The first VLBI image of an infrared-faint radio source

Are the infrared-faint radio sources pulsars?

Infrared-Faint Radio Sources (IFRS) are objects which are strong at radio wavelengths but undetected in sensitive Spitzer observations at infrared wavelengths. Their nature is uncertain and most have not yet been associated with any known astrophysical object. One possibility is that they are radio pulsars. To test this hypothesis we undertook observations of 16 of these sources with the Parkes...

A New Strategy for the Routine Detection & Imaging of Faint Radio Sources with VLBI

In this paper I outline a new strategy for the routine detection and imaging of faint (sub-mJy and microJy) radio sources with VLBI and SVLBI. The strategy relies on a combination of in-beam phase-referencing, wide-field VLBI imaging and simultaneous correlation of multiple field centres. A combination of these techniques, together with the steeply rising radio source counts observed at cm wave...

Deep VLBI Imaging of Faint Radio Sources in the NOAO Boötes Field

We have conducted a deep, very long baseline interferometry (VLBI) observation at 1.4 GHz of an area of sky located within the NOAO Boötes field, using the NRAO Very Long Baseline Array and 100-m Green Bank Telescope. Applying wide-field VLBI techniques, a total of 61 sources, selected from a Westerbork Synthesis Radio Telescope (WSRT) image, were surveyed simultaneously with a range of differe...

The Faint Radio Sky

Optical Properties of faint FIRST Variable Radio Sources

A sample of 123 radio sources that exhibit significant variations at 1.4 GHz on a seven year base-line has been created using FIRST VLA B-array data from 1995 and 2002 on a strip at δ = 0 near the south Galactic cap. This sample spans the range of radio flux densities from ∼ 2 to 1000 mJy. It presents both in size and radio flux density range a unique starting point for variability studies of g...