Kotaro Niinuma et al 2006 J. Phys.: Conf. Ser. 31 223 doi:10.1088/1742-6596/31/1/064
Kotaro Niinuma1, Kuniyuki Asuma3, Masaya Kuniyoshi2, Nobuo Matsumura1, Kazuhiro Takefuji1, Sumiko Kida1, Akihiko Takeuchi1, Hajime Ichikawa1,5, Akihiro Sawano1,6, Naoya Yoshimura1,7, Shigehiro Suzuki4, Ryosuke Nakamura4, Yu Nakayama4 and Tsuneaki Daishido2
Show affiliationsLast year, we have developed the receiver gain calibration system by using Johnson-Nyquist noise, for accuracy flux measurement, because we have been starting radio identification program of transient radio sources, blazars and radio counterpart of The Energetic Gamma Ray Experiment Telescope (EGRET) unidentified γ-ray sources in Waseda Nasu Pulsar Observatory.
It is shown that there are a few low correlation data between receiver gain and ambient temperature around receiver for anything troubles of receiver, because we can detect gain and ambient temperature through a day by developed system. Estimated fluctuations of daily data of steady sources decrease by removing low correlation data before analysing.
As the result of our analysis by using above system, radio counterpart of EGRET identified source showed fading light-curve for a week.
98.70.Rz &ggr;-ray sources; &ggr;-ray bursts
Issue 1 (2006)
Kotaro Niinuma et al 2006 J. Phys.: Conf. Ser. 31 223
P Christillin 1986 J. Phys. G: Nucl. Phys. 12 837
A Apte et al 2005 Nonlinearity 18 1173