How to use reionize in a sentence? Find typical usage patterns (collocations)/phrases/context for "reionize" and check conjugation/comparative form for "reionize". Mastering all the usages of "reionize" from sentence examples published by news publications.
It doesn't mean there were enough of them around to reionize the universe.
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Because quasars emit way more ionizing radiation than stars do, they could in theory reionize the universe.
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In a recent paper that appeared in The Astrophysical Journal, Livermore and colleagues also calculated that if you add galaxies like these to the previously known galaxies, then stars should be able to generate enough intense ultraviolet light to reionize the universe.
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In the field of Big Bang theory, and cosmology, reionization is the process that caused the matter in the universe to reionize after the lapse of the "dark ages". Reionization is the second of two major phase transitions of gas in the universe. While the majority of baryonic matter in the universe is in the form of hydrogen and helium, reionization usually refers strictly to the reionization of hydrogen, the element. It's believed that the primordial helium also experienced the same phase of reionization changes, but at different points in the history of the universe.
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The discovery of the trough in a z = 6.28 quasar, and the absence of the trough in quasars detected at redshifts just below z = 6 presented strong evidence for the hydrogen in the universe having undergone a transition from neutral to ionized around z = 6. After recombination, the universe was expected to be neutral, until the first objects in the universe started emitting light and energy which would reionize the surrounding IGM. However, as the scattering cross section of photons with energies near that of the Lyman-alpha limit with neutral hydrogen is very high, even a small fraction of neutral hydrogen will make the optical depth of the IGM high enough to cause the suppression of emission observed. Despite the fact that the ratio of neutral hydrogen to ionized hydrogen may not have been particularly high, the low flux observed past the Lyman-alpha limit indicates that the universe was in the final stages of reionization.
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