https://www.deepsynoptic.org/overview 0 Skip to Content Deep Synoptic Array (DSA) Home DSA-110 Instrument Science Publications Team Archive DSA-2000 Overview Key Science Technology Site Team SAC Community Input Astro2020 White Paper Contact Science Workshops 2023 Conference 2023 AAS Special Session (DSA-110) 2022 AAS Splinter Meeting 2022 Workshop RCI website Open Menu Close Menu Deep Synoptic Array (DSA) Home DSA-110 Instrument Science Publications Team Archive DSA-2000 Overview Key Science Technology Site Team SAC Community Input Astro2020 White Paper Contact Science Workshops 2023 Conference 2023 AAS Special Session (DSA-110) 2022 AAS Splinter Meeting 2022 Workshop RCI website Open Menu Close Menu Home Folder: DSA-110 Back Instrument Science Publications Team Archive Folder: DSA-2000 Back Overview Key Science Technology Site Team SAC Community Input Astro2020 White Paper Contact Folder: Science Workshops Back 2023 Conference 2023 AAS Special Session (DSA-110) 2022 AAS Splinter Meeting 2022 Workshop RCI website THE DSA-2000 The DSA-2000 is proposed to be a world-leading radio survey telescope and multi-messenger discovery engine. The array will consist of 2000 x 5m dishes instantaneously covering the 0.7 - 2 GHz frequency range, spanning an area of 19 km x 15 km in Nevada. It will have near complete sampling of the uv-plane allowing us to replace a traditional correlator digital backend with a "radio camera." In a five-year prime phase, the DSA-2000 will image the entire viewable sky (~30,000 deg2) repeatedly over sixteen epochs, detecting >1 billion radio sources in a combined full-Stokes sky map with 500 nJy/ beam rms noise. As a radio survey instrument it will be unprecedented relative to any instrument existing or planned. Image: C. Carter A Multi-Messenger Radio Survey Camera The DSA-2000 will deliver a radio counterpart to the transformative astronomical surveys of the 2020s (e.g., Rubin Observatory, SPHEREx, SRG/eROSITA). View fullsize [pie] 65% of the time will be used to image the entire sky 16 times over 5 years, producing fully polarized, spectral image cubes spanning 0.7 - 2 GHz, increasing the population of known radio sources by > 100x. 25% of time will be used to survey the nanoHertz gravitational-wave (GW) sky through pulsar timing observations conducted by the NANOGrav collaboration. 5% of the time will be used to conduct daily observations of select fields, particularly the Rubin Observatory deep fields. 5% of the time will be used to conduct a systematic search for electromagnetic counterparts to neutron-star mergers detected by LIGO /Virgo/KAGRA. Continuous monitoring of high time resolution data will detect 1000s of fast radio bursts each year, and provide input to a unique pulsar survey. Parameter Value Reflectors 2000 x 5-m dishes Frequency coverage 0.7 - 2 GHz Bandwidth 1.3 GHz Field of view 10.6 deg^2 Spatial resolution 3.5 arcsec System temperature 25 K Aperture efficiency 70% System-equivalent flux density (SEFD) 2.5 Jy Survey speed figure of merit 1.3 x 10^7 deg^2 m^4 K^-2 Continuum sensitivity (1 hour) 1 mJy All-sky survey (per epoch) 30,000 deg^2 @ 2 mJy/beam All-sky survey (combined) 30,000 deg^2 @ 500 nJy/beam Pulsar timing fields (intermediate) 2000 deg^2 @ 200 nJy/beam Deep drilling fields 30 deg^2 @ 100 nJy/beam Brightness temperature (1s) 5 mK Number of unique sources > 1 billion Unparalleled Survey Speed View fullsize [speed_sens] Survey speed and sensitivity of the DSA-2000 and other current (small squares) and planned (large squares) radio telescopes that operate at 1.4 GHz. The DSA-2000 is unique among current and planned large radio telescopes, in that it will operate as a dedicated survey telescope. This allows the array design to be highly optimized to maximize survey speed - a low cost antenna with an ambient temperature receiver will operate at a single frequency band, with all observations conducted in blocks of 15 minutes. The homogeneous nature of the resulting data is a key factor that enables the radio camera approach for the DSA-2000, with data products that will bypass the growing data deluge problem in radio astronomy, enabling broader community access to the radio sky. This strategy will allow the DSA-2000 to survey the sky at a rate ~1000x the current state of the art in the US (the VLA), ~200x the state of the art worldwide (MeerKAT), and ~6x faster than any array in development. The Deep Synoptic Array project is made possible by [Caltech_lo] [OVRO_padde] [NSF_logo_p] [schmidt-fu] [nanograv_l]