https://safirsoft.com Cosmic indigestion: Swallowing a neutron star can cause a star to explode

The researchers argue that the best way to explain the new observations is with theoretical integration. Many stars exist as part of a multi-star system, and in some cases their orbits are very close. Enter this with the fact that stars can expand with age, and get into a situation where the outer edges of a star can take up to a second. Friction can bring their orbits closer together, causing the cores of both stars to spin into a large bag of plasma.

Everything can get more complicated when you consider that the life cycle of stars isn't necessarily good - one easily explodes before the other, leaving behind a black hole or neutron star. This can lead to some strange circumstances, such as replacing a star with a neutron star core.

Now, researchers say they may have found a stronger alternative to fusion. In this case, the neutron star is not uniformly centered in the core of its companion star. Instead, the star lost its outer layers in space, then saw that its core was so torn that it exploded. J121001 + 495647 was identified by a team that conducted two different radiofrequency sky studies. Basically, they were looking for things that were present during the survey during 2017-2018 and were not there when the same area of ​​the sky was covered in the 1994-2005 survey. The brightest of these was the so-called VT J121001 + 495647 +.

Examination of the hydrogen-release line from the body showed that it was very broad rather than forming a sharp crest. This tells us that the VT J121001 + 495647 has several components. Some of them move towards us and so the light they produce turns blue and broadens the peak in that direction. Another part is moving away from us and thus extending the peak in the red direction. The simplest explanation is that VT J121001 + 495647 blows up the remnants of a star that is expanding in all directions. More precisely, what we see is debris removed from the star before it explodes into material that has already been destroyed, but the researchers calculate that the sum of the mass is already eliminated. The launch must be at least equal to the mass of the Sun, which is a large amount of material - too large to account for by a Sun-like process. So it not only had to be tossed, but it had just been tossed to reach the supernova remnant.

Further confusing the team, the team searched for an unusual event at the same location and came up with one: an X-ray explosion captured by an instrument on the International Space Station. This event was unusual compared to other X-ray bursts, as it was very bright but short and did not reach higher energy wavelengths. This explosion is related to three years before the shooting of the VT J121001+495647+, so it could be a supernova in and of itself. But the duration and energy of this explosion does not match what we usually see from the formation of neutron stars or black holes. There is evidence that the star erupted a lot of material a few years before the explosion, and the timing of the eruption may be related to the X-ray burst. There are several ways to explain this, but most of them don't seem to fit the data well. For example, instability in fusion reactions in a star's core can cause an eruption, but they are large enough to spit out the Sun's minerals in the past few years before the explosion. And if so, it's still closer to where the star is.

Interaction with the companion star can produce an envelope of material of the right density and distance. But they are unlikely to occur near a star exploding.

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Therefore, the researchers suggest an alternative: the output of the material is through interaction with an associated object. Interactions are also the cause of supernovae.

How does this work? The theoretical ideas behind it appear to have been presented in a series of articles in the middle of the last decade. If the companion star had already exploded, it would be in the form of a neutron star or black hole. If it fits inside a normal star envelope, it creates an additional disk and jets. This blows large amounts of material into the star's outer layers, dispersing the material that generates the radio signal. Or a neutron star separates from the star's outer layers and forms a disk of material around it. In the lower plates, the star's core malfunctions, creating a supernova that sends debris into the exhaust gas sooner. "src="https://safirsoft.com/picsbody/2109/9946-1.jpg"alt="https://safirsoft.com Cosmic indigestion: Swallowing a neutron star could cause a star to explode" srcset=" https://cdn.arstechnica. net/wp-content/uploads/2021/09/nrao21df06-infographic-640x352.jpg 2x "> Zoom in/events table. In lower panels, it disrupts the star's core, creating a supernova spewing debris into gas., NRAO/AUI/NSF

The star must have had enough mass to explode at some point anyway, but this perturbation speeded up the process.

Like most things like this, there are some other weird things in the past that could be generated by a similar mechanism.Unfortunately they don't have the data we have for VT J121001+495647+, so the time of the events can't be determined Accurately.But with a good sample of what you're looking for, don't be surprised if we can spot others.

Science, 2021. DOI: 10.1126/science.abg6037 (About DOIs).

Cosmic indigestion: Swallowing a neutron star can cause a star to explode
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