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Physics - Cosmic Ringtones in Pulsar Data?


Cosmic Ringtones in Pulsar Data?
January 28, 2021•
Physics 14, 15
A pulsar survey has detected a potential signal from low-frequency gravitational waves, which theorists are eager to explain.
Tonia Klein/NANOGrav
By monitoring the radio flashes from distant pulsars, astronomers have spotted a signal that could be the result of a background of gravitational waves.
Tonia Klein/NANOGrav
By monitoring the radio flashes from distant pulsars, astronomers have spotted a signal that could be the result of a background of gravitational waves.×
Imagine a gravitational-wave detector stretching over a sizeable chunk of our Galaxy. That, in a nutshell, is the North American Nanohertz Observatory for Gravitational Waves (NANOGrav), which monitors distances in our cosmic neighborhood using a network of clock-like stars, called pulsars. In late 2020, the NANOGrav team reported seeing fluctuations in the timing of pulsar ticks, which could be evidence of ....

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Arecibo Observatory will be rebuilt as Puerto Rico commits $8 million to its reconstruction


The Arecibo Observatory collapsed earlier this month, ending its 57 year reign that devastated scientists around the world. 
Puerto Rico Governor Wanda Vázquez has now signed an executive order approving $8 million to help rebuild the renowned telescope.
The order states reconstructing Arecibo is a matter of public policy, along with declaring the observatory site a historic zone. 
The $8 million is set to be used for removing and disposing of the debris and the design of the new telescope.
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The Arecibo Observatory collapsed earlier this month, ending its 57 year reign that devastated scientists around the world ....

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radio telescope, astronomy, legacy


Syra Ortiz-Blanes
Miami Herald/TNS
SAN JUAN, Puerto Rico - The Arecibo Observatory was born in the mid-20th century from a confluence of earthly and celestial forces: William E. Gordon, the scientist who devised the massive radio telescope, wanted to study the Earth s upper atmosphere. The federal defense agency that funded its construction aspired to dominate the technology race against the Soviet Union.
And so, between 1960 and 1963, in an era brimming with the idea of space exploration and Cold War tensions, a radio telescope of power and size never before seen was built in Arecibo, a coastal town in northern Puerto Rico. ....

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