A case for a baryonic dark halo

Details A case for a baryonic dark halo A case for a baryonic dark halo

1994-10-05

arxiv.org/abs/astro-ph/9410016v1

Phys.Rev.Lett. 74 (1995) 14-17

Astronomy and Astrophysics

Astrophysics

12 pages, latex, Zurich University ZU-TH 18/94 and Pavia University FNT-T 94/21

Scientific paper

10.1103/PhysRevLett.74.14

Recent observations of microlensing events in the Large Magellanic Cloud by the MACHO and EROS collaborations suggest that an important fraction of the galactic halo is in the form of Massive Halo Objects (MHO) with mass $\sim 0.1 M_{\odot}$. We outline a scenario in which dark clusters of MHO with mass $\sim 0.1 M_{\odot}$ and $H_2$ molecular clouds form in the halo at galactocentric distances larger than $\sim$ 10 - 20 kpc, provided baryons are a major constituent of the halo. Possible signatures of our picture are discussed.

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