DSA-2000

DSA-2000 (Deep Synoptic Array 2000) is a plan to deploy an array of 2000 5 meter antennas as a radio telescope to detect radio transients. The concept can be thought of as an LSST for radio, over its spectral range of 0.7 to 2 GHz. A 5 year survey is planned with a cadence of 3-4 months, covering the sky above declination -30 degrees. Given the number and placing of the antennas and the survey's planned observation integration time, its imaging is expected to be deconvolution free (a clean image), i.e., the typical clean-up step used in aperture synthesis radio interferometry consisting of a type of deconvolution will be unnecessary. Among its goals is prompt reporting of fast radio bursts (FRBs), with the expectation of detecting thousands of FRBs per year. Over the same five years, some time will be devoted to NANOGrav observations and be used for very-long-baseline interferometry observations. Two preliminary/pilot configurations, located at Owens Valley Radio Observatory (OVRO):

• DSA-10 - a ten-dish array to detect FRBs, which began operation in March 2019.
• DSA-110 - an expansion to a 110-dish array, which began operation in February 2022 with some of its dishes, with more being added as they are readied.

With the growing general interest in FRBs, they have become a primary target of the DSA projects, i.e., offering timely alerts regarding such sub-second transients.