Kepler-51 is home to three super-swollen exoplanet: Kepler-51 is a 500 million-year-old G-type star located 2,615 light years away in the constellation Cygnus. New observations from the NASA / ESA Hubble Space Telescope showed that the Kepler-51 houses three of the lowest density exoplanets known to date. At a density of less than 0.1 g / cm3, the elevation of the atmospheric scale on these planets is 10 times greater than that of a typical hot Jupiter exoplanet.
Super puffs are several times larger than Earth, planets larger than Neptune and planets of much lower density. First discovered by NASA’s Kepler space telescope, these planets are relatively rare in our galaxy, the Milky Way: so far less than 15 have been discovered. “A trio of Kepler-51 has taken planetary disturbances to new levels,” said Dr. Zachary Berta-Thompson is an astronomer in the Department of Astronomy and Planetary Sciences at the University of Colorado, Boulder.
Kepler-51 is home to three super-swollen exoplanet
Their discovery was directly opposite to what we teach in graduate classes. Also known as KOI-620, Kepler-51 houses three planets the size of Jupiter: Kepler-51B, C and D, with an orbital period of 45, 85 and 130 days. Discovered by Kepler in 2012, these planets are several times larger than Earth’s mass and have a hydrogen / helium atmosphere.
“The three planets had a density of less than 0.1 g / cm3, almost the same as the pink candy bought at any fair,” said Jessica Libby-Roberts, an astrologer and graduate student in the Department of Planetary Sciences. University of Colorado, Boulder. “We knew they were low density. But when you photograph a cotton candy ball in the form of Jupiter, it is really low density. ” This representation shows three massive planets orbiting Kepler-51 compared to some planets in our solar system.
Dr. Berta-Thompson, Libby-Roberts and colleagues saw two transits of the Kepler-51, B with the Hubble 3 wide-field camera. The researchers found no chemical signs in the spectra of both planets. “It was completely unexpected. We had planned to see large water absorption facilities, but they weren’t there. They forced us out,” Libby-Roberts said. However, unlike Earth’s water clouds, clouds on these planets can be formed by salt crystals or photochemical rewards.
Such as those found on Saturn’s largest moon, Titan. These clouds provide scientists with an idea of how Kepler-51, B and D compare to other low mass and gas rich exoplanets. “By comparing the flat spectra of the overpopulations with the spectra of other planets, we could support the hypothesis that the formation of clouds / mists is associated with the temperature of the planet. The colder a planet is, the deeper it becomes”, said.
The low density of these planets is the result of the early age of the system, just 500 million years older than our Sun of 4.6 million years. The models suggest that these planets formed outside the star’s snow line,” areas of possible orbits where frozen matter can escape. After this, the planets went inward. The authors also found that Kepler-51B, C and D flow at high speed. He calculated that if this trend continued.
The planets could be substantially reduced in the next billion years, increasing their frustration. Finally, they can be transmitted as a common class of exoplanets called ‘mini-neptunes’. People are really struggling to discover why this system is so different from everyone else. We are trying to show, in fact, that it looks like these other systems, said Libby-Roberts. Dr. Berta-Thompson said:
A good fact of their rarity is that we are seeing them at a time of their evolution, where we rarely have the opportunity to see planets. The team article will be published in the Astronomical Journal. Super-puffs: new types of exoplanets seen by hubble have the density of cotton candy. This new class of exoplanets has the lowest density of any planet discovered outside of our solar system. When you hear “super puffs.”
NASA-ESA’s Hubble Space Telescope
t’s more like thinking of cheetos, breakfast cereals, or whatever else is super puffy. But a planet in space would not be an unexpected assumption. Okay, we’ll just have to figure out how to make peace with doing it anyway (especially if you’re a space cushion), because “super-puff” is now a newly-discovered category of a unique and rare cotton candy category as well.
