Astronomers have referred to the source galaxy of the rapid radio , it the closest known example to us and only the second repetitive rapid radio source that indicates its location have made sky
Astronomers have referred to the source galaxy of the rapid radio burst as FRB 180916.J0158 + 65 (abbreviated FRB 180916), which makes it the closest known example to us and only the second repetitive rapid radio source that indicates its location have made sky
This image of the 8 m Gemini North telescope shows the SDSS host galaxy J015800.28 + 654253.0 (center), FRB 180916 (green circle).
Rapid radio bursts (FRB) are mysterious bursts of energy from space. They have a duration of milliseconds and exhibit the characteristic scattering of pulsed radii.
These events emit as much energy in a millisecond as the sun emits in 10,000 years, but physical phenomena that make them unknown.
“There are two types of fast radio bursts: repeaters that flash several times and non-repeaters, unique events,” said Kshitij Aggarwal, a graduate student at the University of West Virginia.
Despite hundreds of records from these mysterious sources, astronomers have only indicated the exact location of four of these explosions. Now there is a fifth: FRB 180916.
“This observation is only the second time scientists determine the location of a rapid radio burst,” said Agarwal.
In June 2019, astronomers used eight telescopes from the European VLBI network to observe FRB 180916, which was originally discovered by the CHIME (Canadian Hydrogen Intensity Mapping Experiment) telescope in British Columbia in 2018.
They detected four bursts of radio, each less than two thousandths of a second.
Using a technique called Very Long Baseline Interferometry (VLBI), they achieved a high enough resolution level to locate these explosions in an area with a separation of approximately 7 light years.
Follow-up observations in Gemini north of 8 m at Mauna Kea in Hawaii, one of the world’s largest optical telescopes, showed that the explosion originated in a massive spiral galaxy in SDSS J015800.28 + 654253.0, There is a large galaxy spiral. Millions of light years from Earth.
“We used an 8-meter Gemini North telescope to take sensitive images that showed diffuse spiral arms similar to galaxies and showed that the source of FRB in one of those arms was in a star-forming region,” said Dr. Srihari Tendulkar, astronomer at McGill University.
“This is a very different environment for a repeated FRB than a dwarf galaxy, in which the first FRB 121102 was discovered.”
Astronomer of the Joint Institute of the European Research Infrastructure Consortium VLB, Dr. “This is the closest FRB to Earth,” said Benito Marcotte.
“Surprisingly, he found himself in a radically different environment than the four previous FRBs, an environment that challenges our ideas about what could be the source of these explosions.”
Scientists hope that more studies will know the circumstances that led to the production of these mysterious transient radio pulses, and some of the unanswered questions they pose.
For example, X-rays or visible light: we have a new opportunity to detect emissions at other wavelengths. And if we did, it would be a major disadvantage for the model, “Dr. Victoria Kaspi is an astrophysicist at McGill University and a key member of the CHIME / FRB collaboration.
Astronomer of the Dutch Institute of Radio Astronomy (ASTRON) and the University of Amsterdam, Drs. Jason Hessels said: “Our goal is to locate more FRBs and ultimately understand their origins.”
These findings were published in the January 9, 2020 issue of the journal Nature.
Rapid observation of radio bursts deepens the astronomical mystery: Astronomers point to the origin of a rapid radio burst that is repeated in a nearby spiral galaxy, challenging theories about the unknown source of these pulses.
Observations with the 8-meter North Gemini Telescope, a program of the NSF’s National Laboratory of Optical Infrared Astronomy Research, have allowed astronomers to determine the location of a rapid radio burst in a nearby galaxy: it is Earth and only the nearest Create familiar examples
The second source of repeated burst to indicate its position in the sky. The source of explosion of radio waves is completely different from the atmosphere observed in previous studies. This discovery challenges researchers’ assumptions about the origins of these already widespread exoglytic events.
An unsolved mystery in astronomy is even more surprising. The source of rapid radio bursts (FRB), the sudden explosion of radio waves in a few thousandths of a second, has remained unknown since its discovery in 2007.
The research, published today in the scientific journal Nature, and presented in the 235th meeting of the American Astronomical Society, has indicated the origin of FRB in an unexpected atmosphere in a nearby spiral galaxy.
Observations with the North Gemini Telescope of the NSF Optical Infrared Astronomy Research Laboratory (OIR Lab) on tautology in Hawaii played an important role in the discovery, which further deepens the nature of these extragalactic pulses.
The sources of FRB and their nature are mysterious: many are exploiting one by one, but very few of them sprout frequently. The recently discovered FRB, identified by the ubiquitous designation FRB 180916.J0158 + 65, is one of only five sources with a precisely known location and only the second source that indicates repeated bursts.
These FRBs are called localized and can be associated with a particular distant galaxy, which allows astronomers to make additional observations that can provide information about the origin of the radio pulse.
“The location of this object is fundamentally different from the FRB repetitions located above, but also from all previously studied FRBs,” explains Kenzie Nimmo, a PhD student at the University of Amsterdam and author of this article.
It blurs the difference between repetitive and non-repetitive rapid radio bursts. It may be that FRBs originate in a large zoo of locations throughout the universe and simply need to observe some specific conditions.
It is required to see the location of FRB 180916.J0158 + 65 in radio and optical wavelengths. FRBs can only be detected by radio telescopes, so radio observation is fundamentally necessary to accurately determine the position of FRBs in the sky. This particular FRB was first discovered by the Canadian CHIME Radio Telescope Array in 2018 .
