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Gas giant exoplanet discovered, twice the mass of the Earth: ScienceAlert
A recently suspended exoplanet has puzzled astronomers.
By taking measurements of a very small Jupiter-sized exoplanet called HD-114082b, scientists found that its characteristics do not match either of the two popular models for the formation of gas giant planets.
Simply put, he is too heavy for his age.
“Compared to currently accepted models, HD-114082b is two to three times denser for a young gas giant just 15 million years old,” he said. explains astrophysicist Olga Zakhazy from the Max Planck Institute for Astronomy in Germany.
This exoplanet, orbiting a star called HD-114082 at a distance of about 300 light-years, has been the subject of an intense data collection campaign. At only 15 million years old, HD-114082b is one of the youngest exoplanets ever discovered, and understanding its properties could provide clues to how planets form, a process that is not fully understood.
Two types of data are needed to comprehensively characterize an exoplanet based on its influence on the host star. The transit data is a record of how the light of a star dims when an orbiting exoplanet passes in front of it. If we know how bright the star is, this slight dimming could reveal the exoplanet’s size.
On the other hand, radial velocity data is a record of how much a star wobbles in response to the gravitational pull of the outer planets. If we know the mass of a star, the amplitude of its oscillations can give us the mass of an exoplanet.
For nearly four years, the researchers have been collecting observations of the radial velocity of HD-114082. Using data collected on transit and radial velocity, the researchers determined that HD-114082b has a similar radius. Jupiter – But the mass of Jupiter is 8 times greater. This means that the density of the exoplanet is almost twice that of the Earth, and about 10 times that of Jupiter.
The size and mass of this small exoplanet means it is unlikely to be a very large rocky planet; top borders around it 3 earth radius It’s in 25 earth masses.
Rocky exoplanets also have a very small density band. Above this range the body becomes more intenseAnd the planet’s gravity begins to contain an important atmosphere of hydrogen and helium.
HD-114082b significantly exceeds these parameters, which means it is a gas giant. But astronomers don’t know how it happened.
“We think that the giant planets could have formed in two possible ways.” says astronomer Ralf Lönnhardt mpiya. “Both occur within a protoplanetary disk of gas and dust distributed around a young central star.”
Both methods are called “cold start” or “warm start”. During a cold start, an exoplanet is thought to form, pebble by pebble, from the debris of a disk orbiting a star.
Parts are attracted to each other first electrostatically and then gravitationally. The larger the mass, the faster it grows until it becomes massive enough to cause the runaway accumulation of hydrogen and helium, the two lightest elements in the universe, creating a huge shell of gas around the rocky core.
Given that gases lose heat as they fall towards the planet’s core and form an atmosphere, this is considered a relatively cool option.
Hot start is also known as disk instability and is believed to occur when a swirling region of instability in the disk collapses directly on itself under the force of gravity. As a result, the object is a fully formed exoplanet without a rocky core, as the gases hold more heat.
Exoplanets that experience a cold start or a hot start must cool at different rates, leading to different features that we should observe.
The researchers say the performance of the HD-114082b is not suitable for a hot start model. Its size and mass are more consistent with primary accretion. Even so, he is still quite large for his size. Either it contains an unusual core, or something else is going on.
“It is too early to abandon the idea of a hot start” Lennhardt says🇧🇷 “All we can say is that we still don’t quite understand the formation of giant planets.”
Exoplanets are one of three planets less than 30 million years old for which astronomers have obtained radius and mass measurements. So far, all three seem to be inconsistent with the disk instability model.
Three is clearly too small for the sample size, but three to three indicates that primary accumulation is probably the more common of the two.
“While more planets of this type are needed to confirm this trend, we think theorists need to start rethinking their calculations.” Zahozay says.
“It’s amazing how the results of our observations fit into the theory of planet formation. They help improve our knowledge of how these giant planets grow and tell us where there are gaps in our understanding.”
Research published in astronomy and astrophysics.
NASA Lander InSight He has delivered what may be his last message from Mars as he embarks on a historic mission to uncover the secrets of the Red Planet’s interior.
In November, the space agency warned that the probe could be running out of time as dust continued to condense and stifle InSight’s power.
“Spacecraft power generation continues to decline as windblown dust accumulates on solar panels,” NASA said in a statement. Update November 2. “The end is expected to come in the coming weeks.”
message shared NASA The InSight Twitter account tweeted on Monday: “My power is very low so this might be the last photo I can upload. Don’t worry about me: my time here has been productive and uneventful. If I can keep talking to my mission team, I will—but I will.” Subscribe here soon. Thank you for staying with me.”
My power is very low, so this might be the last photo I can upload. But don’t worry about me: my time here has been productive and uneventful. If I can keep talking to my mission team, I will, but I’ll sign here soon. Thank you for staying with me. pic.twitter.com/wkYKww15kQ
— NASA InSight (@NASAInSight) December 19, 2022
A geologist robot armed with a hammer and a seismograph first reached the barren expanse of Elysium Planitia in November 2018.
