Astronomers have discovered a unique "wrong" neutron star
Source:
About 24 000 light-years from Earth in the constellation Cassiopeia a astronomers have discovered a neutron star, whose existence can not explain none of the modern theories. The fact that the star ejects jets (a very powerful plasma flows moving with incredible speed), but it has a very strong magnetic field. According to modern theories, the ejection of jets from neutron stars is possible only if the strength of their magnetic fields 1000 times smaller than that detected. Discovery scientists described in the journal Nature.
When the life cycle of stars by mass, several times larger than the mass of the Sun coming to an end, they explode in a supernova, leaving a neutron star. These stars are characterized by extreme density and a very powerful force of gravity, while having a very small radius of the order of 10-20 kilometers. Neutron stars, like black holes capable of emitting the jets powerful streams of dispersed almost to light speed particles. Previously it was thought that neutron stars with very strong magnetic field can not create the jet, however the observation of astronomers under the leadership of van den Einden from the University of Amsterdam in the framework of the project ICRAR with a telescope and the VLA shows that this opinion was erroneous.
The Object of the research was the star Swift J0243.6+6124 found in October 2017 the space telescope Swift. It is part of a binary system slowly rotates and draws on material from another companion star, according to the researchers, the much larger size of it of the Sun. The strength of its magnetic field 10 trillion times that of our sun.
While observing the object using the telescope, the VLA, the scientists found that during the pulsations of the star comes not only x-ray, and radio emission. In addition, the brightness of the system in the radio started to wane, when it reaches the high x-ray radiation, and then its decline. Usually this behavior occurs in systems where there is a jet.
Modern theories suggest that the stream is accelerated to high velocities of particles starts by the magnetic field in the inner parts of the accretion disk. However, when a very strong magnetic field of the star, this field will suppress the birth of a jet, not allowing the matter of the disk to the stellar surface. However, the observations of scientists say that probably there are other mechanisms of formation of jets. According to one speculation, the formation of plasma flows may depend on the rotation of the neutron star, not on the strength of the magnetic field in the accretion disk, as is typical of other systems with neutron stars. Scientists believe that slowly rotating neutron stars jet would be weaker. At least, judging from the data of observations, such a feature is observed in the Swift system J0243.6+6124.
According to the researchers, the neutron star Swift J0243.6+6124 may be representative of a whole class of similar objects. However, their radiation is too weak to be seen by scientific instruments of the current generation. Scientists believe that the same VLA will allow us to find other similar systems and to understand that how to form jets from neutron stars.
Discuss the discovery by astronomers .
Recommended
Can genes create the perfect diet for you?
Diet on genotype can be a way out for many, but it still has a lot of questions Don't know what to do to lose weight? DNA tests promise to help you with this. They will be able to develop the most individual diet, because for this they will use the m...
How many extraterrestrial civilizations can exist nearby?
If aliens exist, why don't we "hear" them? In the 12th episode of Cosmos, which aired on December 14, 1980, co-author and host Carl Sagan introduced viewers to the same equation of astronomer Frank Drake. Using it, he calculated the potential number ...
Why does the most poisonous plant in the world cause severe pain?
The pain caused to humans by the Gimpi-gympie plant can drive him crazy Many people consider Australia a very dangerous place full of poisonous creatures. And this is a perfectly correct idea, because this continent literally wants to kill everyone w...
Related News
Scientists develop most detailed 3D model of the human body
Scientists from around the world are trying to create the most detailed history map of the human body. Ideally, the completed 3D model is to show how tissues and organs function and interact with each other at the cellular level. ...
Astronomers have identified the potential home of the first interstellar visitor
Visited in October of last year our Solar system space object, called "Omwamwi" immediately attracted the attention of all the astronomers of the world. The intruder was discovered by an automated telescope Pan-STARRS1. He had a c...
"Junk" DNA can trigger drug addiction
the Human body is designed in such a way that certain substances can cause strong dependence. And, in addition to studied data on the impact of psychostimulants on various neurotransmitters and functions of the Central nervous sys...
