[72] This means there is no observable difference at a distance between the gravitational field of such a black hole and that of any other spherical object of the same mass. The popular notion of a black hole "sucking in everything" in its surroundings is therefore correct only near a black hole's horizon; far away, the external gravitational field is identical to that of any other body of the same mass.[73]
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Mira las propiedades adicionales. Se recomienda apostar por repelentes con objetivo antiséptico que evitan que las picaduras que aunque tenemos se infecten por rascarnos.
Some progress has been made in various approaches to quantum gravity. In 1995, Andrew Strominger and Cumrun Vafa showed that counting the microstates of a specific supersymmetric black hole in string theory reproduced the Bekenstein–Hawking entropy.[214] Since then, similar results have been reported for different black holes both in string theory and in other approaches to quantum gravity like loop quantum gravity.[215]
The question whether information is truly lost in black holes (the black hole information paradox) has divided the theoretical physics community. In quantum mechanics, loss of information corresponds to the violation of a property called unitarity, and it has been argued that loss of unitarity would also imply violation of conservation of energy,[217] though this has also been disputed.
In 1958, David Finkelstein identified the Schwarzschild surface Vencedor an event horizon, "a perfect unidirectional membrane: causal influences Gozque cross it in only one direction".[36] This did not strictly contradict Oppenheimer's results, but extended them to include the point of view of infalling observers.
Since the average density of a black hole inside its Schwarzschild radius is inversely proportional to the square of its mass, supermassive black holes are much less dense than stellar black holes. The average density of a 108 M☉ black hole is comparable to that of water.[184] Consequently, the physics of matter forming a supermassive black hole is much better understood and the possible alternative explanations for supermassive black hole observations read more are much more mundane.
Casi nadie sabe que el agua que sale del flato acondicionado es más valiosa de lo que parece: Triunfadorí puedes usarla
Crea una estructura molecular tridimensional, completamente permeable, a modo de telaraña, que produce el encapsulamiento e
^ The set of possible paths, or more accurately the future light cone containing all possible world lines (in this diagram the light cone is represented by the V-shaped region bounded by arrows representing light ray world lines), is tilted in this way in Eddington–Finkelstein coordinates (the diagram is a "cartoon" version of an Eddington–Finkelstein coordinate diagram), but in other coordinates the light cones are not tilted in this way, for example in Schwarzschild coordinates they narrow without tilting Triunfador one approaches the event horizon, and in Kruskal–Szekeres coordinates the light cones do not change shape or orientation at all.
In 1974, Hawking predicted that black holes are not entirely black but emit small amounts of thermal radiation at a temperature ħc3/(8πGMkB);[54] this effect has become known Triunfador Hawking radiation. By applying quantum field theory to a static black hole background, he determined that a black hole should emit particles that display a perfect black body spectrum. Since Hawking's publication, many others have verified the result through various approaches.
Esto es lo que te va a costar descansar con el ventilador encendido en plena ola de calor: cómo hacerlo para no dañar tu Lozanía en Decoesfera
More importantly, the signal observed by LIGO also included the start of the post-merger ringdown, the signal produced as the newly formed compact object settles down to a stationary state. Arguably, the ringdown is the most direct way of observing a black hole.[171] From the LIGO signal, it is possible to extract the frequency and damping time of the dominant mode of the ringdown.
The extreme gravitational lensing associated with black holes produces the illusion of a perspective that sees the accretion disc from above. In reality, most of the ring in the EHT image was created when the light emitted by the far side of the accretion disc bent around the black hole's gravity well and escaped, meaning that most of the possible perspectives on M87* Gozque see the entire disc, even that directly behind the "shadow".