How long it takes for burn-in to occur depends on a few factors, such as brightness and contrast settings, the size of the screen and the image displayed, but it’s likely to take hours before any noticeable discoloration will set in.

Other supermassive black holes are known to emit powerful radiation from their immediate surroundings when their gravitational influence generates turbulent conditions in surrounding gas and dust, forming a structure called an accretion disk. As black holes feed on this matter, the accretion disk emits light that spans the electromagnetic spectrum,  from low-energy radio waves to high-energy gamma-rays.

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As far as burn-in on your smartphone, stationary blocks such as navigation buttons and notification bars are often the main culprits. You may not notice it during normal phone use, but when the full display changes, say to watch a video, you might see a faint impression of where the camera button was — that’s burn-in.

Like we mentioned before, noticing a burned-in image isn’t a cause for immediate alarm. More likely than not, it’s just image retention and the problem will fix itself after a few hours, just make sure to change the screen occasionally or turn it off for a while.

So lately, I have gone through various posts regarding OLED panel burn-In issue in the community and many people are asking for the solution. So in this post, I will cover the whole topic of Screen burn-In issue and Image retention and how you can fix it or make yourself safe from experiencing it.

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Using data from the Fermi Gamma-ray Space Telescope collected between June and December 2022, the researchers aimed to discover the origin of these gamma-rays.

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If you have or plan to purchase a TV or phone with an OLED screen, you can expect exceptional picture and color quality. One thing you may not expect, however, is for remnants of the picture to get “burned” into the display.

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The discovery could give scientists a better understanding of the environments around supermassive black holes, particularly less-ravenous examples, such as the one at the heart of the Milky Way.

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Most smartphones have a screen timeout setting. It’s designed to save battery life more than anything, but it’s also helpful for preventing screen burn-in. Make sure this setting is turned on and set the timeout to 30 seconds or less. If your phone display goes to a screensaver after the display timeout, choose an all-black or moving screensaver to avoid burn-in.

If you notice burn-in on your TV or smartphone’s screen, you have essentially two options: wait to see if it goes away, or use a pixel refresher or an app to fix burn-in.

Avoid leaving your TV on the same channel continuously, especially if there is a static image such as a logo or news feed on the screen. Use a commercial break to flip through the channels and give those pixels a break. Or if your video game has a stationary image, turn the screen off or change to a different input and display every now and then to help keep the image from getting burned-in.

Regular high-energy pulses of gamma-ray radiation emerging from around the Milky Way's central black hole may be coming from a blob of matter whipping around at 30% the speed of light.

Related: Supermassive black hole at the heart of the Milky Way is approaching the cosmic speed limit, dragging space-time along with it

Image retention is the temporary appearance of a ghostly residue of bold static image elements on the screen. This disappears over time when you’re not watching the same content that caused the retention, or when an OLED TV recycles itself when you power it down. Screen burn is permanent (or extremely long term) image retention that never disappears (or that takes weeks or months to disappear).

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Go to your TV or phone’s display settings and make sure brightness isn’t set to max. For TVs with preset picture displays, the vivid or dynamic settings often default to the highest brightness, so you’ll want to adjust the brightness when using those presets. Keep the brightness at 50% or lower to minimize the risk of burn-in.

That's because all black holes are bound by a region called an event horizon, which marks the point beyond which nothing,   not even light,  has the velocity needed to escape the black hole's immense gravity. This means black holes don't emit radiation themselves, so the gamma-rays must be coming from the environment of Sgr A*.

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Something near the supermassive black hole at the heart of the Milky Way has been firing regular blasts of high-energy gamma-rays toward Earth, and scientists may finally know what it is.

The gamma-ray radiation pulses from around Sgr A* were first detected belting Earth in 2021. The team behind the observation knew that the radiation couldn't be coming from within the supermassive black hole  itself, however.

The best way to avoid the distraction of burn-ins is to prevent them from happening to begin with. Here are a few measures you can take to protect your TV or smartphone from burn-ins.

"The coincidence of the multiwavelength periodicity in X-ray and gamma-ray points towards a single physical mechanism that produces it," the team wrote in the paper.

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It is a issue  where persistent exposure to bright, static image elements can ‘wear out’ areas of an OLED screen’s organic materials faster than the rest of the screen, leaving permanent ghostly traces of static image elements behind.

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For burn-in on your phone display, you can try any of the various burn-in “fixer” apps made for Android and iOS devices. Many of these apps are designed to test your phone for burn-in and run a pixel refresh or adjust your display settings so that the burn-in is less visible.

This revelation of what the researchers call a "unique oscillatory physical mechanism" led them to conclude that both the gamma-rays and the X-rays are being emitted by a "blob" of gas that is swirling around Sgr A* at around 30% the speed of light  —  or around 200 million mph (320 million km/h). They think this speeding lump of matter is emitting light across several wavelengths of radiation as it swirls around Sgr A*, flaring periodically as its orbit proceeds.

Robert Lea is a science journalist in the U.K. who specializes in science, space, physics, astronomy, astrophysics, cosmology, quantum mechanics and technology. Rob's articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University

There is it seems to be a connection between image retention and screen burn, to the extent that image elements that cause image retention can lead eventually to screen burn. You could even see image retention as a warning that something you’re watching a lot could eventually lead to screen burn, and so needs to be handled with extra care (more on this later). But the two are not the same in either their cause or the permanency of their effect.

If none of the above works, your best bet is to either replace the screen  yourself or talk to your mobile carrier about a replacement device.

This can't account for the gamma-rays from Sgr A*, however, as the Milky Way's black hole is surrounded by very little matter and is feeding so slowly that it would be equivalent to a human living on a diet of one grain of rice every million years, according to University of Arizona astronomer Chris Impey, who was not involved in the research.

Screenburn in

On your TV screen, burn-in may happen when you leave the TV on a channel with a stationary image such as a logo or news feed, or if you pause the screen and forget to come back to it. Playing a video game with a constant image, such as a scoreboard or heads-up display, can also cause burn-in if you play non-stop for a long time.

In new non-peer-reviewed research posted to the preprint server arXiv, a duo of astrophysicists at the National Autonomous University of Mexico conclude that the bursts of radiation are emanating from a blob of gas spinning around the black hole at almost one-third the speed of light. The team's findings may solve a mystery regarding the Milky Way's central black hole — formally named Sagittarius A* (Sgr A*) and  located around 26,700 light-years from Earth — that has perplexed astronomers for two years .

The duo searched the publicly available Fermi data for patterns of periodicity in the gamma-ray emissions. They found that the pulses emerge from close to Sgr A* roughly once every 76.32 minutes. This period of emission is half the time between pulses of X-ray radiation also seen coming from the vicinity of the Milky Way's supermassive black hole, suggesting the two emissions are in harmony and are likely related.

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