Compact Structure in FIRST Survey Sources

Details Compact Structure in FIRST Survey Sources Compact Structure in FIRST Survey Sources

2004-12-29

arxiv.org/abs/astro-ph/0412651v1

Astronomy and Astrophysics

Astrophysics

4 pages. 12 figures. Proceedings of the 7th European VLBI Network Symposium held in Toledo, Spain on October 12-15, 2004. Edit

Scientific paper

We present preliminary results from a statistical survey of compact structure in faint radio sources. Around 1000 sources from the VLA FIRST survey (flux densities larger than 1 mJy at 1.4 GHz) have been observed with the single-baseline interferometer Effelsberg-Arecibo. We observed each source, selected from a narrow strip of sky at declination 28 deg, for just one minute. The baseline sensitivity at 1.4 GHz, using 512 Mb/s recording, is such that any FIRST source, selected at random, would be detected if most of its flux density is in compact structure. We discuss the detection-rate statistics from one epoch of these observations.

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