An Introduction To The Radio Sky
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Transcript of An Introduction To The Radio Sky
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NRAO/AUI/NSF 1
An Introduction An Introduction To The Radio To The Radio
SkySky
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NRAO/AUI/NSF 2
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NRAO/AUI/NSF 3
The Visible Sky During The Day
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The Visible Sky At Night
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The Radio Sky
Both Day and Night
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NRAO/AUI/NSF 6
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Gravitational
radiation
PSR B1913+16
discovered and
timed at Arecibo
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NRAO/AUI/NSF 24
The first extrasolar planets
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NRAO/AUI/NSF 33
M33
Spiral Galaxy
Optical + Radio (HI) image
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NRAO/AUI/NSF 36
Galactic Building BlocksGalactic Building Blocks
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CosmologicalPrinciple
CosmologicalEvolution
Cosmic frame
Dark energy
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NRAO/AUI/NSF 39
WMAPresults:
• CMB=380 kyr
• Stars=0.2 Gyr
• Now=13.7 Gyr
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NRAO/AUI/NSF 40
Radio astronomy: Discoveries
• Nonthermal radiation
• The violent universe of SMBHs
• Cosmological evolution
• Emission from cool interstellar gas
• The cosmic microwave background
• Neutron stars
• Gravitational radiation
• Extrasolar planets
• Gravitational lensing