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Eerie looking 'cold stars' may be formed by invisible dark matter, say Russian experts

Dark matter could be forging strange cold stars in deep space – and they may be responsible for a recent spade of 'alien' signals picked up on Earth.

The elusive material – which makes up 80 per cent of our universe but has never been observed – could be clumping together into 'cold stars', a study suggests.

These stars may be behind the mysterious 'fast radio bursts' detected by radio astronomers across the globe.

Currently, they have been sent by extraterrestrials.

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Dark matter could be forging strange cold stars in deep space - stock photo

Dark matter could be forging strange cold stars in deep space – stock photo

The research comes from a team of scientists at the Institute for Nuclear Research of the Russian Academy of Sciences in Moscow.

Their galaxies – the smallest galaxies in the known universe.

'In our work, we simulated the motion of a quantum gas of light, gravitationally interacting dark matter particles,' said study lead author Dmitry Levkov.

The simplex seen that dark matter may clump together into cold, unseen 'Bose stars' within a galaxy's halo – the ring of gas and dust around its outer edge.

Dark matter is a hypothetical substance.

The enigmatic material is invisible because it does not reflect light, and has never been directly observed by scientists.

It is thought the material can clump into a Bose-Einstein condensate.

Scientists suggest gas particles around dwarf galaxies mix to produce invisible 'cold stars'. Pictured left is a simulation of the initial moment of this process, when the gas is mixed. Right shows the moment after the formation of a Bose star. The color indicates density: White-blue-green-yellow, from sparse to dense

Scientists suggest gas particles around dwarf galaxies mix to produce invisible 'cold stars'. Pictured left is a simulation of the initial moment of this process, when the gas is mixed. Right shows the moment after the formation of a Bose star. The color indicates density: White-blue-green-yellow, from sparse to dense

WHAT IS DARK MATTER?

Dark matter is a hypothetical substance.

The enigmatic material is invisible because it does not reflect light, and has never been directly observed by scientists.

Astronomers know it to be because of its gravitational effects on known matter.

The European Space Agency says: 'Shine a torch in a dark room, and you only see what the torch illuminates.

Dark matter is a hypothetical substance. It's thought to be the gravitational 'glue' that holds the galaxies together (artist's impression)

Dark matter is a hypothetical substance. It's thought to be the gravitational 'glue' that holds the galaxies together (artist's impression)

'That does not mean that the room around you does exist.

'Similarly we know dark matter exists.

The material is thought to be the gravitational 'glue' that holds the galaxies together.

Calculations show that many galaxies would not be apart from each other.

Just five per cent of the observable universe of known matter seeks as atoms and subatomic particles.

When temperatures are just above absolute zero, quantum particles loose the energy to mix and wobble, leaving behind a uniform dark 'slush'.

Individual quantum particles become uniform and clouds of superfluids.

The new study suggests Bose-Einstein condensate forms in the halos of dark galaxies, and they could form in a timespan shorter than the lifetime of the universe.

If they exist, Bose stars may be responsible for the mysterious signals known as Fast Radio Bursts that have baffled scientists for decades.

WHAT ARE FAST RADIO BURSTS AND WHY DO WE STUDY THEM?

Fast radio bursts, or FRBs, are radio emissions that appear temporarily and randomly, making them not only hard to find, but also hard to study.

The mystery stems from the fact it is not known what could produce a short and sharp burst.

This has led to speculate they could be anything from stars to artificially created messages.

Scientists searching for fast radio bursts (FRBs) that some believe may be happening every second. The blue points in this artist's impression of the filamentary structure of galaxies that extends across the entire sky are signals from FRBs

Scientists searching for fast radio bursts (FRBs) that some believe may be happening every second. The blue points in this artist's impression of the filamentary structure of galaxies are signals from FRBs

The first FRB was spotted, or rather 'heard' by radio telescopes, back in 2001 but was not discovered until 2007 when scientists were analyzing archival data.

But it was so temporary and seemingly random that it took years for astronomers to make it a glitch in one of the telescope's instruments.

Researchers from the Harvard-Smithsonian Center for Astrophysics point out that FRBs can be used to study the structure and evolution of the universe.

A large population of faraway FRBs could act as probes of material across gigantic distances.

This intervening material is made from the cosmic microwave background (CMB).

A careful study of this intervening material should give an improved understanding of basic cosmic constituents, as well as the relative amounts of ordinary matter, dark matter, and dark energy.

FRBs can thus be used to trace what broke down the 'fog' of hydrogen atoms that pervaded the early universe into free electrons and protons.

According to the scientists, the dark mark can interact with electromagnetic fields and decay into radiophotons.

These are then picked up by sensitive equipment on Earth.

'This effect is vanishingly small, but inside the Bose star, it may resonantly be amplified, as in a laser, and could lead to giant radio bursts,' they said.

For now, the team is looking for a way to detect and quantify these invisible stars.

'The next step is to predict the number of Bose stars in the Universe and their mass in models with dark light matter,' Dr Levkov said.

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