Scientists have reportedimportant observationsfrom the indirect lighting of the first stars in the universe that they evoke could hint at an of import piece of the puzzle that is blue topic . Dark matter was proposed in the sixty to explicate certain features see in galaxies , and it became key to our sympathy of the universe . However , it has so far elude all our attempts at detect it .
Researchers used the EDGES experiment to observe a fussy tuner sign emitted by the hydrogen gas that surrounded and absorbed the light of the first principal . The signal was almost doubly as strong as the theoretical expectations and , in a newspaper publish inNature , Professor Rennan Barkana point the finger’s breadth at morose subject .
The strength of the sign suggests that the H gas was cooler than expect . Using stock thermodynamics , Barkana argue that to cool down the hydrogen , you need something cool to take away the energy . And that affair could be disconsolate matter .
" I realized that this surprising signal indicates the presence of two actors : the first stars , and dark-skinned topic , " Professor Barkana , who ferment at Tel Aviv University , order in astatement . " The first stars in the universe turn on the radio signal , while the dark thing collided with the ordinary matter and cooled it down . supererogatory - cold material naturally explain the strong radio signaling . "
Assuming that the cause of the chilling is truly dark matter , it is possible to work out some of its properties . Dark matter particles can not move at relativistic speed and they have to be light – about several times the mass of the proton . This latter anticipation conk against the current consensus , which expects saturnine issue particle to be significantly heavier .
This is an exciting upshot of an already exciting serial of reflection , but it should n’t be interpret as a conclusive affirmation on the nature ( or even universe ) of glowering matter . It ’s a head start , a potential new avenue to expose its true nature . Barkana believes that dark affair could create a specific normal in the primordial hydrogen gun observations and that a next - propagation radio lookout like theSquare Kilometer Array(SKA ) could see it .
" Such an watching with the SKA would confirm that the first star indeed let on dark matter , " added Barkana .
sorry matter is trust to be six times more abundant than the regular matter that establish stars , planets , us , and possums . Together with dark energy ( another mysterious component ) , they make up the standard model of cosmology , which has been used to successfully explain many features observed in the Universe .
