Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-03-06
Astronomy and Astrophysics
Astrophysics
Accepted for publication as a letter in MNRAS, 6 pages of LaTex
Scientific paper
10.1046/j.1365-8711.1998.01594.x
It has been argued in a number of recent papers that dark matter is in the form of Jupiter mass primordial black holes which betray their presence by microlensing quasars. This lensing accounts for a number of characteristic properties of quasar light curves, in both single quasars and gravitationally lensed multiple systems, which are not explained on the basis of intrinsic variation. One prediction of this idea is that Jupiter mass bodies will be detected by the MACHO experiment as short events of about 2 days duration, although the expected frequency of detection is still very hard to estimate. However, the recent report by the MACHO group of the detection of a Jupiter mass body in the direction of the Galactic bulge is consistent with this prediction, and is possibly the first direct detection of non-baryonic matter in the Galaxy.
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