N. Matsumura et al. 2007 The Astronomical Journal 133 1441 doi:10.1086/511774
N. Matsumura1, T. Daishido1, M. Kuniyoshi1, K. Asuma1, K. Takefuji2, K. Niinuma2, S. Kida2, A. Takeuchi2, R. Nakamura2, S. Shigehiro2 and T. Tanaka2
Show affiliationsWe report the detection of two radio transients in the Nasu 1.4 GHz wide-field survey. In the survey, we use four pairs of the two-element interferometer aligned east-west to monitor the wide-field sky and simultaneously survey the region at +32° < δ < +42° in drift scanning. In 27 days of continuous observation at a declination between +41° and +42°, we have detected two radio transients of 1 Jy intensity. Since they appeared on only a single day during the 27 days, we consider these detections to be 1 Jy class bursts that brightened and faded within 2 days and have constant emission smaller than 200 mJy, the detection limit of the 27 days of integrated data. While one transient was in low Galactic latitudes, the other transient was detected in high Galactic latitudes and has counterparts only in γ-ray databases. Therefore, the high Galactic latitude transient might be one of the active galactic nuclei that are normally very faint in X-ray and quiet in radio wavelengths.
radio continuum: general; stars: variables: other; techniques: interferometric
Issue 4 (2007 April)
Received 2006 October 22, accepted for publication 2006 November 30
Published 2007 March 1
N. Matsumura et al. 2007 The Astronomical Journal 133 1441
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