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arXiv · 0806.1707

High Longevity Microlensing Events and Dark Matter Black Holes

Paul H. Frampton
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Abstract

Gravitational microlensing has been employed to identify massive halo objects by their amplification of distant sources; MACHO searches have studied event times $2 h \lesssim t_0 \lesssim 2 y$ corresponding masses in the range $10^{-6} M_{\odot} \lesssim M \lesssim 100 M_{\odot}$. We suggest that larger masses up to $10^6 M_{\odot}$ are also of considerable interest. It has not been excluded that there is a significant number of halo black holes with such high masses as suggested by cosmological entropy considerations and potentially detectable by high longevity microlensing events.

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Paul H. Frampton. 2008-12-27. High Longevity Microlensing Events and Dark Matter Black Holes. https://arxiv.org/abs/0806.1707

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