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MEGA: Microlensing Exploration of the Galaxy and Andromeda

Published online by Cambridge University Press:  26 May 2016

David R. Alves ,
Edward Baltz ,
Arlin Crotts ,
Alex Bergier ,
Patrick Cseresnjes  and
Alan Gersch
David R. Alves
Affiliation:
Columbia Astrophysics Laboratory, 550 W. 120th St., Mailcode 5247, New York, NY 10027, USA
Edward Baltz
Affiliation:
Columbia Astrophysics Laboratory, 550 W. 120th St., Mailcode 5247, New York, NY 10027, USA
Arlin Crotts
Affiliation:
Columbia Astrophysics Laboratory, 550 W. 120th St., Mailcode 5247, New York, NY 10027, USA
Alex Bergier
Affiliation:
Columbia Astrophysics Laboratory, 550 W. 120th St., Mailcode 5247, New York, NY 10027, USA
Patrick Cseresnjes
Affiliation:
Columbia Astrophysics Laboratory, 550 W. 120th St., Mailcode 5247, New York, NY 10027, USA
Alan Gersch
Affiliation:
Columbia Astrophysics Laboratory, 550 W. 120th St., Mailcode 5247, New York, NY 10027, USA

Abstract

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Microlensing surveys have ruled out that the dark halos of the Milky Way and M31 are composed entirely of massive compact halo objects (MACHOs) for a wide range of MACHO masses. We have tried using the Subaru telescope to improve the limit on Moon-mass MACHOs, which is the lowest decade in MACHO mass that can be probed by microlensing. Unfortunately, only a half-night of Subaru data was obtained and this is not enough; at least 2 nights of data are required. the current limit is based on nearly 6 years of observations with smaller telescopes.

Information

Type
Part 4: Lensing
Information
Symposium - International Astronomical Union , Volume 220: Dark Matter in Galaxies , 2004 , pp. 127 - 128
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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