Video Experimental Relacionado
Updated: Jul 5, 2026

11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Resumen
Los astrónomos están de acuerdo en que la acumulación de agujeros negros masivos alimenta a los cuásares. A pesar del debate en curso sobre la física exacta, estos cuásares siguen siendo cruciales para sondear el universo lejano.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Cosmología Cosmología.
Sus antecedentes:
- La primera identificación óptica de una estrella de radio (3C 48) se produjo hace un cuarto de siglo.
- Existe un amplio consenso de que los cuásares son alimentados por la acreción en agujeros negros masivos.
Objetivo del estudio:
- Para explorar los procesos de conversión de energía en quásares.
- Para resaltar la utilidad de los cuásares como sondas cosmológicas.
Principales métodos:
- La astronomía observacional es la astronomía de las observaciones.
- La astrofísica teórica es la astrofísica.
Principales resultados:
- Existe un acuerdo general sobre la fuente de energía fundamental de los cuásares.
- Los mecanismos físicos detallados de la conversión de energía aún están bajo investigación.
Conclusiones:
- La acreción masiva de agujeros negros es la fuente de energía del cuásar aceptada.
- Los cuásares son herramientas valiosas para estudiar el universo temprano y los fenómenos distantes.
Videos de Conceptos Relacionados
Circular Orbits and Critical Velocity for Satellites
The Moon orbits around the Earth. In turn, the Earth (and other planets) orbit the Sun. The space directly above our atmosphere is filled with artificial satellites in orbit. One can examine the circular orbit, the simplest kind of orbit, to understand the relationship between the speed and the period of planets and satellites with respect to their positions and the bodies that they orbit.
Nicolaus Copernicus (1473-1543) first suggested that the Earth and all other planets orbit the Sun in...
Nicolaus Copernicus (1473-1543) first suggested that the Earth and all other planets orbit the Sun in...
Kepler's First Law of Planetary Motion
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. He formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe.
Polish astronomer Nikolaus Copernicus put forth a theory that stated a heliocentric model for the solar system. According to this heliocentric theory, all the planets, including Earth, orbit the Sun in circular orbits.
On the other hand,...
Polish astronomer Nikolaus Copernicus put forth a theory that stated a heliocentric model for the solar system. According to this heliocentric theory, all the planets, including Earth, orbit the Sun in circular orbits.
On the other hand,...
Kepler's Second Law of Planetary Motion
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. His first law states that all planets orbit the Sun in an elliptical orbit, with the Sun at one of the ellipse's foci. Therefore, the distance of a planet from the Sun varies throughout its revolution around the Sun.
While in an elliptical orbit, the total energy of the planet is conserved. Therefore, the planet slows down when it is at apogee and...
While in an elliptical orbit, the total energy of the planet is conserved. Therefore, the planet slows down when it is at apogee and...
Kepler's Third Law of Planetary Motion
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. In 1909, he formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe. However, in 1918, he published his third law of planetary motion, which gives a precise mathematical relationship between a planet's average distance from the Sun and the amount of time it takes to revolve around the Sun. It...
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...
Reduced Mass Coordinates: Isolated Two-body Problem
In classical mechanics, the two-body problem is one of the fundamental problems describing the motion of two interacting bodies under gravity or any other central force. When considering the motion of two bodies, one of the most important concepts is the reduced mass coordinates, a quantity that allows the two-body problem to be solved like a single-body problem. In these circumstances, it is assumed that a single body with reduced mass revolves around another body fixed in a position with an...

