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The DSA-2000 - A Radio Survey Camera

Hallinan, G. and Ravi, V. and Weinreb, S. and Kocz, J. and Huang, Y. and Woody, D. P. and Lamb, J. and D'Addario, L. and Catha, M. and Shi, J. and Law, C. and Kulkarni, S. R. and Phinney, E. S. and Eastwood, M. W. and Bouman, K. L. and McLaughlin, M. A. and Ransom, S. M. and Siemens, X. and Cordes, J. M. and Lynch, R. S. and Kaplan, D. L. and Chatterjee, S. and Lazio, J. and Brazier, A. and Bhatnagar, S. and Myers, S. T. and Walter, F. and Gaensler, B. M. (2019) The DSA-2000 - A Radio Survey Camera. Astro2020 Science White Paper, . (Unpublished)

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We present the DSA-2000: a world-leading radio survey telescope and multi-messenger discovery engine for the next decade. The array will be the first true radio camera, outputting science-ready image data over the 0.7 - 2 GHz frequency range with a spatial resolution of 3.5 arcsec. With 2000 x 5 m dishes, the DSA-2000 will have an equivalent point-source sensitivity to SKA1-mid, but with ten times the survey speed. The DSA-2000 is envisaged as an all-sky survey instrument complementary to the ngVLA, and as a counterpart to the LSST (optical), SPHEREx (near-infrared) and SRG/eROSITA (X-ray) all-sky surveys. Over a five-year prime phase, the DSA-2000 will image the entire sky above declination -30 degrees every four months, detecting > 1 unique billion radio sources in a combined full-Stokes sky map with 500 nJy/beam rms noise. This all-sky survey will be complemented by intermediate and deep surveys, as well as spectral and polarization image cubes. The array will be a cornerstone for multi-messenger science, serving as the principal instrument for the US pulsar timing array community, and by searching for radio afterglows of compact object mergers detected by LIGO and Virgo. The array will simultaneously detect and localize ~10,000 fast radio bursts each year, realizing their ultimate use as a cosmological tool. The DSA-2000 will be proposed to the NSF Mid-Scale Research Infrastructure-2 program with a view to first light in 2026.

Item Type:Report or Paper (White Paper)
Related URLs:
URLURL TypeDescription Paper
Hallinan, G.0000-0002-7083-4049
Ravi, V.0000-0002-7252-5485
Weinreb, S.0000-0002-9353-6204
Kocz, J.0000-0003-0249-7586
Law, C.0000-0002-4119-9963
Kulkarni, S. R.0000-0001-5390-8563
Eastwood, M. W.0000-0002-4731-6083
Bouman, K. L.0000-0003-0077-4367
Kaplan, D. L.0000-0001-6295-2881
Chatterjee, S.0000-0002-2878-1502
Walter, F.0000-0003-4793-7880
Gaensler, B. M.0000-0002-3382-9558
Group:Astronomy Department
Series Name:Astro2020 Science White Paper
Record Number:CaltechAUTHORS:20190722-100036103
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97315
Deposited By: Tony Diaz
Deposited On:22 Jul 2019 17:08
Last Modified:08 Dec 2020 00:29

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