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Publications du PCC |  |
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Publications du PCC | |
| HAL: in2p3-00022282, version 1 |
| arXiv: astro-ph/0408204 |
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| XXXIXth Rencontres de Moriond "Exploring the Universe", La Thuile : Italie (2004) |
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| The POINT-AGAPE Microlensing Survey: First Constraint on MACHOs towards M31 |
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| S. Paulin-Henriksson1S. Calchi-Novati |
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| For the AGAPE collaboration(s) |
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| (2004) |
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| To reveal the galactic dark matter in the form of MACHOs ("Massive Astrophysical Compact Halo Objects"), the POINT-AGAPE collaboration is carrying out a search for gravitational microlensing towards M31. A clear microlensing signal is detected. The high-threshold analysis of 3-year data leads to 7 bright and short microlensing candidates. The preliminary estimation of the detection efficiency implies that less than 25% (60%) of standard halos can be composed of objects with masses between 10^{-4} and 10^{-1} (10^{-1} and 1) solar mass at the 95% C.L. This result is compatible with previous microlensing results towards the Magellanic Clouds and gives the first constraints on MACHOs for a distant spiral galaxy. |
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| 1: | PCC - Physique Corpusculaire et Cosmologie - Collège de France |
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| Subject(s) | : | Physics/Astrophysics/Cosmology and Extra-Galactic Astrophysics |
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| Fulltext link: |
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| http://fr.arXiv.org/abs/astro-ph/0408204 |
| in2p3-00022282, version 1 | |
| http://hal.in2p3.fr/in2p3-00022282 | |
| oai:hal.in2p3.fr:in2p3-00022282 | |
| From: Simone Lantz | |
| Submitted on: Tuesday, 12 October 2004 16:17:07 | |
| Updated on: Tuesday, 12 October 2004 16:18:21 | |
