Microlensing events from galactic globular clusters

Details Microlensing events from galactic globular clusters Microlensing events from galactic globular clusters

2010-01-11

arxiv.org/abs/1001.1634v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

3 pages, to appear in the proceedings of the MG12 conference (Paris, July 2009)

Scientific paper

We present an analysis of the large set of microlensing events detected so far toward the Galactic center with the purpose of investigating whether some of the dark lenses are located in Galactic globular clusters. We find that in four cases some events might indeed be due to lenses located in the globular clusters themselves. We also give a rough estimate for the average lens mass of the events being highly aligned with Galactic globular cluster centers and find that, under reasonable assumptions, the deflectors could most probably be either brown dwarfs, M-stars or stellar remnants.

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