Dark stars may exist in the super early universe before the formation of ordinary stars (photon period, seeCosmic chronology）。Most stars are mainly composed of ordinary matter, but dark stars are mainly composed ofNeutral neutrinoConstitute and passdark substanceOfAnnihilationRelease energy.These heat can prevent the dark star from collapsing into an ordinary star under the action of gravity, so the ordinary matter atoms in it will not occurnuclear fusion。
Dark stars are composed of a large grouphydrogenandheliumThe cloud formed in the early universe has a diameter of about 4 to 2000Astronomical unitDue to the low surface temperature, the dark star will only emitinfrared, will not emitvisible light。
observation
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If there are still dark stars in the modern universeGamma ray、neutrinoandAntimatterRelease of, and accompanying cold hydrogenMolecular cloudIt may be possible to detect their existence. Usually, cold hydrogen molecular clouds do not emit such high-energy particles.Astronomer Katherine Fritz said she planned to launch James in 2018·Weber Space TelescopeIt should be able to detect the clues of dark stars.
evolution
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Evolution Path 1:ReionizationPreviously, the temperature of the universe was low, and dark stars may collapse intoblack hole, which can explain why black holes existed in the early universe.
Evolution Path 2: The dark matter of the dark star is consumed, and the remaining ordinary gas collapses into ordinary gasfixed star。
Evolution Path 3: The gas cooling and dark matter heating in the dark star can maintain a balance, allowing the dark star to survive.
Related reports
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In July 2023, astronomers from Colgate University and the University of Texas found evidence of the existence of dark stars based on the data from the James Webb Space Telescope.Relevant research was published in the new issue of Proceedings of the National Academy of Sciences.[1]
