The ngVLA: a technical development update

R. Selina; E. Murphy; A. Beasley

doi:10.1117/12.2627730

29 August 2022 The ngVLA: a technical development update

R. Selina, E. Murphy, A. Beasley

Proceedings Volume 12182, Ground-based and Airborne Telescopes IX; 121820O (2022) https://doi.org/10.1117/12.2627730
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

The National Radio Astronomy Observatory (NRAO) has engaged the broad scientific and technical communities in the design of a next-generation Very Large Array [1] (ngVLA), a large-scale research infrastructure project under development for the National Science Foundation Astronomical Sciences Division (NSF-AST) through a cooperative agreement with Associated Universities, Inc. The ngVLA is envisaged as an interferometric array with ten times greater sensitivity and spatial resolution than the current VLA and ALMA, operating in the frequency range of 1.2 - 116 GHz. Replacing both the VLA and VLBA, the ngVLA will be an open-skies, transformative, multi-disciplinary scientific instrument opening a new window on the Universe through ultra-sensitive imaging of thermal line and continuum emission down to milliarcsecond-scale resolution, as well as unprecedented broad-band continuum polarimetric imaging of non-thermal processes. The ngVLA will be optimized for observations in the spectral region between the superb performance of ALMA at sub-mm wavelengths, and the future Phase I Square Kilometer Array (SKA-1) at decimeter and longer wavelengths, resulting in a transformational instrument for the entire scientific community. In 2019, the ngVLA project completed the public release of the ngVLA Reference Design [2][3] as the technical and cost basis of the ngVLA Astro2020 Decadal Survey proposal [4]. With a strong endorsement of the facility concept by the Decadal Survey [5] and continued support from the National Science Foundation, the project is preparing for a System Conceptual Design Review in the spring of 2022. This paper provides a technical update, noting technical advancements and changes to the design baseline.

Conference Presentation

Citation Download Citation

R. Selina, E. Murphy, and A. Beasley "The ngVLA: a technical development update", Proc. SPIE 12182, Ground-based and Airborne Telescopes IX, 121820O (29 August 2022); https://doi.org/10.1117/12.2627730

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