AGAPE, a microlensing search in the direction of M31: status report

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Publication Type Manuscript
School or College College of Science
Department Physics
Creator Gondolo, Paolo
Other Author Ansari, R.; Aurière, M.; Baillon, P.; Bouquet, A.; Coupinot, G.; Coutures, C.; Ghesquière, C.; Giraud- Héraud, Y.; Hecquet, J.; Kaplan, J.; Le Du, Y.; Melchior, A. L.; Moniez, M.; Picat, J. P.; Soucail, G.
Title AGAPE, a microlensing search in the direction of M31: status report
Date 1995
Description The M31 galaxy in Andromeda is the nearest large galaxy after the Small and Large Magellanic Clouds. It is a giant galaxy, roughly 2 times as large as our Milky Way, and has its own halo. As pointed by some of us [1, 2] and independantly by A. Crotts [3], M31 provides a rich field of stars to search for MACHO's in galactic halos by gravitational microlensing [4]. M31 is a target complementary to the Magellanic Clouds used by the current experiments [5, 6]. It is complementary in that it allows to probe the halo of our galaxy in a direction very different from that of the LMC. Moreover, the fact that M31 has its own halo and is tilted with respect to the line of sight provides a very interesting signature [3] : assuming an approximately spherical halo for M31, the far side of the disk lies behind a larger amount of M31 dark matter, therefore more microlensing events are expected on the far side of the disk. Such an asymmetry could not be faked by variable stars.
Type Text
Publisher World Scientific Publishing
First Page 1
Last Page 5
Subject AGAPE; Andromeda Gravitational Amplification Pixel Experiment; Microlensing; MACHO; Massive compact halo objects
Subject LCSH Andromeda Galaxy; Gravitation; Galactic halos; Dark matter (Astronomy)
Language eng
Bibliographic Citation Ansari, R., Aurière, M., Baillon, P., Bouquet, A., Coupinot, G., Coutures, C., Ghesquière, C., Giraud- Héraud, Y., Gondolo, P., Hecquet, J., Kaplan, J., Le Du, Y., Melchior, A. L., Moniez, M., Picat, J. P., & Soucail, G. (1995). AGAPE, a microlensing search in the direction of M31: status report. The Ddark Side of the Universe: Experimental Efforts and Theoretical Framework, Rome. 1-5.
Rights Management Electronic version of an article published in The Dark Side of the Universe: Experimental Efforts and Theoretical Framework, Rome. 1995, 1-5. Copyright World Scientific Publishing Company, http://www.worldscientific.com/
Format Medium application/pdf
Format Extent 632,077 bytes
Identifier ir-main,9305
ARK ark:/87278/s6b28cg5
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 703443
Reference URL https://collections.lib.utah.edu/ark:/87278/s6b28cg5
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