- 1 What causes degeneracy pressure?
- 2 What is degeneracy pressure in astronomy?
- 3 What is degeneracy pressure and how is it important to white dwarfs?
- 4 Which source of pressure makes a neutron star stable quizlet?
- 5 Is a black hole supported by degeneracy pressure?
- 6 What is Fermi pressure?
- 7 What does electron degeneracy pressure depend on?
- 8 What do astronomers and physicists mean when they talk about degeneracy pressure?
- 9 What is neutron degeneracy pressure?
- 10 What kind of pressure prevents a white dwarf from collapsing?
- 11 How does a white dwarf’s size depend on its mass?
- 12 What kind of pressure supports a white dwarf?
- 13 Is rapidly rotating neutron star?
- 14 Will our sun ever undergo a white dwarf supernova explosion?
- 15 What is the relationship between a neutron star and a pulsar quizlet?
What causes degeneracy pressure?
Once the lowest energy level is filled, the other electrons are forced into higher and higher energy states resulting in them travelling at progressively faster speeds. These fast moving electrons create a pressure (electron degeneracy pressure) which is capable of supporting a star!
What is degeneracy pressure in astronomy?
[ dĭ-jĕn′ər-ə-sē ] Save This Word! A pressure exerted by dense material consisting of fermions (such as electrons in a white dwarf star). This pressure is explained in terms of the Pauli exclusion principle, which requires that no two fermions be in the same quantum state.
What is degeneracy pressure and how is it important to white dwarfs?
Degeneracy pressure is a kind of pressure that arises when subatomic particles are packed as closely as the laws of quantum mechanics allow. Degeneracy pressure is important to neutron stars and white dwarfs because it is what allows them to resist the pull of gravity.
Which source of pressure makes a neutron star stable quizlet?
Electron degeneracy pressure is the main source of pressure in white dwarfs, while neutron degeneracy pressure is the main source of pressure in neutron stars. What do we mean by the event horizon of a black hole? It is the point beyond which neither light nor anything else can escape.
Is a black hole supported by degeneracy pressure?
This object is composed primarily of degenerate neutron matter. [Should the mass exceed 2-3 times the mass of our sun, this star will collapse into a black hole because gravity will overcome the neutron degeneracy pressure.
What is Fermi pressure?
The total energy of the Fermi gas at absolute zero is larger than the sum of the single-particle ground states because the Pauli principle implies a sort of interaction or pressure that keeps fermions separated and moving. The maximum energy of the fermions at zero temperature is called the Fermi energy.
What does electron degeneracy pressure depend on?
Instead of temperature, the pressure in a degenerate gas depends only on the speed of the degenerate particles; however, adding heat does not increase the speed of most of the electrons, because they are stuck in fully occupied quantum states.
What do astronomers and physicists mean when they talk about degeneracy pressure?
When atoms are subjected to extremely high temperature and pressure, the atoms are stripped of their electrons. In other words, they become ionized. The same thing occurs in neutron stars, but in this case the degenerate pressure is due to neutrons rather than electrons.
What is neutron degeneracy pressure?
Neutron degeneracy is a stellar application of the Pauli Exclusion Principle, as is electron degeneracy. This creates an effective pressure which prevents further gravitational collapse, forming a neutron star.
What kind of pressure prevents a white dwarf from collapsing?
Electron degeneracy pressure will halt the gravitational collapse of a star if its mass is below the Chandrasekhar limit (1.44 solar masses). This is the pressure that prevents a white dwarf star from collapsing.
How does a white dwarf’s size depend on its mass?
Such dense matter is called degenerate. A white dwarf has a diameter similar to the Earth’s and a density such that a teaspoonful weighs a ton! The radii of white dwarfs DECREASE with INCREASING mass because of the increasing strength of gravity.
What kind of pressure supports a white dwarf?
1 Answer. White Dwarfs are supported by electron degeneracy pressure.
Is rapidly rotating neutron star?
Neutron stars rotate extremely rapidly after their formation due to the conservation of angular momentum; in analogy to spinning ice skaters pulling in their arms, the slow rotation of the original star’s core speeds up as it shrinks. A newborn neutron star can rotate many times a second.
Will our sun ever undergo a white dwarf supernova explosion?
D) The white dwarf gains enough mass to exceed the 1.4-solar-mass limit. Will our Sun ever undergo a white dwarf supernova explosion? Yes, when it becomes a white dwarf. C) No, because the Sun’s core will never be hot enough to fuse carbon and other heavier elements into iron.
What is the relationship between a neutron star and a pulsar quizlet?
A spinning neutron star slows as it radiates its energy into space. Most of the energy emitted by a pulsar is carried away as a pulsar wind. rapidly pulsing radio sources, were discovered in 1967. explains pulsars as spinning neutron stars that emit beams of radiation from their magnetic poles.