The Closely Positioned Three Radio Transients in the Nasu 1.4 GHz Wide-Field Survey

Details The Closely Positioned Three Radio Transients in the Nasu 1.4 GHz Wide-Field Survey The Closely Positioned Three Radio Transients in the Nasu 1.4 GHz Wide-Field Survey

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aj....138..787m&link_type=abstract

The Astronomical Journal, Volume 138, Issue 3, pp. 787-795 (2009).

Astronomy and Astrophysics

Astronomy

13

Radio Continuum: General, Techniques: Interferometric

Scientific paper

In 2004, we started the Nasu 1.4 GHz wide-field survey to study the dynamic universe by simultaneously performing the surveillance of the wide-field sky. We have detected six radio transients with flux densities larger than 1 Jy. In this paper, we report the detection of three new radio transients in the drift-scanning observations at δ ~ +41fdg7. Based on their positions in the sky and flux densities, we considered the candidate types of astronomical objects for transients. As a result, it is suggested that the three radio transients could be massive radio flares associated with known extragalactic sources, such as active galactic nuclei, which are usually very faint in X-ray and radio wavelengths. The three transients were found in the sky of 2° × 1°, while nine transients, including the three transients reported in this paper, are distributed at both high and low Galactic latitude. According to the observational results, we suggest that the wide-field survey simultaneously performed would be useful in searching for radio transients to study the dynamic radio sky.

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