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The Hubble supernova image was taken at three different times.



The Hubble supernova image was taken at three different times.
Extension / On the left is the full Hubble image. On the right, different images of the object with a gravitational lens.

NASA, ESA, STSCI, Wenli Chen, Patrick Kelly

Over the past few decades, we have greatly improved the observation of supernovae as they appear. Orbiting telescopes can now pick up emitted high-energy photons and know their source, allowing other telescopes to make quick observations. Some automated scanning telescopes photographed the same parts of the sky night after night, allowing image analysis programs to identify new light sources.

NASA, ESA, STSCI, Wenli Chen, Patrick Kelly

But sometimes luck does play a role. Such is the case with the 2010 Hubble image, where the image also captured a supernova. But due to gravitational lensing, this event appeared in three different places in Hubble’s field of view. Due to the peculiarities of the work of this lens, all three places were shot differently. once After the star exploded, it allowed researchers to reconstruct the passage of time after the supernova explosion, although it had been observed for more than a decade.

I need three copies

The new work is based on a search in the Hubble archives of old images that capture fleeting events: things that are in some of the photos on the website but not in others. In this case, the researchers specifically looked for events that were modified by gravity. This happens when a massive frontal object warps space in a way that creates a lens effect, bending the path of light coming out of the lens from Earth’s perspective.

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Since gravitational lenses are nowhere near as accurate as the ones we make, they often create strange distortions of background objects or, in many cases, magnify them in multiple places. This seems to be exactly what happened here, as there are three separate images of a short-lived event in Hubble’s field of view. Other images of this region indicate that this place coincides with the galaxy; Analysis of the light from this galaxy indicates a redshift, indicating that we are looking at it as it was over 11 billion years ago.

Given the relative brightness, sudden appearance, and location within the galaxy, this event is likely to be a supernova explosion. At this distance, many of the high-energy photons produced by the supernova were redshifted into the visible spectrum, allowing Hubble to visualize them.

To learn more about the background supernova, the team discovered how the lens works. It was created by a cluster of galaxies called Abell 370, and determining the mass of this cluster allowed us to evaluate the properties of the lens that created it. The resulting lens model showed that there were already four images of the galaxy, but none were magnified enough to be seen; The three visible images were magnified four, six, and eight times.

But the model also indicated that the lens also affects the arrival time of the light. Gravitational lenses direct light along paths between the source and the observer of varying lengths. And since light travels at a constant speed, these different lengths mean it takes different times for light to get here. In our usual conditions, this imperceptibly small difference. But on a cosmic scale, it matters a lot.

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Again, using the lens model, the researchers estimated possible delays. Compared to the oldest image, the first and second images were delayed by 2.4 days, and the third by 7.7 days, with an error of about 1 day in all estimates. In other words, one image of the area gave, in fact, a time band of several days.

What was it

When comparing the Hubble data to the various classes of supernovae we have captured in the modern universe, they are likely caused by the explosion of a red or blue giant star. The detailed characteristics of the event are best suited for a red giant, which was about 500 times the size of the Sun at the time of the explosion.

The intensity of light at different wavelengths indicates the temperature of the explosion. The first image shows that it was about 100,000 K, indicating that we were looking at it only six hours after the explosion. The last lens image shows that the debris has already cooled to 10,000 K in the eight days between two different images.

Of course, there are newer and closer supernovae that we can study in more detail if we want to understand the processes that lead to the explosion of a massive star. If we can find more supernovae of this type in the distant past, we can infer the number of stars that existed earlier in the history of the universe. But so far this is only the second time we’ve found it. The authors of the article they describe are trying to draw some conclusions, but it is clear that these conclusions are associated with a high degree of uncertainty.

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So in many ways it doesn’t help us make much headway in our understanding of the universe. But as an example of the strange consequences of the forces that govern the behavior of the universe, he is striking.

hot temper2022. DPI: 10.1038/s41586-022-05252-5 (About DOI).

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



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.

— 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



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



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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