VLBA – National Radio Astronomy Observatory

National Radio Astronomy Observatory to Outfit the VLBA with New Ultra Wideband Receivers

The U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) has begun a major upgrade to the NSF Very Long Baseline Array (NSF VLBA) with the development and installation of state-of-the-art ultra wideband receivers capable of operating across the frequency range of 8 to 40 gigahertz (GHz). This new technology, first prototyped by NRAO in collaboration with NASA’s Jet Propulsion Laboratory (JPL), and tested on the NSF VLBA’s Owens Valley station, promises to significantly expand the scientific capabilities of the NSF VLBA.

NSF NRAO Achieves First Successful Observations with New NSF VLBA Digital Architecture

The new NSF VLBA New Digital Architecture (VNDA) produced its first fringes and subsequent images in January 2025, demonstrating the successful implementation of next-generation technology that will enhance the NSF VLBA’s scientific capabilities for years to come.

Astronomers Catch Unprecedented Features at Brink of Active Black Hole

International teams of astronomers monitoring a supermassive black hole in the heart of a distant galaxy have detected features never seen before using data from NASA missions and other facilities including the National Science Foundation (NSF) National Radio Astronomy Observatory (NSF NRAO) Very Long Baseline Array (VLBA).

Astronomers Detect Earliest and Most Distant Blazar in the Universe

A groundbreaking discovery has revealed the presence of a blazar—a supermassive black hole with a jet pointed directly at Earth—at an extraordinary redshift of 7.0. The object, designated VLASS J041009.05−013919.88 (J0410−0139), is the most distant blazar ever identified, providing a rare glimpse into the epoch of reionization when the universe was less than 800 million years old. This discovery challenges existing models of black hole and galaxy formation in the early cosmos.

Precision Measurements Offer Clues to Magnetar’s Cosmic Origin

An international team of astronomers have used a powerful array of radio telescopes to discover new insights about a magnetar that’s only a few hundred years old. By capturing precise measurements of the magnetar’s position and velocity, new clues emerge regarding its developmental path.

Spotted: ‘Death Star’ Black Holes in Action

Huge black holes are firing powerful beams of particles into space — and then changing their aim to fire at new targets.

The National Radio Astronomy Observatory is a facility of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
	Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.
	The U.S. National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."
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