Abstract: This talk will describe the current science goals, design and planning status of a future large centimeter radio array: the ‘Next Generation Very Large Array’ (ngVLA). The ngVLA is being developed to observe at wavelengths between ALMA at submm wavelengths, and the future SKA-1 at few centimeter and longer wavelengths, opening a new window on the Universe through ultra-sensitive imaging of thermal line and continuum emission down to milliarcsecond resolution, and unprecedented broad band continuum polarimetric imaging of non-thermal processes. The current design for the array includes 10x more effective collecting area and 10x higher spatial resolution than the current JVLA or ALMA, carefully optimized for operation in the frequency range 10GHz to 50GHz, while delivering world-leading sensitivity over the entire 1.2GHz to 115GHz spectrum.
With this array, new frontiers in modern astronomy can be reached, including direct imaging and chemical analysis of planet formation in the terrestrial-zone or nearby stars, to studies of dust-obscured star formation and the cosmic baryon cycle down to pc-scales in the local Universe, and detailed imaging of molecular gas and galaxy formation out to high redshifts. Novel techniques for exploring temporal phenomena on timescales from milliseconds to years can be implemented, including leading-edge high-sensitivity technosignature searches. The ngVLA will be situated in the desert southwest of the United States, centered on the current JVLA infrastructure, with multiple antennas anticipated in states/regions adjacent to NM, and in northern Mexico.
In this talk the current status of ngVLA, including science drivers, and the design and parameter space of the instrument will be presented, in particular exploring the opportunities for new technosignature searches and capabilities. The ngVLA project is currently in a design/development phase, working with the scientific community to continue concept development, and presenting information to the U.S. Decadal Survey.
Host: Jason Wright