Are there MACHOs in our galactic halo?

Details Are there MACHOs in our galactic halo? Are there MACHOs in our galactic halo?

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..555..146s&link_type=abstract

Cosmology and Particle Physics: CAPP 2000. AIP Conference Proceedings, Volume 555, pp. 146-155 (2001).

Physics

1

Dark Matter, Galactic Halo, Gravitational Lenses And Luminous Arcs

Scientific paper

We present the latest results from the EROS2 galactic dark matter search for microlensing effects towards the Large Magellanic Cloud. 25 million stars have been monitored over three years, and four candidates have been found, which is much lower than expected if MACHOS are a significant component of the galactic dark halo. We combine these new EROS2 results with those from our search towards the Small Magellanic Cloud as well as earlier ones from the EROS1 experiment. The combined data, sensitive to compact objects in the broad mass range 10-7-10 Msolar, allowed us to derived an upper limit on the abundance of stellar mass MACHOS. This combined limit rules out such objects as an important component of the galactic halo if their mass is smaller than a few solar mass. .

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