Since then, she has carried out geological excavations, taking the first measurements of earthquakes with a high-tech seismometer placed right on the surface of Mars.
Last month, the solar-powered car released an update to remind us of its time in space.
“I was lucky to live on two planets. Four years ago I made it safely to the second one, much to the joy of my family at first. Thanks to my team for taking me on this journey of discovery. I hope I can be proud of you.”
According to the published mission, Insight has measured more than 1,300 seismic events since it was published, and more than 50 of them had signals clear enough for the team to extract information about their location on Mars. Results.
The probe’s data also provided detailed information about Mars’ interior, liquid core, surprisingly variable remnants beneath the surface of an extinct magnetic field, climate and seismic activity.
old for Its launch in 2018NASA Chief Scientist Jim Green said the mission was “fundamental to understanding the origins of our solar system and how it became what it is today.”
NASA will not declare the mission complete until Insight confirms the arrival of two spacecraft orbiting Mars that are relaying their information back to Earth.
In 2018, the veteran rover announced the capabilities end of his 15 year stay Sending an incomplete photo of the Valley of Perseverance.
A severe dust storm darkened the sky around the solar-powered rover, shattering the sun and leaving behind a dark image with white spots due to camera noise. The transmission is interrupted before the complete image can be transmitted.
Being very close companies, OPPO and OnePlus have decided to create a new partnership, with the latter being a pioneer in the market. It has become the representative of the best smartphones in the group, and this will be seen very soon.
Proving this, OnePlus has announced that it will have news soon. The following brand assets will be announced on February 7, 2023. We are talking about OnePlus 11 5G and Buds Pro 2.
In recent years, OnePlus has been showcasing new hardware in an attempt to find a new place in the market. The brand has not always seen its full potential, betting on mid-range or entry-level smartphones.
The situation is changing, and the novelty will go on sale in early 2023, February 7. It is on this day that the new OnePlus 11 5G will be presented with all the expected news. We definitely have the new Qualcomm Snapdragon 8 Gen 2 SoC here. There's still 16GB of storage left and 256GB of onboard storage.
It is expected that he will receive a 6.7-inch OLED display with a resolution of 1440p and a frequency of 120 Hz. In the field of photography, we will have an important change: a 50 MP main camera, a 48 MP ultra wide-angle camera and a 32 MP telephoto lens with 2x zoom. For selfies and video calls, you'll have a 16-megapixel camera.
The photography partnership with Hasselblad will continue with OnePlus for fine-tuning and some additions. This alliance has brought important results for the best smartphones of the brand, guaranteeing the best photos in any situation.
In addition to the new OnePlus 11 5G, another brand new feature is also expected to arrive at the event. We're talking about the Buds Pro 2, which are solidifying an audio commitment that's becoming more of a reality. The brand promises "rich stereo quality sound with crystal clear clarity".
Stays like this marked by the beginning of February, another important novelty will enter the market. OnePlus wants to reclaim its place, and that will be the brand's bet for years to come. OnePlus 11 5G and Buds Pro 2 take the first step in this direction.
According to information provided by Mukul Sharma, the unidentified POCO device can be identified by the model number 22127PC95I. Due to the fact that it was first seen online, the marketing name of this equipment is still a mystery.
POCO has not launched new mobile devices, including smartphones, to the market for some time now. On the other hand, several POCO smartphones such as POKO X5 and X5 Pro have been spotted on various certification sites, suggesting that the company will release these products soon. Today a new smartphone from the sub-brand xiaomi has been spotted on the BIS India website but the device does not have a name or any other details associated with it.
A new POCO device (model number 22127PC95I) has been included in the Indian BIS certification. POCO F5 has the model number 23013PC75I. #A LITTLE pic.twitter.com/NAFloP5Crt
— Mukul Sharma (@stufflistings) December 19, 2022
According to information provided by Mukul Sharma, the unidentified POCO device can be identified by the model number 22127PC95I. Due to the fact that it was first seen online, the marketing name of this equipment is still a mystery. It is possible that it will debut as a mid-range smartphone. The Bureau of Indian Standards (BIS) website, other than the model number of the smartphone, does not provide any additional information about the device. However, this seems to indicate that the product will be available in the Indian market very soon.
In other related news, POCO X5 5G has recently been seen on several certification sites including SIRIM in Malaysia, BIS in India and the US FCC. According to various sources, it is possible that this is a renamed or modified version Redmi Note 12 5Gwhich was recently released in China.
It is supposed to be equipped screen 6.67″ AMOLED display with 120Hz refresh rate and chipset Snapdragon 4 Gen 1 inside. Can run MIUI 13 based on android 12 and have LPDDR4x RAM in addition to UFS 2.2 storage. The front camera is rumored to be 8MP while the main rear camera will be 48MP with 2MP depth. May have the ability drums 5000 mAh and 33W fast charging support.
In addition POCO X5 Pro 5G has recently been seen on various sites dedicated to certification. The battery is said to have a capacity of 5000 mAh and can charge at 67W. It will come with MIUI 14 preinstalled and will support n5, n7, n38, n41, n77 and n78 network bands. 5G.
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