Discovery of two radio transients at a high galactic latitude in a 1.4 ghz drift-scan survey

K. Niinuma*, T. Daishido, N. Matsumura, K. Takefuji, M. Kuniyoshi, K. Asuma, S. Kida, T. Tanaka, T. Aoki, S. Ishikawa, K. Hirano, H. Uehara, S. Nakagawa

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)


    We report two new radio transients at high Galactic latitude, WJN J0951+3300 (α = 09h51m22s 10s, δ = 33°00′ 0°.4, b = 50°542) and WJN J1039+3300 (α = 10h39m26s 10s, δ = 33°00′ 0°.4, b = 60°585), which were detected by interferometric drift-scan observations at 1.4 GHz at the Waseda Nasu Pulsar Observatory. WJN J0951+3300 was detected at 16:49:32 UT on 2006 January 12 with the flux density of approximately 1760.5 265.9 mJy, and WJN J1039+3300 was detected at 17:13:32 UT on 2006 January 18 with the flux density of approximately 2242.5 228.7 mJy. Both of them lasted for a short duration (≤2 days). The possibility that the distribution of the WJN radio transients is isotropic was suggested in a previous study. Having re-evaluated the log N-log S relation with the addition of the two new objects reported in this paper, we find that the slope is consistent with a slope of -1.5 and the previous result. Additionally, although there are several counterparts to WJN radio transients, we found that one of the quasar counterparts within the positional error of WJN J0951+3300 could be a radio-loud quasar. We have discussed whether or not WJN J0951+3300 could be of this quasar origin.

    Original languageEnglish
    Pages (from-to)652-660
    Number of pages9
    JournalAstrophysical Journal
    Issue number1
    Publication statusPublished - 2009


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

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics


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