To lose weight, just think about it? Why not
due To various reasons some people find it difficult to lose weight, so nutritionists are constantly searching for new methods of weight loss. But what if you can lose weight would be to just by thinking about it? Sounds a bit fan...
Found a safe alternative to chemotherapy
Despite the presence of quite a large number of developments in the field of cancer treatment, many of them have side effects that negatively affect the organism as a whole. So do not stop searching for such treatments that would ...
great Britain, Canada, France, Germany and Italy and the European Union, signed the Charter for the ocean plastic after a meeting of leaders G7 in July. Coca-Cola, Walmart, and other major multinational corporations have agreed to...
Scientists first identified the human bone stem cells
tissue regeneration of bones and joints injuries, and treatment of osteoporosis may become more quick and simple process, thanks to the team at Stanford University discovered a new type of human stem cells, which deliver cells bon...
Video: spectacular crash tests of the electric car Tesla Model 3
Electric car Tesla Model 3, in April 2016, up to 100 km/h in 5.6 seconds. The company intends to increase sales through , so that the increase in the number of owners question about vehicle security becomes more acute. The nationa...
The death of brain cells will stop... spider venom
the basis of some neurodegenerative diseases of the Central nervous system are disorders of the activity of receptors in the brain and if these changes will correct the work and to overcome related diseases. That is what, accordin...
New telescope TESS in two days has discovered two new earth-like exoplanets
a New NASA space telescope TESS, which is used to search for new earth-like exoplanets, is in operation for only two months, but has already provided scientists the first results of their labors. An American Agency reported that t...
It turns out that how we see the image, depends on "where we are"
the Study, conducted by the Fund of fight for sight, showed that how we perceive the image depends on where we are. Professor Matteo Carandini together with scientists from University College London created a virtual environment i...
Over half of the flight to Mars, astronauts will receive more damage than in his entire career
the First flight to Mars would be extremely dangerous to the health of astronauts — no doubt about it. In may 2017, a study on mice showed that members of the first manned mission will be subjected to double the risk of cancer. Ne...
A tiny galaxy nearly collided with the Milky Way. What are the consequences?
History of our galaxy is much more turbulent than previously thought. In the new work, published in Nature this week, astronomers said that hundreds of millions of years ago the milky Way almost collided with another galaxy and it...
Nine strange scientific excuses that people have not yet found aliens
Where are all the aliens? One night, 60 years ago, physicist Enrico Fermi looked into the sky and asked myself: "Where is everybody?", referring to extraterrestrial life. In his opinion the galaxy was literally filled with all sor...
Mosquito larvae learned to eat plastic. Why is that bad?
Plastic with the undoubted advantages like convenience and versatility very badly decomposed. And pollution plastic waste in recent years has become a big problem. Recently a group of researchers from the UK during the study of mo...
Deciphered the structure of a key fragment of HIV which could be the basis for a vaccine
the human immunodeficiency Virus (HIV) has a very complex structure and very high variability and the ability to mutate. This applies to protein, which plays a major role in implantation of the virus into the cell, and starts a de...
The AI will identify dementia according to the results of the conversation
with the exception of some acute conditions, most diseases begin with subtle signs that more and more progress with time. For these and cognitive disorders like dementia. And for quick and timely diagnosis of Japanese scientists h...
Findings of recent studies by NASA have hope for the habitability of Proxima b
In August 2016, astronomers at the European southern Observatory (ESO) confirmed the discovery of earth-like planets in the Proxima Centauri system – the nearest to our Solar system. In addition, scientists announced that the plan...
Which part of our brain responsible for inventing stories?
Despite the relatively good information about the work of the Central nervous system and availability of knowledge about many physiological processes, the data about how and where exactly is the formation of certain functions are ...
Discovered genes that play a key role in the aging process
Any living organism on our planet is influenced by such a process as aging. It is inherent in our nature, but people always wanted to find the cause of this phenomenon and to influence it. The victory over the aging process is not...
Comments (0)
This article has no comment, be the first!