universe. In particular , its asymmetric polarization patterns, B-modes, are smoking gun signature of inflationary universe. Magnitude of the B-modes is order of 10 nK. Its measurement requires a high sensitive millimeter-wave telescope with a large(More)
We propose an on-chip spectrometer camera for sub-millimeter astronomy. The camera will be installed to the focal plane of a telescope and be operated at 0.1 K. The camera is composed of three kinds superconducting circuits, such as wideband antennas, band pass filters (BPFs), and Microwave Kinetic Inductance Detectors (MKID) [1]. All components are(More)
Application of photomixer technologies to radio astronomy has been developed under the collaboration between NAOJ and NTT Laboratories 1-7. We have evaluated high efficiency photomixers for W-band (75-110 GHz) and D-band (110-170GHz) using UTC-PD 8 photodiodes developed by NTT Photonics Laboratories and fabricated by NTT Electronics Co. (NEL) 9-10.(More)
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