Receiver gain calibration for radio observations at the Waseda Nasu Pulsar Observatory

K. Niinuma, M. Kuniyoshi, N. Matsumura, K. Takefuji, S. Kida, A. Takeuchi, R. Nakamura, S. Suzuki, H. Ichikwa, K. Asuma, T. Daishido

    研究成果: Article

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    We have started programs at the Waseda Nasu Pulsar Observatory to identify EGRET γ-ray sources and to search for radio transients. The observed frequency was 1.4 ± 0.01 GHz, and eight-element spherical dish antennas were used as four pairs of interferometers, with each element 20 m in diameter. The observable region was ±5° from zenith, covering a region of sky 32° ≤ δ ≤ 42° in declination. For accurate flux measurement, we developed a receiver gain calibration system using Johnson-Nyquist noise; the system was compact, inexpensive, and easily maintained. We describe the system and recent results of radio source monitoring.

    元の言語English
    ページ(範囲)112-121
    ページ数10
    ジャーナルPublications of the Astronomical Society of the Pacific
    119
    発行部数851
    DOI
    出版物ステータスPublished - 2007 1

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

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    Niinuma, K., Kuniyoshi, M., Matsumura, N., Takefuji, K., Kida, S., Takeuchi, A., Nakamura, R., Suzuki, S., Ichikwa, H., Asuma, K., & Daishido, T. (2007). Receiver gain calibration for radio observations at the Waseda Nasu Pulsar Observatory. Publications of the Astronomical Society of the Pacific, 119(851), 112-121. https://doi.org/10.1086/511388