Observational Upper Bound on the Cosmic Abundances of Negative-mass Compact Objects and Ellis Wormholes from the Sloan Digital Sky Survey Quasar Lens Search
Mar 6, 2013Citations per year
Abstract: (IOP)
The latest result in the Sloan Digital Sky Survey Quasar Lens Search (SQLS) has set the first cosmological constraints on negative-mass compact objects and Ellis wormholes. There are no multiple images lensed by the above two exotic objects for ~50, 000 distant quasars in the SQLS data. Therefore, an upper bound is put on the cosmic abundances of these lenses. The number density of negative-mass compact objects is n < 10(–)(8)(10(–)(4)) h (3) Mpc(–)(3) at the mass scale |M| > 10(15)(10(12)) M (☉), which corresponds to the cosmological density parameter |Ω| < 10(–)(4) at the galaxy and cluster mass range |M| = 10(12-15) M (☉). The number density of the Ellis wormhole is n < 10(–)(4) h (3) Mpc(–)(3) for a range of the throat radius a = 10-10(4) pc, which is much smaller than the Einstein ring radius.Note:
- 5 pages, 3 figures, minor changes, some references added, accepted for publication in ApJL
- cosmology: observations
- gravitational lensing: strong
References(47)
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