Candidate for Mysterious Dark Energy
Institute for Astronomy | University of Hawaii, Mānoa | 2020 Sep 02
Astronomers have known for two decades that the expansion of the universe is accelerating, but the physics of this expansion remains a mystery. Now, a team of researchers at the University of Hawaiʻi at Mānoa have made a novel prediction—the dark energy responsible for this accelerating growth comes from a vast sea of compact objects spread throughout the voids between galaxies. ...
In the mid-1960s, physicists first suggested that stellar collapse should not form true black holes, but should instead form Generic Objects of Dark Energy (GEODEs). Unlike black holes, GEODEs do not ‘break’ Einstein’s equations with singularities. Instead, a spinning layer surrounds a core of dark energy. Viewed from the outside, GEODEs and black holes appear mostly the same, even when the “sounds” of their collisions are measured by gravitational wave observatories.
Because GEODEs mimic black holes, it was assumed they moved through space the same way as black holes. “This becomes a problem if you want to explain the accelerating expansion of the universe,” said ... Kevin Croker ... “Even though we proved last year that GEODEs, in principle, could provide the necessary dark energy, you need lots of old and massive GEODEs. If they moved like black holes, staying close to visible matter, galaxies like our own Milky Way would have been disrupted.” ...
Implications of Symmetry and Pressure in Friedmann Cosmology.
III. Point Sources of Dark Energy that Tend toward Uniformity ~ K. S. Croker, J. Runburg, D. Farrah
- Astrophysical Journal 900(1):57 (2020 Sep 01) DOI: 10.3847/1538-4357/abad2f
II. Stellar Remnant Black Hole Mass Function ~ K. S. Croker, K. A. Nishimura, D. Farrah
- Astrophysical Journal 889(2):115 (2020 Sep 01) DOI: 10.3847/1538-4357/ab5aff
- Astrophysical Journal 882(1):19 (2019 Sep 01) DOI: 10.3847/1538-4357/ab32da
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