Search for Magnetic Monopoles in Polar Volcanic Rocks

For a broad range of values of magnetic monopole mass and charge, the abundance of monopoles trapped inside Earth would be expected to be enhanced in the mantle beneath the geomagnetic poles. A search for magnetic monopoles was conducted using the signature of an induced persistent current following...

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Bibliographic Details
Published in:Physical Review Letters
Main Authors: Bendtz, K., Milstead, D., Hächler, H. -P., Hirt, A. M., Mermod, P., Michael, P., Sloan, T., Tegner, Christian, Thorarinsson, S. B.
Format: Article in Journal/Newspaper
Language:English
Published: 2013
Subjects:
Antarctic
Arctic
Antarc*
Online Access:https://pure.au.dk/portal/da/publications/search-for-magnetic-monopoles-in-polar-volcanic-rocks(634d7059-3cbf-41ff-a1f8-89dcc63a632a).html
https://doi.org/10.1103/PhysRevLett.110.121803
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Summary:For a broad range of values of magnetic monopole mass and charge, the abundance of monopoles trapped inside Earth would be expected to be enhanced in the mantle beneath the geomagnetic poles. A search for magnetic monopoles was conducted using the signature of an induced persistent current following the passage of igneous rock samples through a SQUID-based magnetometer. A total of 24.6 kg of rocks from various selected sites, among which 23.4 kg are mantle-derived rocks from the Arctic and Antarctic areas, was analyzed. No monopoles were found, and a 90% confidence level upper limit of 9.8 x 10(-5)/g is set on the monopole density in the search samples. DOI:10.1103/PhysRevLett.110.121803

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