A Full-Stokes ALFA Continuum Survey

Details A Full-Stokes ALFA Continuum Survey A Full-Stokes ALFA Continuum Survey

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.7805t&link_type=abstract

American Astronomical Society Meeting 205, #78.05; Bulletin of the American Astronomical Society, Vol. 36, p.1475

Astronomy and Astrophysics

Astronomy

Scientific paper

The GALFA continuum science consortium is planning to use the new Arecibo L-Band feed array (ALFA) to carry out a full-Stokes radio continuum survey of the sky visible from Arecibo Observatory. The key objective of the GALFA Continuum Transit Survey (GALFACTS) is to secure specto-polarimetric images of the linearly polarized emission over the full range of Galactic latitudes from the Galactic mid-plane to the pole with a resolution of 3.3', a sensitivity of ˜ 100 μ Jy/beam, and covering a bandwidth of 1225 -- 1525 MHz. This survey will allow us to create sensitive Rotation Measure maps and to probe the structure of the Galactic magnetic field and the magneto-ionic component of the Galactic Interstellar Medium through the effect of Faraday Rotation by the ISM upon both the smooth Galactic synchrotron radiation field and a dense grid of background polarised extragalactic radio sources. At ˜ 100 μ Jy/beam, the survey will detect of ˜ 105 background polarised radio source probes with an average separation on the sky of about 15'.
We are carrying out pilot observations to demonstrate the imaging capability and to measure the polarimetric response of the Array. I will report the status of these observations and review the plans and scientific goals for the project.

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