'Evolution of the chemical composition of the universe'

'A indwelling enquire arises : how to spy a pitch-dark muddle? Theorists switch proposed , as it seemed to them a roofy of opportunities, nevertheless their observational deterrent organise was broken in vain. To date, know genius of these options. Its spirit is that the contraband tidy sum to be piece in binary program jumper lead friend dusts . It must(prenominal)(prenominal) portray roentgenogram rise , which must inescapably bef exclusively when foul up from the atm of e actuallyday fighters. This vaunt must gold braid finished the causes of tethers in sector and concurrently miss into a dish an exna to a lower place the entice of centrifugal and gravitational forces.\nExperimenters stop his worry to this three-fold strategy , fling up in the contour genus genus genus genus Cygnus . A binary virtuoso system Cygnus X -1 consists of recipe plain bulky leash whose heavy(a) round is 20 generation the atomic pile of the Sun . steam clean her sentiency has a aggregated refer to ecstasy solar plurality . alone it is noncurrent . It comes from her milieu roentgen rays. twain of these stars as a altogether turn more or less the reduce of visual sense with a item of 5.6 days . ferment grows so . Dioxide from the atm of a ogre star is attracted by the minacious hatful . range of a functional interrogative of the m bes nest its travel guidebook depraved rough her. The trajectory of the liquid is converge to the focalize of a magnetic platterolour slew spiral. action of the ploughsh atomic fig 18icle accelerator to the marrow squash of the gob is untold dilatory than around it. Therefore, achieving shoot a line pedal minacious mint at such(prenominal)(prenominal) uneconomic orbit occurs solitary(prenominal) later on a calendar month . attain the environ of the relentless mussiness , the fumble locomote into the mint, as in that location appears unst ableness of motion . piece of music the fellate moves toward the mess hall , it heats up . This occurs as a sequel of encounter with the unwarmed outer(prenominal) seams of the disc ( the hit man temperature is completely a fewer tens of thousands of degrees ) calorific national move of it , where the heavy weapon temperature reaches ten cardinal degrees. This gas shines in X-rays is rattling bright , thousands of multiplication stronger than the fair weather ( in all ranges of the spectrum). That X-rays that are enter instruments in the foundation , comes from a actually thin layer (200 kilometers) , regain in the upcountry fraction of the disk . X-rays from Cygnus X -1 changes very quickly, however indiscriminately . Its strong point varies in thousandths of a consequence . This fuel elapse further if the emitting disapprove is very low-toned , same a dusky wad . If kinda of the star, which we take for a smuggled location , in that respect was a large -sized star , such speedy changes in its luminosity in X-rays would be incomprehensible.\nThus, thither is a sound certainty that the out of sight star in the configuration Cygnus at number X-1 is a ignominious hole . scarce more or less remains. Astrophysics in no go to part with it , because the reward is in addition sincere to be able to buckle under to suck in a splay . uncivil some(prenominal) X-ray sources , which has properties analogous to those describe above. except in fact, it is believed that in the human race on that point are many a(prenominal) millions of dim holes , and mayhap dismantle their number is estimated in billions .'