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Simulations of magnetized quark nugget dark matter in three-layer witness plate

Cite this dataset

VanDevender, J. Pace; Schmitt, Robert (2021). Simulations of magnetized quark nugget dark matter in three-layer witness plate [Dataset]. Dryad.


Magnetized quark nuggets (MQNs) are a recently proposed dark-matter candidate consistent with the Standard Model and with Tatsumi’s theory of quark-nugget cores in magnetars. Previous publications have covered their formation in the early universe, aggregation into a broad mass distribution before they can decay by the weak force, interaction with normal matter through their magnetopause, and first observation consistent MQNs: a nearly tangential impact limiting their surface-magnetic-field parameter Bo from Tatsumi’s ~1012+/-1 T to 1.65 × 1012 T +/- 21%. The MQN mass distribution and interaction cross section depend strongly on Bo. Their magnetopause is much larger than their geometric dimensions and can cause sufficient energy deposition to form non-meteorite craters, which are reported approximately annually. We report computer simulations of the MQN energy deposition in water-saturated peat, soft-sediments, and granite and report results from excavating such a crater. Five points of agreement between observations and hydrodynamic simulations of an MQN impact support this seocnd observation consistent with MQN dark matter and suggest a method for qualifying additional MQN events. The results also redundantly constrain Bo to ≥ 4 × 1011 T.


This dataset provides movies of CTH hydrodynamic simulations of a magnetized quark nugget dark matter transiting a three-layer witness plate of peat bog, soft sediments, and granite for energy/length of 1, 3, 9, 27, 81, and 243 MJ/m. The simulations, movies, and photos are explained in the paper titled Results of search for magnetized quark-nugget dark matter from radial impacts on Earth by J. Pace VanDevender, Robert G. Schmitt, Niall McGinley, Aaron P. VanDevender, Peter Wilson, Deborah Dixon, Helen Auer, and Jacquelyn McRae. The paper has been submitted for publication in the open-source journal Universe.


CTH hydrodynamic simulations processed into movies.

Usage notes

Movies of the pressure, temperature, and density from simulaton of a magnetized quark nugget depositing 1, 3, 9, 27, 81, or 243 MJ/m in a three-layer witness plate of water-saturated peat, water saturated soft sediments, and granite. Units are CGS except Temperature is in eV. This simulates the crater and subsurface interations in a May 1985 impact in County Donegal, Ireland.

Each file is names by parameter_energy-density, e.g. Pressure_81MJ_per_meter.