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How to Make a Black Hole Perfectly Black ⚡ экспресс

Original: "Total absorption of tailored incoming signals by black holes"
arXiv:2509.19451 · 2025-09-23 · CC BY · ⏱ 1 min · General Relativity High Energy HEP Theory Optics
By shaping incoming space ripples, scientists forced a black hole to absorb all energy, rendering it truly black.
Abstract

Scientists have found that by using a special temporal modulation of the incoming signal, they can excite resonances in the complex plane (a mathematical space of frequencies with damping) and achieve complete absorption throughout the scattering time. This makes astrophysical objects like stars and black holes truly black. The energy from this 'virtual absorption' is stored with high efficiency and released later through total transmission modes. Interestingly, in four-dimensional space such modes are limited, while in higher dimensions black holes exhibit a complex structure—as if they acquire a hidden resonant 'architecture'.

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Black holes typically reflect a portion of the ripples in space called gravitational waves—like a bell that doesn't ring purely when struck. Physicists discovered that by precisely shaping these waves to match the black hole's natural resonance, they can make it absorb all the energy, becoming perfectly black and silent during the impact. The energy is stored momentarily.

Then, the black hole releases the energy as a clean, ringing tone. Like the ring of a bell reveals its exact shape, this echo carries detailed information about the black hole's inner structure. Curiously, while in this perfectly absorbing state, the black hole would be completely invisible, detectable only by its gravitational pull on nearby stars. This opens a new way to probe the spacetime curvature around these objects.

🎯 The trick is so delicate that even a tiny mismatch in the wave shape breaks the perfect absorption, causing the black hole to reflect energy again.

🎬 This concept mirrors the 'singularity drives' of science fiction, which store and release energy in controlled bursts.

Scientists
Christian DopplerD. B. McLaughlinDidier QuelozMichel MayorR. A. RossiterStephen Hawking
Tags
black hole gravitational waves spectroscopy spacetime curvature
Laws
Doppler effectHawking radiationgravitational lensingBekenstein-Hawking entropyEinstein field equationsMaxwell's equations
Original: arXiv:2509.19451 · CC BY · bridge42worlds