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Astronomy test review-Neutron Stars and Black Holes
Terms in this set (21)
Formed from Type 2 Supernovas, can happen when an iron core collapses. The magnetic field is a million times stronger than Earth. Smallest and densest star that has existed.
We can detect black holes. People cannot see black holes. The interiors of black holes will remain a mystery. Do not suck in material any more than the original star.
Undergoes core collapse like a Type 2 Supernova, does not form a Neutron Star. It's a failed Supernova which means there is to much gravity. There are no straight lines. Hyper nova's form gamma ray bursts
Einstein discovered Special Relativity. Unusual behavior of objects traveling near the speed of light. The speed of light is constant. 3x10^8 equals the speed of light.
Gravity is not a force, spacetime warping due to high mass. High mass and space time go together when warping.
Jocelyn Bell discovered Pulsars. Thought to be rapidly rotating neutron star. Emits regular pulses of radio waves. There are 1,000 known pulsars. It is possible for a pulsar to be constant between a few seconds in a million years.
Gamma Ray Bursts
Can come from Hypernova's and are extremely energetic explosions that have been observed in distant galaxies. They are the brightest electromagnetic events known to occur in the universe.
An example of how a pulsar works. The star turns on and off. Explains pulsars spinning neutron stars that emit beams of radiation from their magnetic poles. As they spin, they sweep their beams across the sky.
Type 2 Supernova
results from the rapid collapse and violent explosion of a massive star. A star must have at least 8 times, and no more than 40-50 times, the mass of the Sun.
Type 1 Supernova
A type I supernova is caused by a white dwarf and a type II supernova is caused by a massive star.
Spaghettification, a force that is the secondary effect of the force of gravity; it is responsible for the phenomenon of tides. It arises because the gravitational force exerted by one body on another is not constant across it.
a theoretical boundary around a black hole beyond which no light or other radiation can escape.
Supermassive Black Hole
is the largest type of black hole, on the order of hundreds of thousands to billions of solar masses. And it's found in the centre of almost all currently known massive galaxies.
is an observational branch of astronomy which deals with the study of X-ray observation and detection from astronomical objects.
The Core becomes unstable. The central or innermost portion of the Earth, lying below the mantle and probably consisting of iron.
a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
A binary star is a star system consisting of two stars orbiting around their common barycenter. Systems of two or more stars are called multiple star systems.
High mass and space time warp together in General Relativity. Space time warps.
Gravity is a force which tries to pull two objects toward each other. Anything which has mass also has a gravitational pull. The more massive an object is, the stronger its gravitational pull is. Earth's gravity is what keeps you on the ground and what causes objects to fall.
the displacement of spectral lines toward longer wavelengths (the red end of the spectrum) in radiation from distant galaxies and celestial objects. This is interpreted as a Doppler shift that is proportional to the velocity of recession and thus to distance.
means a point where some property is infinite. For example, at the center of a black hole, according to classical theory, the density is infinite.
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