関連する実験動画
Updated: Jun 10, 2026

08:34
Cryogenic Liquid Jets for High Repetition Rate Discovery Science
Published on: May 9, 2020
二重ブラックホールからの二重ジェット
Carlos Palenzuela1, Luis Lehner, Steven L Liebling
1Canadian Institute for Theoretical Astrophysics, Toronto, Ontario M5S 3H8, Canada.
まとめ
超大質量ブラックホールの合併は,磁場を通してエネルギーを抽出することによって強力なジェットを作り出します. これらのジェットは,周回するブラックホールによって駆動され,遠くの銀河から観測可能な放射を発生させる可能性があります.
科学分野:
- 天体物理学 天体物理学
- 一般相対性理論とは
- プラズマ物理学 プラズマ物理学
背景:
- 銀河の合併は自然に超大質量ブラックホール (SMBH) の合体につながります.
- SMBHの合併は,重力波と高エネルギー電磁気現象の両方を発生させると予想されています.
- サーキュンバイナリーディスクは,合併するSMBHを囲み,磁場を生成すると理論化されています.
研究 の 目的:
- SMBHバイナリ凝結に関連する電磁現象を調査する.
- SMBHの合併における,環二進体ディスクからの外部磁場の役割を調査する.
- SMBHバイナリ凝結中のジェット形成の数値的証拠を提示する.
主な方法:
- ブラックホールとプラズマの相互作用をモデル化するために,アインシュタインの方程式を解く.
- 外部磁場内の二重ブラックホールの凝結をシミュレートする.
- ブランドフォード-ズナジェクメカニズムを二重ブラックホールシステムに拡張する.
主要な成果:
- 数学的証拠は,SMBHバイナリを統合することで強力なジェットを駆動することができると示唆しています.
- 外部磁場は,周回するブラックホールからエネルギーを抽出します.
- このプロセスは,Blandford-Znajekシナリオと一致する合併ブラックホールシステムにつながる.
結論:
- 磁気化された環境におけるSMBHバイナリ融合は,観測可能なジェットを発射することができる.
- これらのジェットは,ブラックホールの合併による遠隔の電磁信号を検出するための潜在的なチャネルを提供します.
- この研究は,SMBHシステムにおけるエネルギー抽出とジェット形成を理解するための理論的枠組みを提供します.
関連する概念動画
Detection of Black Holes
Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
Schwarzschild Radius and Event Horizon
No object with a finite mass can travel faster than the speed of light in a vacuum. This fact has an interesting consequence in the domain of extremely high gravitational fields.
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape velocity with the...
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape velocity with the...
Free Jet
Free jets describe the flow of liquid exiting a reservoir through an opening into the atmosphere without resistance. The velocity (v) of the liquid jet is derived using Bernoulli's principle and expressed as:
Gravitation Between Spherically Symmetric Masses
The gravitational potential energy between two spherically symmetric bodies can be calculated from the masses and the distance between the bodies, assuming that the center of mass is concentrated at the respective centers of the bodies.
Rocket Propulsion in Gravitational Field - II
A rocket's velocity in the presence of a gravitational field is decreased by the amount of force exerted by Earth's gravitational field, which opposes the motion of the rocket. If we consider thrust, that is, the force exerted on a rocket by the exhaust gases, then a rocket's thrust is greater in outer space than in the atmosphere or on a launch pad. In fact, gases are easier to expel in a vacuum.
A rocket's acceleration depends on three major factors, consistent with the equation for the...
A rocket's acceleration depends on three major factors, consistent with the equation for the...
Dual Nature of Electromagnetic (EM) Radiation
Electromagnetic (EM) radiation consists of electric and magnetic field components oscillating in planes perpendicular to each other and mutually perpendicular to radiation propagation through space. EM radiation can be classified as a wave, characterized by the properties of waves such as wavelength (denoted as λ) and frequency (represented by ν).
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the number of...
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the number of...

