A black dwarf.
As a white dwarf loses energy and cools down, it eventually transitions into a black dwarf. A black dwarf is a hypothetical stellar remnant that has cooled to the point where it no longer emits heat or light. It is smaller and denser than a white dwarf.
Sort of. It can be considered a dead star - one that no longer produces energy. At the end of their life, smaller (less massive) stars become white dwarves. These will no longer produce energy, but will continue to glow with their residual energy for a long time. After a long, long time - much longer than the current age of the Universe - they will stop emitting significant amounts of energy, and become black dwarves.
Yes, a black dwarf is essentially a white dwarf that has cooled down and no longer emits significant light or heat. After a white dwarf exhausts its remaining thermal energy over billions of years, it becomes a black dwarf, making it effectively invisible to the naked eye. However, as of now, no black dwarfs are believed to exist in the universe, as the universe is not old enough for any white dwarfs to have cooled to this stage.
Yes, an electron moves from one orbit to another when it absorbs or emits energy. This process is known as electronic transitions. When an electron absorbs energy, it moves to a higher energy level, and when it emits energy, it moves to a lower energy level.
In the Bohr model of the atom, an electron emits a photon when it moves from a higher energy level to a lower energy level.
A black dwarf [See related question]
As a white dwarf loses energy and cools down, it eventually transitions into a black dwarf. A black dwarf is a hypothetical stellar remnant that has cooled to the point where it no longer emits heat or light. It is smaller and denser than a white dwarf.
A black dwarf is a theoretical end-stage of a white dwarf star in the far future, after it has cooled down and no longer emits light. White dwarfs are hot, dense remnants of low to medium mass stars at the end of their evolution.
There are no "cycles". A black dwarf star is the final stage of a white dwarf - a white dwarf that has cooled down so much that it no longer emits significant amounts of radiation. The Universe is currently too young to have black dwarves; white dwarves are expected to become black dwarves in the far future.
A white dwarf is not considered a "dead star." It is considered a dying star, but not dead yet. A white dwarf is at its smallest state and could become a supernova when its center runs out of fuel to burn.
Sort of. It can be considered a dead star - one that no longer produces energy. At the end of their life, smaller (less massive) stars become white dwarves. These will no longer produce energy, but will continue to glow with their residual energy for a long time. After a long, long time - much longer than the current age of the Universe - they will stop emitting significant amounts of energy, and become black dwarves.
When it no longer absorbs or emits energy from the surroundings.
A white dwarf is the remnant core of a low to medium mass star that has finished nuclear fusion, while a black dwarf is a hypothetical end state where a white dwarf has completely cooled and no longer emits heat or light. Currently, no black dwarfs have been observed in the universe due to the long cooling timescales involved.
Yes, gamma decay emits energy in the form of gamma radiation, which is a high-energy electromagnetic wave. Gamma decay does not emit any particles, only electromagnetic radiation.
A dying star that gives no light is called a black dwarf. This celestial object is the remnant of a sun-like star that has exhausted all its nuclear fuel and has cooled down to a point where it no longer emits any visible light.
There is no source of energy heating a white dwarf. The heat is left over from when it was a full-fledged star, like a stone pulled from the coals of a fire. The white dwarf glows simply because it is very hot.
It's kinetic