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An Introduction An Introduction To The Radio To The Radio

SkySky

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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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Gravitational

radiation

PSR B1913+16

discovered and

timed at Arecibo

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The first extrasolar planets

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M33

Spiral Galaxy

Optical + Radio (HI) image

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Galactic Building BlocksGalactic Building Blocks

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CosmologicalPrinciple

CosmologicalEvolution

Cosmic frame

Dark energy

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WMAPresults:

• CMB=380 kyr

• Stars=0.2 Gyr

• Now=13.7 Gyr

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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