New research used the European VLBI Network (EVN)  to locate the source, but measuring the precise distance and local atmosphere of the radio source was only possible with optical follow-up observations with the Gemini Northern telescope.
The International Gemini Observatory includes telescopes in the northern and southern hemispheres, which can simultaneously reach the entire night sky.
“We use cameras and spectrographs in the Gemini North telescope,” explains Sriharsh Tendulkar, a postgraduate fellow at McGill University in Montreal. Canada that led to observations of Gemini  and subsequent data analysis. “These observations showed that FRB originates from a spiral arm of the galaxy, in a region that is rapidly forming stars.”
However, the source of FRB 180916.J0158 + 65, which is about 500 million light years from Earth, was unexpected and deepens this astronomical mystery, indicating that FRB cannot be associated with a particular type of galaxy or environment .
“This is the closest FRB to Earth,” explains Benito Marcotte, joint director of the VLB European Research Infrastructure Consortium and lead author of the article on nature.
Surprisingly, he found himself in a different environment from the four previous FRBs, an environment that defies our ideas about what could be the source of the explosion.
The researchers hope that more studies will discover the conditions involved in the production of these mysterious transient radio pulses, and some of the unanswered questions they pose.
Author Jason Hessels, of the Dutch Institute of Radio Astronomy (ASTRON) and the University of Amsterdam, says “our goal is to locate more FRBs and ultimately understand their origins.”
“I am glad to see that the different observation facilities complement each other during such demanding high-priority investigations,” Luke Simmer, board member of Gemini and CEO of NRC-Herzberg, CHEME, also houses a Canadian office.
We are especially honored to make astronomical observations at Maunakia in Hawaii.” The extraordinary observation conditions of this site are important to make such astronomical discoveries.
“Understanding the origins of the FRB will undoubtedly be an exciting challenge for astronomers in the 2020s,” said Chris Davis of the US National Science Foundation. UU., Jemis program officer.
We are confident that Gemini will play an important role, and Gemini seems to have made these critical comments at the beginning of the new decade, says Davis.
- The research was presented in an article in Nature entitled “A source of rapid and repetitive radio burst located in a nearby spiral galaxy.”
- Mysterious repetitions of rapid bursts of radio detect the nearby galaxy
- Astronomers have tracked the signal for an enigmatic repetitive rapid radio burst only a second time, and it is in a spiral galaxy similar to ours, not far away.
- Fast radio bursts, or FRB, are long-lasting millisecond radio waves. Individual radios explode once and then do not return. It is known that repeated rapid radio bursts sometimes send small energetic radio waves.
- Over the years, many individual rapid radio bursts date back to their sources in other galaxies, although they have not yet shed light on what they have created.
- But the first source of this new discovery that the FRB reproduced was found in 2019, which deepens the mystery of the creation of these radio waves.
- The source of the new repetitive FRB, known as 180916.J0158 + 65, was discovered by a global effort of eight geo-based telescopes, which indicated the location in a galaxy half a billion light years away from Earth.
- While it seems incredibly distant, it is seven times closer than other repeated radio bursts and 10 times closer than the non-repeated FRBs that have been detected.
- Mohit Bhardwaj, co-author and doctoral student of the McGill University study, said: “The FRB is the most observed, and we speculate that it could be a more traditional object on the outskirts of our own galaxy.
- However, observations have shown that it is in a relatively close galaxy, so it remains a disconcerting FRB.
- But now enough to be studied with many other telescopes. The study, published Monday in the journal Nature, and its findings were presented at the 235th annual meeting of the American Astronomical Society in Honulu.
The first repetitive rapid radio burst, FRB 121102, was detected associated with a small dwarf galaxy containing stars and metals. Benito Marcotte quoted the lead author of the Joint Institute for VLBI in Europe saying:
“Many of the glimpses we saw earlier repeat that the FRB was born from a very special and extreme position within the very small and dwarf [galaxy]. Of telescopes in the same observatory.
This discovery represented the first piece of the puzzle, but it also raised more questions than it could solve, such as marked and non-repetitive A repetitions was a fundamental difference between the FRB. Now, we have made a second location, repeating the FRB, which challenges our previous ideas about what could be the source of these explosions.
On June 19, 2019, the joint institute repeated rapid radio bursts, which were initially discovered by the Canadian CHIME telescope in 2018. In five hours, the telescopes detected four explosions that lasted less than two seconds.
He used a technique called Very Long Baseline Interferometry to combine the power of the telescope and used it as one to fix the location of the FRB in an area of seven light years.
Astronomers compared someone’s ability to stand on Earth to be able to identify someone on the moon. This new repetitive fast radio burst is not only different from other repeated tracks, but also all the fastest radio bursts are detected.
“The differences between repeated and non-repeated rapid radio bursts are therefore less pronounced, and we believe that these events cannot be associated with a particular type of galaxy or environment,” said Kenzie Nimmo, Co-author and PhD student. from Amsterdam. It could be that FRBs originate in a large zoo of locations throughout the universe and only need to observe certain specific conditions.
Learning more about the Burst host galaxy can expose astronomers to the environment from which it originates and ultimately discover the greatest mystery of what makes them. Since this is closer than the others, astronomers will observe it more in the future.
Understanding fast radio bursts can help astronomers learn more about the universe. The more bursts they can track, the better it will be to be able to use the signal of how they are distributed in the universe.