“radio-quiet” regionslike the surroundings West Virginia Green Bank Observatoryhard to come by. The spots are of such interest to astronomers that NASA plans to deploy radio telescopes in 2023. all the way on the dark side of the moon just to be quiet enough to do this job in peace.
Caltech may not have plans for the moon, but they’re still pretty excited. The university announced last Thursday the final design specifications to colonize a barren patch of Nevada desert for a radio telescope that promises to explore space 100 times faster than any other known telescope in the world. called the Deep Synoptic Array (DSA), this vast array of 1,650 radio dishes will cover a distance of about 12 to 10 miles (20 to 16 kilometers) and is supported by a supercomputer capable of synthesizing the data stream into extremely sharp images in real time.
But perhaps most impressively, DSA’s space science prize will be free for anyone, scientists and citizen scientists alike, to slice, dice, analyze and use in real time.
“We want the whole world to have access to data as quickly as we do,” said Caltech astronomer Katie Jameson, DSA lead project manager. he explained in a press statement.
High fidelity
The universe is humming with intergalactic radio signals. The rotation of magnetized dead stars, known as pulsars, gives off a steady stream of energy rhythm of radio waves such as electromagneticburps” star-eating black holes and many other cosmic mysteries, including unsolved mysteries of “fast radio bursts”.
Broadly speaking, astronomers and astrophysicists study the radio emissions of these celestial events using two types of radio telescopes. First, there are giant single satellite dishes, à la the He left the Arecibo Observatory aliveIt operated from 1963 until major structural damage in 2020. Second, New Mexico has extensive networks of small bowls, such as very large arrays.VLA), you may have drew attention on Vince Gilligan’s new Apple TV show last year To many. Caltech’s DSA would fall into this latter category—arguably the most maximalist iteration yet attempted.
In addition to DSA’s 1,650 radio dishes, which Caltech describes as “the most dishes that make up a radio array,” the telescope will also synchronize with a supercomputer that can rapidly convert this stream of radio waves into images. This is a complex process, but one common to radio telescope arrays. What makes DSA different is its vertically integrated ability to create these “radio pictures” in real-time. According to Caltech astronomy professor Gregg Hallina, it’s this feature that makes it possible for the project to operate so many radio dishes in general.
“Without the radio camera, we would have had to store 100 exabytes of data (100 billion gigabytes) to complete our survey,” Hallinan said. “That would require 5 million hard drives in a multi-billion dollar facility the size of several football fields.”
Radio “free” universe
Hallinan noted that part of DSA’s hope for making the radio images free without any proprietary delay is that the scientific community and remote members of the public will be interested enough to help analyze them all.
“There will be enough discoveries to keep every radio astronomer on the planet busy,” Hallinan said. “With fully public, science-ready data, some of these discoveries can be made even by a high school student with a smart idea.”
Schmidt SciencesThe philanthropic effort of former Google CEO Eric Schmidt and his wife Wendy, along with Caltech, funded the DSA with an estimated total of cost It is close to 200 million dollars. The expected completion date for the array is 2029, but the Caltech team already placed and prototypes tested across part of California’s Mojave Desert. So Hallinan is confident that the real DSA will be up and running soon.
“While all other radio telescopes combined have found about 20 million radio sources so far, DSA will match that on its first day of operations,” the astronomer said. “By the end of the initial survey, it will have discovered about 1 billion new radio sources.”
