DSA-2000
(Deep Synoptic Array 2000)
(array plan to detect radio transients)
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.
(telescope,radio,ground,plan,transients)
Further reading:
https://en.wikipedia.org/wiki/Owens_Valley_Radio_Observatory#Instruments
https://www.deepsynoptic.org/
http://www.astro.caltech.edu/~vikram/DSA_2000__Specifications.pdf
https://ui.adsabs.harvard.edu/abs/2019MNRAS.489..919K/abstract
https://ui.adsabs.harvard.edu/abs/2021AAS...23731604R/abstract
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1911140
https://www.space.com/fast-radio-bursts-weigh-milky-way
WaveL | Freq | Photon Energy | | |
150mm | 2GHz | 8.3μeV | begin | DSA-2000 |
428mm | .7GHz | 2.9μeV | end | DSA-2000 |
|
Referenced by pages:
Owens Valley Radio Observatory (OVRO)
Radio Camera Initiative (RCI)
Index