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Astronomers have discovered a strangely massive black hole in a nearby galaxy

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Astronomers have discovered a strangely massive black hole in a nearby galaxy

ESA / Gaia / DPAC; SDSS

Burako Negro – Leo I.

Astronomers at the University of Texas’ MacDonald Observatory at Austin have discovered an unusually massive black hole at the center of one of the Milky Way’s dwarf satellite galaxies, named Leo I.

This discovery, almost as massive as a black hole in our galaxy, could redefine our understanding of how all galaxies – the building blocks of the universe – evolve. work was published by in a recent issue of the Astrophysical Journal.

The team decided to study Leo I am because of its peculiarity. Unlike most dwarf galaxies orbiting the Milky Way, Leo I does not contain much dark matter.

investigators measured the profile of dark matter Leo I – That is, how the density of dark matter changes from the outer edges of the galaxy towards the center.

They did this by measuring their gravitational attraction towards the stars: the faster the stars move, the more matter is trapped in their orbits. Specifically, the team wanted to know if the density of dark matter is increasing towards the center of the galaxy.

They also wanted to know if their profile would be measured. compatible with previous received using data from old telescopes in combination with computer models.

The team, led by the recent Ph.D. from the University of Texas at Austin, Maria Jose Bustamante, includes astronomers Eva Noyola, Karl Gebhardt and Greg Seimann from the same institution, as well as colleagues from the Max Planck Institute for Extraterrestrial Physics in Germany.

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For their observations, they used a unique instrument called VIRUS-W, mounted on the 2.7-meter Harlan J. Smith telescope located at the MacDonald Observatory.

When the team submitted their augmented data and complex models in a supercomputer at the University of Texas Advanced Computing Center at Austin, got an amazing result.

“Models are screaming that we need a black hole in the center; we really don’t need a lot of dark matter, ”Gebhardt said. “We have a very small galaxy that is falling into the Milky Way, and its black hole is almost as massive as the Milky Way.… The mass ratio is absolutely enormous. The Milky Way dominates; the black hole of Leo I is almost comparable. ” The result is unprecedented.

The researchers said the result was different from previous Leo I studies due to a combination of more accurate data and better simulations on a supercomputer.

Dense central region of the galaxy remained practically unknown in previous studies that focused on the speed of individual stars. Current research has shown that for the few speeds obtained in the past, there was a bias towards lower speeds. This, in turn, reduced the estimated amount of matter trapped in their orbits.

New data are concentrated in the central region and are not subject to this bias. The amount of putative matter trapped in the orbits of stars has skyrocketed.

The discovery could undermine astronomers’ understanding of galactic evolution because “there is no explanation for this type of black hole in dwarf spheroidal galaxies, ”said Bustamante.

The result is even more important because astronomers have used galaxies like Leo I to be classified as galaxies. “dwarf spheroidal galaxy”“20 years ago to understand how dark matter is distributed in galaxies,” added Gebhardt. This new type of black hole fusion is also giving gravitational wave observatories a new signal to watch out for.

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“If the mass of a Leo I black hole is large, that could explain how black holes grow in massive galaxies,” Gebhardt said. This is because over time, as small galaxies like Leo I fall into larger galaxies, the black hole of the smaller galaxy merges with the black hole of the larger galaxy, increasing its mass.

Created by a team from the Institute for Extraterrestrial Physics. Max Planck in Germany, the VIRUS-W is the only device in the world capable of currently performing studies of dark matter profiles of this type.

Noyola noted that many of the dwarf galaxies observed from the southern hemisphere are good candidates, but no telescope in the southern hemisphere is equipped for this. However, the GMT (Giant Magellanic Telescope) currently under construction in Chile was partly designed for this kind of work. The University of Texas at Austin is a Founding Partner of GMT.

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‘My power is really low’: NASA’s Mars Insight rover prepares to launch from the Red Planet

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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.

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What’s new on February 7, 2023

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OnePlus 11 5G Buds Pro 2 evento

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.

OnePlus 11 5G Buds Pro 2 events

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.

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OnePlus 11 5G Buds Pro 2 events

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.

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New POCO Smartphone Seen in Certification May Debut Soon

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New POCO Smartphone Seen in Certification May Debut Soon

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.

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.

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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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