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Astronomy Ch 11

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Title: Astronomy Ch 11
Description: black hole A mass that has collapsed to such a small volume that its gravity prevents the escape of all radiation. Also, the volume of space from which radiation may not escape. (p. 240) <br />collapsar A star of high mass that collapses into a black hole. A possible source of gamma-ray bursts. (p. 247) <br />event horizon The boundary of the region of a black hole from which no radiation may escape. No event that occurs within the event horizon is visible to a distant observer. (p. 242) <br />gamma-ray burster An object very faint at visual wavelengths that produces a sudden, powerful burst of gamma rays. (p. 246) <br />gravitational radiation Disturbances in a gravitational field traveling at the velocity of light and carrying energy away from an object with a rapidly changing mass distribution. (p. 236) <br />gravitational redshift The lengthening of the wavelength of a photon due to its escape from a gravitational field. (p. 243) <br />hypernova Produced when a very massive star collapses into a black hole. Thought to be a possible source of gamma-ray bursts. (p. 247) <br />magnetar A class of neutron star having very strong magnetic fields. (p. 247) <br />millisecond pulsar A pulsar with a pulse period of only a few milliseconds. (p. 238) <br />neutron star A small, highly dense star composed almost entirely of tightly packed neutrons. Radius about 10 km. (p. 230) <br />pulsar A source of short, precisely timed radio bursts. Believed to be spinning neutron stars. (p. 231) <br />pulsar wind The breeze of high-energy particles flowing away from a spinning neutron star. (p. 233) <br />Schwarzschild radius (RS) The radius of the event horizon around a black hole. (p. 242) <br />singularity The object of zero radius into which the matter in a black hole is believed to fall. (p. 241) <br />soft gamma-ray repeater (SGR) An object that produces repeated bursts of low-energy (soft) gamma rays. (p. 247) <br />time dilation The slowing of moving clocks or clocks in strong gravitational fields. (p. 243) <br />X-ray burster An object that produces repeated bursts of X rays. (p. 237)
Number of Cards: 17
Author: thesuhys13
Created: 2006-04-30
Tags: astronomy
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Question Answer Note/Hint
black hole A mass that has collapsed to such a small volume that its gravity prevents the escape of all radiation. Also, the volume of space from which radiation may not escape. (p. 240)
collapsar A star of high mass that collapses into a black hole. A possible source of gamma-ray bursts. (p. 247)
event horizon The boundary of the region of a black hole from which no radiation may escape. No event that occurs within the event horizon is visible to a distant observer. (p. 242)
gamma-ray burster An object very faint at visual wavelengths that produces a sudden, powerful burst of gamma rays. (p. 246)
gravitational radiation Disturbances in a gravitational field traveling at the velocity of light and carrying energy away from an object with a rapidly changing mass distribution. (p. 236)
gravitational redshift The lengthening of the wavelength of a photon due to its escape from a gravitational field. (p. 243)
hypernova Produced when a very massive star collapses into a black hole. Thought to be a possible source of gamma-ray bursts. (p. 247)
magnetar A class of neutron star having very strong magnetic fields. (p. 247)
millisecond pulsar A pulsar with a pulse period of only a few milliseconds. (p. 238)
neutron star A small, highly dense star composed almost entirely of tightly packed neutrons. Radius about 10 km. (p. 230)
pulsar A source of short, precisely timed radio bursts. Believed to be spinning neutron stars. (p. 231)
pulsar wind The breeze of high-energy particles flowing away from a spinning neutron star. (p. 233)
Schwarzschild radius (RS) The radius of the event horizon around a black hole. (p. 242)
singularity The object of zero radius into which the matter in a black hole is believed to fall. (p. 241)
soft gamma-ray repeater (SGR) An object that produces repeated bursts of low-energy (soft) gamma rays. (p. 247)
time dilation The slowing of moving clocks or clocks in strong gravitational fields. (p. 243)
X-ray burster An object that produces repeated bursts of X rays. (p. 237)
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