A new direction for dark matter research: intermediate-mass compact halo objects

Chapline, George F.

doi:10.1088/1475-7516/2016/11/042

Title: A new direction for dark matter research: intermediate-mass compact halo objects

Journal Article · Tue Nov 01 00:00:00 EDT 2016 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2016/11/042· OSTI ID:22679395

Chapline, George F. ^[1]

Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, CA (United States)

The failure to find evidence for elementary particles that could serve as the constituents of dark matter brings to mind suggestions that dark matter might consist of massive compact objects (MACHOs). In particular, it has recently been argued that MACHOs with masses > 15 M {sub ⊙} may have been prolifically produced at the onset of the big bang. Although a variety of astrophysical signatures for primordial MACHOs with masses in this range have been discussed in the literature, we favor a strategy that uses the potential for magnification of stars outside our galaxy due to gravitational microlensing of these stars by MACHOs in the halo of our galaxy. We point out that the effect of the motion of the Earth on the shape of the micro-lensing brightening curves provides a promising approach to testing over the course of next several years the hypothesis that dark matter consists of massive compact objects.

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OSTI ID:: 22679395

Journal Information:: Journal of Cosmology and Astroparticle Physics, Vol. 2016, Issue 11; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516

Country of Publication:: United States

Language:: English

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LSST: from Science Drivers to Reference Design and Anticipated Data Products Ivezić, Željko; Kahn, Steven M.; Tyson, J. Anthony arXiv https://doi.org/10.48550/arxiv.0805.2366	text	January 2008
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Sensitivity of primordial black hole abundance on the reheating phase Cai, Rong-Gen; Liu, Tong-Bo; Wang, Shao-Jiang Physical Review D, Vol. 98, Issue 4 https://doi.org/10.1103/physrevd.98.043538	journal	August 2018
On the origin and nature of dark matter Frampton, P. H. International Journal of Modern Physics A, Vol. 33, Issue 32 https://doi.org/10.1142/s0217751x18300302	journal	November 2018
PBH abundance from random Gaussian curvature perturbations and a local density threshold Yoo, Chul-Moon; Harada, Tomohiro; Garriga, Jaume arXiv https://doi.org/10.48550/arxiv.1805.03946	text	January 2018
Dark Matter Gravity Waves at LIGO and LISA Frampton, Paul H. arXiv https://doi.org/10.48550/arxiv.1812.01468	text	January 2018
Does CMB Distortion Disfavour Intermediate Mass Dark Matter? Corianò, Claudio; Frampton, Paul H. arXiv https://doi.org/10.48550/arxiv.2012.13821	preprint	January 2020
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