VLA+VLBA to ngVLA Transition Option Concepts

Alessandra Corsi; Joseph W. Lazio; Stefi Baum; Simona Giacintucci; George Heald; Patricia Henning; Ian Heywood; Daisuke Iono; Megan Johnson; Michael T. Lam; Adam Leroy; Laurent Loinard; Leslie Looney; Lynn Matthews; Ned Molter; Eric Murphy; Eva Schinnerer; Alex Tetarenko; Grazia Umana; Alexander van der Horst

arXiv · 2501.06333

VLA+VLBA to ngVLA Transition Option Concepts

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Abstract

The next-generation Very Large Array (ngVLA) is intended to be the premier centimeter-wavelength facility for astronomy and astrophysics, building on the substantial scientific legacies of the Karl G. Jansky Very Large Array (VLA) and the Very Long Baseline Array (VLBA). The ngVLA would open a new window on the Universe through ultra-sensitive imaging of thermal line and continuum emission to milliarcsecond resolution, while delivering unprecedented broad-band continuum imaging and polarimetry of non-thermal emission. The ngVLA would provide a critical electromagnetic complement to a suite of particle detectors and gravitational-wave observatories, as well as space- and ground-based telescopes operating from infrared to gamma-ray wavelengths, hence enabling multi-messenger and multi-band astronomy and astrophysics. Current construction plans call for the ngVLA to leverage some of the physical infrastructure of both the VLA and the VLBA, potentially drawing on overlapping personnel and information infrastructure. Multiple options can be envisioned for a VLA+VLBA to ngVLA transition. In order to assess risks and benefits of possible transition plans, the ngVLA project established the VLA+VLBA to ngVLA Transition Advisory Group (TAG). The primary deliverable from the TAG is a ``VLA+VLBA to ngVLA Transition Option Concepts'' report (this report) that includes a prioritized list of transition options.

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Alessandra Corsi, Joseph W. Lazio, Stefi Baum, Simona Giacintucci, George Heald, Patricia Henning, Ian Heywood, Daisuke Iono, Megan Johnson, Michael T. Lam, Adam Leroy, Laurent Loinard, Leslie Looney, Lynn Matthews, Ned Molter, Eric Murphy, Eva Schinnerer, Alex Tetarenko, Grazia Umana, Alexander van der Horst. 2025-01-10. VLA+VLBA to ngVLA Transition Option Concepts. https://arxiv.org/abs/2501.06333

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