The way spiral galaxies go around suggests that there should be more matter than we can really see , which astronomers think may be dark matter . Almost five decades afterwards , we still have n’t influence out what disconsolate thing is , though . Now the rotation of mini - whorled galaxies might give some raw clues about dark-skinned topic .
In a new study , publish in theMonthly Notices of the Royal Astronomical Society , researchers from SISSA ( The International School for Advanced Studies ) in Italy have calculate at 36 gnome helical galaxies on a wide of the mark compass of luminosities .
These miniskirt - galaxies tell us that there are more interactions between grim thing and ordinary matter than we have thought so far . Dark matter is believed to be composed of sapless interactive massive particle ( WIMPs ) , which have mass and let loose gravity but do n’t interact with other forces .
" Our observations , however , discord with this notion , " say lead generator Ekaterina Karukes in astatement . " If , for a hand mickle , the lambent matter in a galaxy is intimately compacted , so is the gloomy affair . Similarly , if the former is more widespread than in other galaxy , so is the latter . "
The compactness of asterisk map the concentration of dark subject very well , which has never been seen before on such a scurf . The researchers call up that it can be explained away by pick other types of force .
“ These 36 items are the summit of the iceberg of a phenomenon that we will probably notice everywhere and that will help us chance upon what we can not yet see , " co - author Professor Paolo Salucci say .
Their observations only outfit some of the different models of dark matter and none of them fit in theStandard Modelof atom physics , which describes how fundamental particles interact , so there ’s plenty of room for speculation .
It will be interesting to see if this idea of a more interacting dark topic could excuse other extreme galaxies , likeDragonfly 44 . Unlike these wandflower , Dragonfly 44 is made of 99.99 percent iniquity matter , quite the opposite set up to these miniskirt - spirals .
