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

*この研究の対応する著者

    研究成果: Article査読

    7 被引用数 (Scopus)

    抄録

    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.

    本文言語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
    851
    DOI
    出版ステータスPublished - 2007 1月

    ASJC Scopus subject areas

    • 天文学と天体物理学
    • 宇宙惑星科学

    フィンガープリント

    「Receiver gain calibration for radio observations at the Waseda Nasu Pulsar Observatory」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル