THE ALLEN TELESCOPE ARRAY Pi GHz SKY SURVEY. I. SURVEY DESCRIPTION AND STATIC CATALOG RESULTS FOR THE BOOeTES FIELD
- University of California, Berkeley, 601 Campbell Hall 3411, Berkeley, CA 94720 (United States)
- SETI Institute, Mountain View, CA 94043 (United States)
- Electrical and Systems Engineering Department, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114 (United States)
- Minex Engineering, Antioch, CA 94509 (United States)
- CSIRO/ATNF, Epping, NSW 1710 (Australia)
The Pi GHz Sky Survey (PiGSS) is a key project of the Allen Telescope Array. PiGSS is a 3.1 GHz survey of radio continuum emission in the extragalactic sky with an emphasis on synoptic observations that measure the static and time-variable properties of the sky. During the 2.5 year campaign, PiGSS will twice observe {approx}250,000 radio sources in the 10,000 deg{sup 2} region of the sky with b>30{sup 0} to an rms sensitivity of {approx}1 mJy. Additionally, sub-regions of the sky will be observed multiple times to characterize variability on timescales of days to years. We present here observations of a 10 deg{sup 2} region in the Booetes constellation overlapping the NOAO Deep Wide Field Survey field. The PiGSS image was constructed from 75 daily observations distributed over a 4 month period and has an rms flux density between 200 and 250 {mu}Jy. This represents a deeper image by a factor of 4-8 than we will achieve over the entire 10,000 deg{sup 2}. We provide flux densities, source sizes, and spectral indices for the 425 sources detected in the image. We identify {approx}100 new flat-spectrum radio sources; we project that when completed PiGSS will identify 10{sup 4} flat-spectrum sources. We identify one source that is a possible transient radio source. This survey provides new limits on faint radio transients and variables with characteristic durations of months.
- OSTI ID:
- 21476671
- Journal Information:
- Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 725; ISSN ASJOAB; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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