Could scientists have finally spotted a signal from dark matter — the elusive , theoretic substance that ’s think to make up much of the creation ? After laboriously scouring through decade - ray information pull in from one of the European Space Agency ’s scope , astronomers spotted a weirdspikein emissions that ca n’t be explained by any screw particle or particle , leading the team to think that it may have come from black matter . The piece of work will be release next calendar week inPhysical Review Letters , but you could read a preprint versionhere .
Dark matteris a secret meat that ’s evade astronomers for tenner . It ca n’t be directly observed because it does n’t absorb or emit light , hence the name . scientist have only been able to guess its world because it seems to exert gravitative upshot on normal , seeable matter .
When scientist observe the focal ratio at which galaxies are rotating , they are face up with something strange : They are spin so tight that they should have been ripped aside long ago because the gravitational force develop by observable affair is insufficient to glue them together . That ’s why scientiststhinksomething invisible is giving them that extra gravity they need to remain entire . These observations have run uranologist to judge that the dark stuff could make up as much as80%of all matter in the universe .
While scientist have never managed to detect or mensurate dark thing , fresh gathered observation suggest we may in conclusion have sometangible evidencefor its universe . The datum came from the ESA ’s XMM - Newton space vehicle , which was analyzed by an external team of investigator . After scour through one thousand of signal , they spotted a uncanny spindle in X - ray emission follow from two unlike spots in the universe : the Andromeda galaxy and the Perseus galaxy cluster . The signaldoesn’t correspondto any be intimate particle or particle , and isunlikelyto be the result of a measuring or official document mistake , which is why , invitingly , the team thinks it could have been give rise by a non-white matter particle .
“ The signal ’s distribution within the galaxy corresponds precisely to what we were expecting with drab matter , that is , concentrated and intense in the centre of target and weaker and pervade on the sharpness , ” study author Oleg Ruchayskiy said in anews loss .
“ With the goal of aver our findings , we then looked at data from our own wandflower , the Milky Way , and made the same observations , ” added conscientious objector - author Alexey Boyarsky .
The researchers think that the signal could have follow from the devastation of a dark issue candidate speck , possibly thehypothetical sterile neutrino . That ’s because it is believed the decay of these particles , which are cousins of negatron - like particles promise neutrino , could raise X - ray .
If scientist can confirm this find , theteam believesit could goad a newfangled epoch in astronomy , and may lead to the development of telescopes specially designed for analyze signal coming from obscure thing particle .
“ We will know where to expect to trace dark body structure in space and will be capable to reconstruct how the universe has formed , ” added Boyarsky .
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[ ViaEcole Polytechnique Fédérale de LausanneandSpace.com ]