This is the first in the field of astrophysics, let alone exoplanets, simply “there is nothing [like them] that exists in our solar system.” Data from NASA-ESA’s Hubble Space Telescope pointed to the heterogeneous chemistry of two of those super-bloated planets, found in the Kepler 51 system. Some 2,400 light-years away from Earth. Consisting of not two but three superpopulations orbiting a young star.
The system was discovered in 2012 by NASA’s Kepler telescope. It was only in 2014 that the densities of these planets were estimated, and what they found was a huge drunken surprise. Super-Puffs: The new class of exoplanets observed by Hubble has a density of cotton candy. An artist’s rendering of the super-bloated exoplanets is compared to cotton candy in appearance as a pedicle.
Recent Hubble observations shed some light on the mass and size of these worlds, on the basis of which several independent research groups have confirmed their “bloated” disposition. To an observer, these planets may look big and heavy like Jupiter, but the reality is that these planets are very, very light (about a hundred times lighter) in mass.
How and why its atmospheres make the balloon remains a mystery!
But the feature makes Super-Puffs the primary target for atmospheric investigations. The research team went looking for evidence of components: water, especially in the atmospheres of the two planets (Kepler-51B and Kepler 51D). Most exoplanets, including the overpopulations in question, are studied using a method called transduction photometry.
In which astronomers search for starlight to detect the intensity of dives as the exoplanet passes by.
A drop in light intensity during this “transit” can reveal a lot of information about the size and structure of the exoplanet. The study was published in The Astronomical Journal. The three pleural planets in the Kepler 51 system are comparable to some of our acquaintances. Researchers have testified that there are light gases, hydrogen and helium.
University of Colorado Boulder
For example, which gives the bloated world something, if not some of its strange characteristics. Methane is also in the mix, creating a layer of gas that obscures the view through the atmosphere when viewed with powerful telescopes. It is similar to Saturn’s moon Titan, which has a dense atmosphere and a fog through which it is impossible to see.
“They are very strange,” said Jessica Libby-Roberts, a graduate student in astrophysics at the University of Colorado Boulder. She sent us off course to explain what might happen here… We were expecting to find water, but we couldn’t see the signature of any molecule.
However, the system is young, compared to our solar system (4.5 billion years old). Which is only 500 million years old, which is considered quite young. It may be too early to compare or speculate on the curious trio of super-puffs. But we can certainly imagine time, which can be like looking and walking in real super-bloat.
Astronomers search for the most distant radio emission source known to date. The source, a quasar, is so far away that its light has taken 13 billion years to reach Earth. Astronomers have discovered and analyzed the most distant radio emission source ever known. The source is what scientists call a radio-noisy quasar, a bright object with powerful jets that emit radio wavelengths.
most distant radio emission source
According to the study, which was published in The Astrophysical Journal, the newly discovered quasar, dubbed P172 + 18, is so far away that light has traveled nearly 13 billion years to reach Earth. Quasars date to a time when the universe was 780 million years old, and researchers say the discovery could help them understand the early universe.
Quasars are very luminous objects at the center of some galaxies and are powered by supermassive black holes. As black holes consume the gas around them, energy is released, making them visible to astronomers even when they are very far away. Artist’s impression of quasar P172 + 18, the most distant radio emission source known to date ESO / M Kornmeiser.
Max Planck Institute for Astronomy in Germany
This is the first time that researchers have been able to identify the telltale signatures of radio jets in a quasar early in the history of the universe. Only 10 percent of quasars have jets that glow at radio frequencies. P172 + 18 is powered by a black hole that is approximately 300 million times larger than the Sun.
Chiara Mazuchelli, a fellow at the European Southern Observatory in Chile, led the discovery together with Eduardo Baados from the Max Planck Institute for Astronomy in Germany. The black hole is consuming matter very rapidly, increasing in mass at one of the highest rates ever observed, Mazuchelli said.
