Are astronomers seeing a signal from giant black holes?

World-wide radio telescope network strengthens evidence for signal that may hint at ultra-low frequency gravitational waves

Artist’s impression of the IPTA experiment — an array of pulsars around the Earth embedded in a gravitational wave background from supermassive black hole binaries. The signals from the pulsars measured with a network of global radio telescopes are affected by the gravitational waves and allow for the study of the origin of the background. Image by Carl Knox (OxGrav).

An international team of astronomers has discovered what could be the early sign of a background signal arising from supermassive black holes, observed through low-frequency gravitational waves. These scientists are comparing data collected from several instruments, including the National Science Foundation’s Green Bank Telescope (GBT.)

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NASA’s Mars Perseverance rover landing observed by the Green Bank Telescope

NSF/GBO/JPL/NASA/Amber Bonsall

This “waterfall image” is actually three separate observations combined to show NASA’s Mars Perseverance rover as it enters the Martian atmosphere before touching down on the red planet. Green Bank Observatory Data Analyst Amber Bonsall created this image using data received by the Green Bank Telescope (GBT). The GBT was pointed at Mars to observe communications from the rover as it landed February 18th, 2021 at 3:55 p.m. EDT.

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Green Bank Telescope Data a part of Breakthrough Listen’s Most Comprehensive Search to Date

The Robert C. Byrd Green Bank Telescope (GBT) is the worlds largest steerable telescope, standing 485-feet tall, weighing over 17 million pounds, with a 2.3 acre surface.

Reanalysis of Breakthrough Listen Data to Include Other Stellar Objects in the Field Yields Most Comprehensive SETI Search to Date

Independent team combines existing radio telescope data with new catalogs to search over 200 times more stars than before

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COVID-19, and Lightning, Won’t Stop Green Bank Telescope Operations

COVID-19 has changed the way life and works looks for the nation. The National Science Foundation’s (NSF) Green Bank Telescope (GBT) is no different. When a lightning strike from spring storms damaged equipment on the world’s largest fully-steerable radio telescope, staff developed a plan that would allow them to complete repairs safely in a very confined space.

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