High-energy transient signals are most often determined to be gamma-ray burst events, but the recently-launched Einstein Probe has expanded astronomers’ ability to quickly respond to similar signals occurring at X-ray wavelengths. Now, a multi-wavelength study of EP240408a concludes that while many of the signal’s characteristics might lead to the conclusion that it is a gamma-ray burst, the non-detection at radio wavelengths precludes that possibility.
Recent News
Students Contribute to New Understanding of ‘Twinkling’ Pulsars
The flexible observing setup of the Green Bank Observatory’s 20-meter telescope enabled frequent, long-duration observations of eight pulsars, spanning two and a half years for a student-driven study carried out by students in the Pulsar Science Collaboratory program.
Double the Disks, Double the Discovery: New Insights into Planet Formation in DF Tau
Tucked away in a star-forming region in the Taurus constellation, a pair of circling stars are displaying some unexpected differences in the circumstellar disks of dust and gas that surround them. A new study led by researchers at Lowell Observatory, combining data from the Atacama Large Millimeter/submillimeter Array (ALMA) and Keck Observatory, has unveiled intriguing findings about planet formation in this binary star system, known as DF Tau, along with other systems in this region.
Next Generation VLA Endorsed by Canadian Panel
The Canadian Astronomy Long Range Plan 2020-2030, a report on priorities and recommendations for Canadian astronomy over the next decade, has recommended that Canada support the National Radio Astronomy Observatory’s (NRAO) proposed Next Generation Very Large Array (ngVLA), saying the new facility will enable transformational science across many areas of astrophysics.
The ngVLA will be an array of 263 dish antennas reaching across North America. Both its sensitivity to faint objects and its resolving power — ability to see fine detail — will be 10 times greater than the current VLA. Building on the scientific and technical legacies of the VLA and the Atacama Large Millimeter/submillimeter Array (ALMA), the ngVLA is being designed to provide the next major leap forward in our understanding of planets, galaxies, black holes, and the dynamic sky. The ngVLA’s capabilities will complement those of ALMA and the Square Kilometer Array.
“This welcome and important recommendation promises to continue a longstanding tradition of productive collaboration with our Canadian colleagues,” said NRAO Director Tony Beasley. “Canada’s contributions to the VLA over the years have been quite valuable, and we look forward to an exciting partnership in the coming decades,” Beasley added.
The panel recommended that Canada provide $130 million toward ngVLA construction and $6 million per year for operating the facility. This represents approximately 6 percent of the total budget for the project, and would give Canadian astronomers the same percentage of observing time.
“Like many of my colleagues across the Canadian university community, I am excited to see the recommendation for engagement in the ngVLA. This opportunity builds upon our long partnership with NRAO in radio astronomy. My students and I rely on the diverse capabilities of the Canadian-built correlator system for the current VLA to study the evolution of galaxies. Our scientists and engineers have a lot of new ideas to contribute to the design, construction, and use of the ngVLA, and I look forward to conducting science enabled by their ingenuity,” said Erik Rosolowsky of the University of Alberta.
The ngVLA project currently is under review by the Astronomy and Astrophysics Decadal Survey (Astro2020) of the U.S. National Academy of Sciences. That report is expected in the Spring of 2021. Following that report, the project will need approval by the National Science Foundation’s National Science Board and funding by Congress. Construction could begin by 2025 with early scientific observations starting in 2028 and full scientific operations by 2035.
“Canadians have been valuable partners in developing the scientific and technical approaches of the ngVLA project from the beginning,” said Eric Murphy, NRAO’s Project Scientist for the ngVLA. “They serve on our advisory councils, and we expect that their expertise and leadership will help ensure that the ngVLA will be one of the 21st Century’s primary tools for advancing our knowledge of the universe,” he added.
The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc.
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Media Contact:
Dave Finley, Public Information Officer
(505) 241-9210
[email protected]
This news article was originally published on the NRAO website on February 3, 2021.
Recent News
NSF VLA Contributes Crucial Puzzle Piece to ‘Peculiar’ High Energy Transient
High-energy transient signals are most often determined to be gamma-ray burst events, but the recently-launched Einstein Probe has expanded astronomers’ ability to quickly respond to similar signals occurring at X-ray wavelengths. Now, a multi-wavelength study of EP240408a concludes that while many of the signal’s characteristics might lead to the conclusion that it is a gamma-ray burst, the non-detection at radio wavelengths precludes that possibility.
Students Contribute to New Understanding of ‘Twinkling’ Pulsars
The flexible observing setup of the Green Bank Observatory’s 20-meter telescope enabled frequent, long-duration observations of eight pulsars, spanning two and a half years for a student-driven study carried out by students in the Pulsar Science Collaboratory program.
Double the Disks, Double the Discovery: New Insights into Planet Formation in DF Tau
Tucked away in a star-forming region in the Taurus constellation, a pair of circling stars are displaying some unexpected differences in the circumstellar disks of dust and gas that surround them. A new study led by researchers at Lowell Observatory, combining data from the Atacama Large Millimeter/submillimeter Array (ALMA) and Keck Observatory, has unveiled intriguing findings about planet formation in this binary star system, known as DF Tau, along with other systems in this region.