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A network of superconducting gravimeters as a detector of matter with feeble nongravitational coupling
- Source :
- European Physical Journal D
- Publication Year :
- 2020
- Publisher :
- Springer, 2020.
-
Abstract
- Abstract Hidden matter that interacts only gravitationally would oscillate at characteristic frequencies when trapped inside of Earth. For small oscillations near the center of the Earth, these frequencies are around 300 μHz. Additionally, signatures at higher harmonics would appear because of the non-uniformity of Earth’s density. In this work, we use data from a global network of gravimeters of the International Geodynamics and Earth Tide Service (IGETS) to look for these hypothetical trapped objects. We find no evidence for such objects with masses on the order of 1014 kg or greater with an oscillation amplitude of 0.1 re. It may be possible to improve the sensitivity of the search by several orders of magnitude via better understanding of the terrestrial noise sources and more advanced data analysis. Graphical abstract
- Subjects :
- Physics
010308 nuclear & particles physics
Gravimeter
530 Physics
Inner core
Astronomy
Earth tide
Geodynamics
530 Physik
01 natural sciences
Atomic and Molecular Physics, and Optics
Physics::Geophysics
Coupling (physics)
Orders of magnitude (time)
Harmonics
Physics::Space Physics
0103 physical sciences
Astrophysics::Earth and Planetary Astrophysics
010306 general physics
Noise (radio)
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- European Physical Journal D
- Accession number :
- edsair.doi.dedup.....49e715a90d1837c2234923b0d12601ac
- Full Text :
- https://doi.org/10.25358/openscience-5973