MACHO Project Limits on Black Hole Dark Matter in the 1–30 [ITAL]M[/ITAL][TINF]⊙[/TINF] Range
Top Cited Papers
Open Access
- 1 April 2001
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 550 (2) , L169-L172
- https://doi.org/10.1086/319636
Abstract
We report on a search for long-duration microlensing events toward the Large Magellanic Cloud. We find none and therefore put limits on the contribution of high-mass objects to the Galactic dark matter. At a 95% confidence level, we exclude objects in the mass range of 0.3-30.0 M☉ from contributing more than 4 × 1011 M☉ to the Galactic halo. Combined with earlier results, this means that objects with masses under 30 M☉ cannot make up the entire dark matter halo if the halo is of typical size. For a typical dark halo, objects with masses under 10 M☉ contribute less than 40% of the dark matter.Keywords
All Related Versions
This publication has 12 references indexed in Scilit:
- The MACHO Project: Microlensing Results from 5.7 Years of Large Magellanic Cloud ObservationsThe Astrophysical Journal, 2000
- EROS and MACHO Combined Limits on Planetary-Mass Dark Matter in the Galactic HaloThe Astrophysical Journal, 1998
- The MACHO Project Large Magellanic Cloud Microlensing Results from the First Two Years and the Nature of the Galactic Dark HaloThe Astrophysical Journal, 1997
- Primordial black hole formation during the QCD epochPhysical Review D, 1997
- The MACHO Project: Limits on Planetary Mass Dark Matter in the Galactic Halo from Gravitational MicrolensingThe Astrophysical Journal, 1996
- Baryonic Dark MatterAnnual Review of Astronomy and Astrophysics, 1994
- Observational limits on Omega in stars, brown dwarfs, and stellar remnants from gravitational microlensingThe Astrophysical Journal, 1994
- Galactic microlensing as a method of detecting massive compact halo objectsThe Astrophysical Journal, 1991
- Cosmological consequences of Population III starsThe Astrophysical Journal, 1984
- Black Holes in the Early UniverseMonthly Notices of the Royal Astronomical Society, 1974