High and low galactic latitude radio transients in the Nasu 1.4 GHz wide-field survey

N. Matsumura, T. Daishido, M. Kuniyosfd, K. Asuma, K. Takefuji, K. Niinuma, S. Kida, A. Takeuchi, R. Nakamura, S. Shigehiro, T. Tanaka

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    Abstract

    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.

    Original languageEnglish
    Pages (from-to)1441-1446
    Number of pages6
    JournalAstronomical Journal
    Volume133
    Issue number4
    DOIs
    Publication statusPublished - 2007 Apr

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    Keywords

    • Radio continuum: general
    • Stars: variables: other
    • Techniques: interferometric

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

    Cite this

    Matsumura, N., Daishido, T., Kuniyosfd, M., Asuma, K., Takefuji, K., Niinuma, K., Kida, S., Takeuchi, A., Nakamura, R., Shigehiro, S., & Tanaka, T. (2007). High and low galactic latitude radio transients in the Nasu 1.4 GHz wide-field survey. Astronomical Journal, 133(4), 1441-1446. https://doi.org/10.1086/511774