Journal Article

The direct detection of non-baryonic dark matter in the Galaxy?

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 296, issue 1, pages L20-L22
Published in print May 1998 | ISSN: 0035-8711
Published online May 1998 | e-ISSN: 1365-2966 | DOI:
The direct detection of non-baryonic dark matter in the Galaxy?

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It has been argued in a number of recent papers that dark matter is in the form of Jupiter-mass primordial black holes that 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, that 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 d 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.

Keywords: cosmology: observations; dark matter; gravitational lensing.

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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