EGRET Unidentified Source Radio Observations and Performance of Receiver Gain Calibration

Details EGRET Unidentified Source Radio Observations and Performance of Receiver Gain Calibration EGRET Unidentified Source Radio Observations and Performance of Receiver Gain Calibration

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jphcs..31..223n&link_type=abstract

Journal of Physics: Conference Series, Volume 31, Issue 1, pp. 223-224 (2006).

Physics

1

Scientific paper

Last 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.

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