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Canadian Telescope Finds 13 More Fast Radio Bursts Including the Second One Ever Seen Repeating

Author: Evan Gough / Source: Universe Today

CHIME consists of four metal

Canadian scientists using the CHIME (Canadian Hydrogen Intensity Mapping Experiment) have detected 13 FRBs (Fast Radio Bursts), including the second-ever repeating one. And they think they’ll find even more.

CHIME is an innovative radio telescope in the Okanagan Valley region in British Columbia, Canada.

It was completed in 2017, and its mission is to act as a kind of time machine. CHIME will help astronomers understand the shape, structure, and fate of the universe by measuring the composition of dark energy.

CHIME’s unique design also makes it well-suited for detecting fast radio bursts.

Fast radio bursts are high-energy events out in space that we detect as a transient pulse of radio waves. They usually only last a few milliseconds. Scientists aren’t sure exactly what their origin is, though it is definitely from outside the Milky Way. Some of the suggested sources are black holes or rapidly-rotating neutron stars.

“We haven’t solved the problem, but it’s several more pieces in the puzzle.”

Tom Landecker, CHIME Team Member, National Research Council

“Until now, there was only one known repeating FRB. Knowing that there is another suggests that there could be more out there. And with more repeaters and more sources available for study, we may be able to understand these cosmic puzzles—where they’re from and what causes them,” said Ingrid Stairs, a member of the CHIME team and an astrophysicist at UBC.

CHIME is situated in a valley in the Okanagan region of BC. The surrounding mountains provide a
CHIME is situated in a valley in the Okanagan region of BC. The surrounding mountains provide a “radio-quiet” setting where stray terrestrial radio signals are kept to a minimum. The setting helps CHUME detect fast radio bursts. Image Credit: CHIME Observatory.

The CHIME observatory has a unique design. Unlike other telescopes, which have moving mounts that allows them to reposition and to study specific objects in space, CHIME is statonary. CHIME sits still while the sky moves overhead. It maps the entire northern hemisphere every day, which means it will likely detect more of these phenomena.

CHIME is made of 1024 adapted cell-phone receivers in four 100 meter semi-cylinders, or “half-pipes”, all working together as one large interferometer. They’re connected to a supercomputer that processes all the data.

Stairs thinks that CHIME will find more repeating FRBs. Once they’re found, other telescopes can examine where they originated from for clues to their nature.

“With CHIME mapping the entire northern hemisphere every day, we’re bound to find more repeaters over time,” said Stairs. “Knowing where they are will enable scientists to point their telescopes at them, creating an opportunity to study these mysterious signals in detail.”

A two-stage super-computer helps CHIME detect fast radio bursts. On the left is the F-Engine, which digitized each radio signal 800 million times per second. The F-Engine processes incoming data at the rate of 13 Terabits per second. (!!!) On the right is the X-Engine. It receives the digital data from the F-Engine and processes. The X-Engine creates
A two-stage super-computer helps CHIME detect fast radio bursts. On the left is the F-Engine, which digitized each radio signal 800 million times per second. The F-Engine processes incoming data…

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