Chapter 18 Vocab
Astronomy 102 with Fraser at California State University - Polytechnic State University, San Luis Obispo
About this deck
By: Courtney Allen
Textbook:
The Cosmic Perspective: Stars, Galaxies, and Cosmology with MasteringAstronomy? (6th Edition)
Created: 2011-11-03
Size: 16 flashcards
Views: 9
Textbook:
The Cosmic Perspective: Stars, Galaxies, and Cosmology with MasteringAstronomy? (6th Edition)Created: 2011-11-03
Size: 16 flashcards
Views: 9
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White Dwarf
essentially the exposed core of a star that has died and shed its outer layers in a planetary nebula.
Electron Degeneracy Pressure
A type of pressure that arises when subatomic particles are packed as closely as the laws of quantum mechanics allow. The degeneracy pressure in white dwarfs arises from closely packed electrons.
Accretion Disks
The rapidly rotating disk
Accretion
The process in which material falls onto another body
White Dwarf Supernova
The white dwarf explosion. A super nova that occurs when an according white dwarf reaches the white-dwarf limit, ignites runaway carbon fusion, and explodes like a bomb.
Neutron Star
Is the ball of neutrons created by the collapse of the iron core in a massive star supernova.
Neutron Degeneracy Pressure
Degeneracy pressure exerted by neutrons as in neutron stars.
Pulsars
A neutron star from which we see rapid pulses of radiation as it rotates.
X-Ray Binaries
A binary star system that emits substantial amounts of X-rays, thought to be from an accretion disk around a neutron star or a black hole.
X-Ray Bursts
Bursts of X rays coming from sudden ignition of fusion on the surface of an accreting neutron star in an X-ray binary system
X-Ray Bursters
An object that emits a burst of X rays every few hours to every few days; each burst lasts a few seconds and is thought to be caused by helium fusion on the surface of an accreting neutron star in a binary system.
Event Horizon
The boundary between the inside of a black hole and the universe outside
Spacetime
Space and time are not distinct, as we usually think of them, but instead are bound up together as four-dimensional space time
Schwarzschild radius
The radius of the event horizon
Singularity
The place at the center of a black hole where, in principle, gravity crushes all matter to an infinitely tiny and dense point
Gamma-ray bursts
A sudden burst of gamma rats from deep space; such bursts apparently come from distant galaxies, but their precise mechanism is unknown
About this deck
By: Courtney Allen
Textbook: The Cosmic Perspective: Stars, Galaxies, and Cosmology with MasteringAstronomy? (6th Edition)
Created: 2011-11-03
Size: 16 flashcards
Views: 9
Textbook:
The Cosmic Perspective: Stars, Galaxies, and Cosmology with MasteringAstronomy? (6th Edition)Created: 2011-11-03
Size: 16 flashcards
Views: 9
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
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“I have used this website for three exams, and I see a huge difference in my test results.”
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