Monday , May 10 2021

Canadian Telescope picks up 13 faster radio alarms, repeating it repeatedly



Canadian scientists have been detecting 13 FRB (Fast Radio Bursts) by using CHIME (Canadian Hydrogen-Intensive Cartography Experiment), repeating it for the second time. And they think they will find more.

CHIME is an innovative radio telescope in Okanagan Valley, British Columbia, Canada. It was finished in 2017 and its mission is like time machine. CHIME astronomers will understand the shape, structure, and destiny of the universe by measuring dark energy composition.

The CHIME special design is also suitable for rapid detection of the radio station.

Rapid radio stations are a great energy event in the space we detected as transitory pulse of radio waves. They usually last a few milliseconds. Scientists are unaware of what origin is, especially when the Milky Way is away. Suggested sources are turning black holes or neutral stars rapidly.

"We do not solve the problem, but there are several more pieces in the puzzle."

Tom Landecker, member of CHIME, National Research Council

"Until now, it has not been known to repeat the FRB, but knowing that there is more to it. And with more repetition and more sources of analysis, we can understand the cosmic puzzles where they are and what they cause," said Ingrid Ladders, CHIME group member and UBC astrophysics.

CHIME is located in the Okanagan region. They give the surrounding mountains
CHIME is located in the Okanagan region. The surrounding mountains provide a "radio silent" setting where terrestrial radio signals are far away. Settings CHUME helps you detect rapid burst noise. Image Credit: CHIME Observatory.

CHIME Observatory has a unique design. Unlike other mobile telescopes, the CHIME statistic is the one that places space for specific objects and places them in space. CHIME still sits while the sky moves. It maps the entire Northern Hemisphere every day, which means that they perceive more of these phenomena.

CHIME is made up of 1024 adapted mobile receivers, half-cylinders of four-meter 100-meter, or "semi-pipes", which work together with one of the largest interferometers. All data is connected to a supercomputer that processes it.

The ladder thinks CHIME will repeat more. Once discovered, other telescopes may be able to analyze their origin to their origin.

"CHIME updates the whole hemisphere with the northern map every day, we find more repetition over time," said Stairs. "It will allow the scientists to know where they are in order to point out their telescopes, with these details being able to explore these mysterious signs."

Two stages make super-fast computer CHIME radio-detecting fast. The left is F-Engine, which has digitized every 800 million times per second radio signal. F-Engine processes incoming data for 13 terabits per second. (!) It's the X-Engine on the right. F-Engine and process digital data. Creates X-Engine
Two stages make super-fast computer CHIME radio-detecting fast. The left is F-Engine, which has digitized every 800 million times per second radio signal. F-Engine processes incoming data for 13 terabits per second. (!) It's the X-Engine on the right. F-Engine and process digital data. X-Engine generates "correlation matrices" for a few seconds, after processing them on the celestial maps. Image Credit: CHIME.

The origins of radio stations are not known yet. Some scientists suggest cataclysmic events, it seems that deleting FRB repetitions is eliminating this idea.

"We are very pleased when CHIME is doing it with full capacity."


Deborah Good, UBC PhD student, member of the CHIME FRB team.

The rare FRB makes learning difficult. They are very variable, and only a few milliseconds last. It's exciting about this finding that CHIME is not yet fully operational. Running at high speed will know more and more, perhaps every day operation, and data floods will open this intriguing phenomenon.

Credit: NRAO Outreach / T. Jarrett (IPAC / Caltech); B. Saxton, NRAO / AUI / NSF

"We are very pleased when CHIME is doing it with full abilities," said Deborah Good, physics and astronomy, at the UBC, a member of the CHEM FRB team. "At the end of the year we found more than 1,000 explosions. Our data will open some mysteries of FRB."

The first FRB was discovered in 2007 through the pulse data scientists. The fastest radio station is short and they stop immediately, and now they disappear, even though this new CHIME discovery has now been repeated twice. The first repeat called FRB 121102 was detected in 2012 and its source was extragalactic in the direction of the constellation Auriga.

What does Waves mean about Rapid Radio Burst?

The FRB's waves can help scientists understand where they came from, and have been able to find out how they were. But longer wavelengths FRB says more.

"FRB environments have a much greater influence on the shape of signals in long waves".

Deborah Good, UBC / CHIME

While most of the earlier radio stations were detected in low-wavelength waves, the latter ranged from wavelengths of just a few meters. It's a bonus for the CHIME team, saying that wavelengths open up new lines of research.

"The FRB environment is much more in the form of signals in long waves," said Good. "Seeing these explosions on CHIME will give us a good idea of ​​the FRB's and where it's coming from, how much brightness is changing in different frequencies and what's going on in the way to Earth." .

CHILD team members Tom Landecker, the National Research Council, will be able to solve these fast radio stations that have recently been detected, at the end of the day when the FRBs are created.

"[We now know] The sources can generate low-frequency radio waves and low-frequency waves can escape the environment and are scattered when they can not be seen when they arrive. They tell us about the surroundings and the sources. We have not solved the problem, but there are several more pieces in the puzzle, "he said.

Four other views of CHIME
Another view of CHIME's four half pipes and 1024 sills. The telescope does not move as much as the whole northern sky overlooks while it passes. Not a quick radio explosion can escape the detection! Image: CHIME.

When you find a radio station or a phenomenon of unknown origins, the Internet talks about aliens and extraterrestrial intelligentsia. We can not help ourselves. But in most cases, and probably even this, there is a natural explanation. Scientists have not yet found.

But when they find the FRB feed, CHIME has a role in paper.

CHIME was only in the phase of its launch when it detected these explosions. He was not acting in full capacity. Once, it will be interesting, especially if you can quickly detect 1,000 radio stations, as it suggests.

"The discoveries are just the beginning of the discoveries of CHIME", add Stairs, UBC astrophysics. "In the next phase, we want to get a full-resolution high-resolution data, better understanding of the brighter explosion, positions, characteristics and magnetic environments, which will be very exciting next year."

The fastest radio detection event was presented at a meeting of the American Astronomical Society during a winter meeting.

These new findings have also been presented in two scientific articles, published in Nature, on January 9, 2019. The first articles "
Radio radio observation frequencies up to 400 megahertz. "The second" is a second source without repetition of the fast solution. "

Sources:


Source link