Abstract
We use the distribution, and particularly the skewness, of high redshift type Ia supernovae brightnesses relative to the low redshift sample to constrain the density of macroscopic compact objects (MCOs) in the Universe. The supernova data favor dark matter made of microscopic particles (such as the lightest supersymmetric partner) over MCOs with masses between and at 89% confidence. Future data will greatly improve this limit. Combined with other constraints, MCOs larger than one-tenth the mass of Earth () can be eliminated as the sole constituent of dark matter.
- Received 4 July 2006
- Corrected 20 February 2007
DOI:https://doi.org/10.1103/PhysRevLett.98.071302
©2007 American Physical Society
Corrections
20 February 2007