TY - JOUR
T1 - High and low galactic latitude radio transients in the Nasu 1.4 GHz wide-field survey
AU - Matsumura, N.
AU - Daishido, T.
AU - Kuniyosfd, M.
AU - Asuma, K.
AU - Takefuji, K.
AU - Niinuma, K.
AU - Kida, S.
AU - Takeuchi, A.
AU - Nakamura, R.
AU - Shigehiro, S.
AU - Tanaka, T.
PY - 2007/4
Y1 - 2007/4
N2 - We 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° < 6 < +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.
AB - We 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° < 6 < +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.
KW - Radio continuum: general
KW - Stars: variables: other
KW - Techniques: interferometric
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U2 - 10.1086/511774
DO - 10.1086/511774
M3 - Article
AN - SCOPUS:34247502209
SN - 0004-6256
VL - 133
SP - 1441
EP - 1446
JO - Astronomical Journal
JF - Astronomical Journal
IS - 4
ER -