Gravitational waves are tiny distortions in space -time themselves that are generated when massive objects such as black holes or neutron stars collide. These waves stretch and compress the space as they go through, but the effect is incredibly subtle, far smaller than the width of a proton. When Einstein predicted gravitational waves over a century ago, he probably never imagined that magnets could recognize these gravitational waves one day. However, new research results of Valerie Dommcke of Cern show that magnetic systems can act as exceptionally sensitive gravitational shaft detectors, which offers a new approach to examining some of the most violent events in the universe.
Albert Einstein (loan: Oren Jack Turner)
Traditional gravitational waves such as Ligo use laser interior metrics to measure these tiny changes to the distance. The new research suggests a completely different approach that uses the magnetic fields themselves as sensors. The concept is based on a fascinating physical principle. When a gravitational wave flows through a DC magnetic field (direct current), it fits with the conductive wires that carry the electrical currents that create this magnetic field. This interaction causes the wires to vibrate on the same frequency as the wave of gravity.
These oscillating currents then create an alternating current component (alternating current) that can be measured and analyzed. The magnetic system essentially transforms the spacetime distortion of the gravitational wave into a demonstrable electrical signal. The researchers describe this setup as a kind of resonance mass decorative detector, which is referred to as “Magnetic Weber Bar” and, according to physicist Joseph Weber, who led pioneering wave detection in the 1960s.
Ligo Observatory is a traditional gravitational shaft detector (loan: Ligo Laboratory)
What makes this approach particularly promising is its sensitivity range. The magnetic detectors show an exceptional performance over frequencies that are limited by the mechanical and electromagnetic resonance frequencies of the system. This broad sensitivity could complement existing detectors that are optimized for certain frequency ranges.
The most fascinating creates this discovery an unexpected connection between two state -of -the -art physics fields. The concept works particularly well with powerful magnets that are already used in the search for Axion Dark matter, hypothetical particles that could explain one of the greatest secrets in the universe.
Experiments such as DMRADIO and ADMX-FR use highly developed magnetic systems to search for these difficult-to-tapes of dark matter. The new research results suggest that the same systems could also serve as gravitational shaft detectors and essentially maintain two experiments at the price of one.
The examination of galaxies such as M33 shows the presence of dark matter through the movement of stars in the outer regions (loan: ESO)
This double -possibility is more than just technological efficiency. It shows how progress in an area of fundamental physics unexpectedly can benefit from another and possibly accelerated discoveries in both gravitational wave astronomy and in research of dark matter.
While this research determines the theoretical basis for magnetic gravitational wave detection, the next steps include the experimental demonstration of the concept and the optimization of sensitivity. Since Dark Matter's search tests continue to use powerful magnetic systems, you will soon deliver the first real tests of this innovative identification method.
This convergence of the astronomy of gravitational waves and research for dark matter illustrates how modern physics still reveals unexpected connections between apparently separate phenomena and possibly opens up new opportunities for understanding the most fundamental secrets of our universe.
Source: A new type of detectors could search for gravitational waves with magnets
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