Astronomers believe there is a link between the rapid growth of supermassive black holes and the powerful radio jets seen in quasars like P172 + 18. The jets are believed to be able to disturb the gas around the black hole, increasing the speed to which the gas collapses. Studying radio-noisy quasars can provide insight into how black holes grew so rapidly to their supermassive size in the early universe.
Ultra massive black holes (UMBH)
Big Bang. “As soon as we got the data, we looked at it closely and knew immediately that we had discovered the most distant radio quasar ever known,” Banados said. P172 + 18 was first identified as a distant quasar in the Magellan Telescope at the Las Campanas Observatory in Chile. But researchers believe it may be the first of many found to be a strong radio quasar, perhaps at a even greater cosmological distance.
There is no theoretical upper limit for the mass of a black hole. However, astronomers have noted that ultra massive black holes (UMBH) found in the cores of some galaxies never seem to exceed 10 billion solar masses. Given the amount of time that has elapsed since the Big Bang, we would expect exactly the same rate that we know black holes grow.
Furthermore, recent studies suggest that UMBHs cannot physically move beyond this as they would then begin to disrupt the accretion discs that feed them, suppressing the source of new material. Astronomers have referred to the source galaxy of the rapid radio. Repeat the fast burst of locally large spiral Galaxy radio. It the closest known example to us and only the second repetitive rapid radio source that indicates its location have made sky.
The rapid radio burst as FRB
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.
Very Long Baseline Interferometry (VLBI)
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. 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.
large galaxy spiral
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. This galaxy is only about 7 times longer than the second repeat burst to locate, and 10 times closer than some non-repeated FRB scientists..the researchers noted.
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.
radically different environment
Astronomer of the Joint Institute of the European Research Infrastructure Consortium VLB. This is the closest FRB to Earth, said Dr. 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.
rapid radio burst in a nearby galaxy
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.
radio and optical wavelengths
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.
Gemini and subsequent data analysis
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.
Individual radio bursts
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. Mysterious rapid repetitions of radio bursts detect nearby galaxies.
For the second time, astronomers have detected a repetitive esoteric signal of intense radio bursts and this is in a spiral galaxy similar to ours, not far away. Fast radio bursts, or FRBs, are bursts of radio waves milliseconds long in space. Individual radio bursts emit once and are not repeated. Repeated fast radio bursts have been known to sometimes send energetic small radio waves.
Over the years, many individual fast radio bursts go 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 replicated the FRB was found in 2019, deepening the mystery of the creation of these radio waves. The ghostly shell in this image is a supernova, and the glow emanating from it is a pulsar.
illuminating the nebula
Hidden in one of the darkest corners of the Orion planetarium, this cosmic bat is spreading its misty wings through interstellar space at a distance of two thousand light years. It is illuminated by young stars that inhabit its core despite being surrounded by opaque clouds of dust, its bright rays still illuminating the nebula. Hidden in one of the darkest corners of the Orion planetarium.
This cosmic bat is spreading its misty wings through interstellar space at a distance of two thousand light years. It is illuminated by young stars that inhabit its core despite being surrounded by opaque clouds of dust. Its bright rays still illuminating the nebula. In this illustration, many dust rings surround the sun. These rings are formed when the planets; Gravity digs up dust grains in orbit around the Sun.
The planets transports
Scientists have recently detected a ring of dust in Mercury’s orbit. Others imagine the source of Venus; The dust ring is a group of coorbital asteroids never before identified. In this illustration, many dust rings surround the sun. These rings form when the gravity of the planets transports the dust grains in orbit around the sun. Scientists have recently detected a ring of dust in Mercury’s orbit.
Others look at the source of the Venus Dust Ring, a group of previously identified coorbital asteroids. 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.
the McGill University study
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 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.
American Astronomical Society
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.
Canadian CHIME telescope
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.
galaxy or environment
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.
Repeated rapid bursts of radio were detected by one of the spiral arms of the Milky Way galaxy. It was also within a star-forming arm region, the researchers said. 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.