Search for dark-photon dark matter in the SuperMAG geomagnetic field dataset

Fedderke, Michael A.; Graham, Peter W.; Kimball, Derek F. Jackson; Kalia, Saarik

doi:10.1103/physrevd.104.095032

Cited by 20 publications

(65 citation statements)

References 76 publications

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“…It is very similar to the one recently pointed out in Refs. [59,60] for kinetically mixed dark-photon dark matter, which in turn has the same conceptual origin as the signal in the DM Radio experiment [61].…”

Section: Contentsmentioning

confidence: 82%

“…For instance, for a dark-photon mass of m A ∼ 4 × 10 −17 eV, the corresponding smoothed 95%credible upper limit on ε was found in Ref. [59,60] to be ε ∼ 1.4 × 10 −5 . The Earth's geomagnetic field ranges from B 0 ∼ 25-65 µT across its surface, 3 so the rough parametric mapping indicates that a bound in the range g aγ ∼ (4.4-11) × 10 −11 GeV −1 is potentially achievable for m a ∼ 4 × 10 −17 eV.…”

Section: Contentsmentioning

confidence: 85%

“…In addition to demonstrating the existence of this novel signal of axion dark matter, we propose to search for it in a way that is conceptually identical to the approach described in Refs. [59,60], which advanced and applied this technique for dark-photon dark-matter searches: expose a geographically dispersed network of sensitive magnetometers to the ambient magnetic environment at the surface of the Earth, and record the magnetic field as a function of time over long time periods. Using distributed networks of sensors 2 in this fashion carries many advantages (see, e.g., Refs.…”

Section: Contentsmentioning

confidence: 99%

“…This search can make use of the same public database maintained by the SuperMAG Collaboration [75,76] that was previously analyzed in Refs. [59,60]. SuperMAG collates data from hundreds of unshielded three-axis magnetometers that are widely dispersed over the surface of the Earth and that have been measuring geomagnetic activity since the early 1970s with a time resolution (for the relevant dataset) of one minute.…”

Section: Contentsmentioning

confidence: 99%

“…Ignoring for the purposes of this argument that the Earth's magnetic field takes a non-trivial spatial pattern, we can employ the rough parametric signal-amplitude mapping εm A → g aγ B 0 on the existing dark-photon limits set in Ref. [59,60]. For instance, for a dark-photon mass of m A ∼ 4 × 10 −17 eV, the corresponding smoothed 95%credible upper limit on ε was found in Ref.…”

Section: Contentsmentioning

confidence: 99%

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Earth as a transducer for axion dark-matter detection

Arza,

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Graham

et al. 2021

Preprint

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Section: Contentsmentioning

confidence: 82%

Section: Contentsmentioning

confidence: 85%

Section: Contentsmentioning

confidence: 99%

Section: Contentsmentioning

confidence: 99%

Section: Contentsmentioning

confidence: 99%

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Earth as a transducer for axion dark-matter detection

Arza,

Fedderke,

Graham

et al. 2021

Preprint

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What Can a GNOME Do? Search Targets for the Global Network of Optical Magnetometers for Exotic Physics Searches

Afach,

Aybas Tumturk,

Bekker

et al. 2023

Annalen der Physik

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Numerous observations suggest that there exist undiscovered beyond‐the‐standard‐model particles and fields. Because of their unknown nature, these exotic particles and fields could interact with standard model particles in many different ways and assume a variety of possible configurations. Here, an overview of the global network of optical magnetometers for exotic physics searches (GNOME), the ongoing experimental program designed to test a wide range of exotic physics scenarios, is presented. The GNOME experiment utilizes a worldwide network of shielded atomic magnetometers (and, more recently, comagnetometers) to search for spatially and temporally correlated signals due to torques on atomic spins from exotic fields of astrophysical origin. The temporal characteristics of a variety of possible signals currently under investigation such as those from topological defect dark matter (axion‐like particle domain walls), axion‐like particle stars, solitons of complex‐valued scalar fields (Q‐balls), stochastic fluctuations of bosonic dark matter fields, a solar axion‐like particle halo, and bursts of ultralight bosonic fields produced by cataclysmic astrophysical events such as binary black hole mergers are surveyed.

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Curl up with a good B: detecting ultralight dark matter with differential magnetometry

Bloch,

Kalia

2024

J. High Energ. Phys.

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Ultralight dark matter (such as kinetically mixed dark-photon dark matter or axionlike dark matter) can source an oscillating magnetic-field signal at the Earth’s surface, which can be measured by a synchronized array of ground-based magnetometers. The global signal of ultralight dark matter can be robustly predicted for low masses, when the wavelength of the dark matter is larger than the radius of the Earth, λDM ≫ R. However, at higher masses, environmental effects, such as the Schumann resonances, can become relevant, making the global magnetic-field signal B difficult to reliably model. In this work, we show that ∇ × B is robust to global environmental details, and instead only depends on the local dark matter amplitude. We therefore propose to measure the local curl of the magnetic field at the Earth’s surface, as a means for detecting ultralight dark matter with λDM ≲ R. As this measurement requires vertical gradients, it can be done near a hill/mountain. Our measurement scheme not only allows for a robust prediction, but also acts as a background rejection scheme for external noise sources. We show that our technique can be the most sensitive terrestrial probe of dark-photon dark matter for frequencies 10 Hz ≤ $$ {f}_{A^{\prime }} $$ f A ′ ≤ 1 kHz (corresponding to masses 4 × 10−14 eV ≤ $$ {m}_{A^{\prime }} $$ m A ′ ≤ 4 × 10−12 eV). It can also achieve sensitivities to axionlike dark matter comparabe to the CAST helioscope, in the same frequency range.

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Search for dark-photon dark matter in the SuperMAG geomagnetic field dataset

Cited by 20 publications

References 76 publications

Earth as a transducer for axion dark-matter detection

Earth as a transducer for axion dark-matter detection

What Can a GNOME Do? Search Targets for the Global Network of Optical Magnetometers for Exotic Physics Searches

Curl up with a good B: detecting ultralight dark matter with differential magnetometry

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