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The DSA-2000 -- A Radio Survey Camera | | G. Hallinan
; V. Ravi
; S. Weinreb
; J. Kocz
; Y. Huang
; D. P. Woody
; J. Lamb
; L. D'Addario
; M. Catha
; J. Shi
; C. Law
; S. R. Kulkarni
; E. S. Phinney
; M. W. Eastwood
; K. L. Bouman
; M. A. McLaughlin
; S. M. Ransom
; X. Siemens
; J. M. Cordes
; R. S. Lynch
; D. L. Kaplan
; S. Chatterjee
; J. Lazio
; A. Brazier
; S. Bhatnagar
; S. T. Myers
; F. Walter
; B. M. Gaensler
; | | Date: |
17 Jul 2019 | | Abstract: | 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 | | Source: | arXiv, 1907.7648 | | Services: | Forum | Review | PDF | Favorites | |
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