A new direction for dark matter research: intermediate-mass compact halo objects
Abstract
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 > 15M⊙ 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. In conclusion, 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.
- Authors:
-
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Summerheights, Oxford (United Kingdom)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1559922
- Report Number(s):
- LLNL-JRNL-777554
Journal ID: ISSN 1475-7516; 970107; TRN: US2000428
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Cosmology and Astroparticle Physics
- Additional Journal Information:
- Journal Volume: 2016; Journal Issue: 11; Journal ID: ISSN 1475-7516
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; dark matter experiments; dark matter theory
Citation Formats
Chapline, George F., and Frampton, Paul H. A new direction for dark matter research: intermediate-mass compact halo objects. United States: N. p., 2016.
Web. doi:10.1088/1475-7516/2016/11/042.
Chapline, George F., & Frampton, Paul H. A new direction for dark matter research: intermediate-mass compact halo objects. United States. https://doi.org/10.1088/1475-7516/2016/11/042
Chapline, George F., and Frampton, Paul H. Mon .
"A new direction for dark matter research: intermediate-mass compact halo objects". United States. https://doi.org/10.1088/1475-7516/2016/11/042. https://www.osti.gov/servlets/purl/1559922.
@article{osti_1559922,
title = {A new direction for dark matter research: intermediate-mass compact halo objects},
author = {Chapline, George F. and Frampton, Paul H.},
abstractNote = {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 > 15M⊙ 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. In conclusion, 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.},
doi = {10.1088/1475-7516/2016/11/042},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 11,
volume = 2016,
place = {United States},
year = {Mon Nov 21 00:00:00 EST 2016},
month = {Mon Nov 21 00:00:00 EST 2016}
}
Web of Science
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