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Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

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Page 1: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

Using All of Our Tools

What the Various Parts of the Spectrum Tell us About Space

Page 2: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

NRAO/AUI/NSF

Radio Waves are NOT sound!

They are part of the electromagnetic spectrum.

Page 3: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space
Page 4: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

NRAO/AUI/NSF

Electromagnetic Waves

traveling, mass-less packet of energy travels at the speed of light (by definition) all radiation travels at this speed, regardless of

whether is carries a lot of energy or only a little

Animation from Nick Strobel’s Astronomy Notes (www.astronomynotes.com)

Page 5: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

NRAO/AUI/NSF

A light wave is a light wave, no matter how long...

Page 6: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

NRAO/AUI/NSF

Different Views of Common Objects

Page 7: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

NRAO/AUI/NSF

Optical and Radio telescopes can be used from the ground!

•Infrared, X-ray and Gamma ray telescopes must work beyond the ionosphere.

•The ionosphere filters out many of the waves

Page 8: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

NRAO/AUI/NSF

Radio Telescope

Optical Telescope

Nowadays, there are more similarities between optical and radio telescopes than ever before.

Page 9: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

NRAO/AUI/NSF

9

The Visible Sky, Sagittarius Region

Page 10: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

NRAO/AUI/NSF 10

The Radio Sky

Page 11: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

NRAO/AUI/NSF 11

Page 12: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

Tour of Orion

The tour presents five images of Orion. All show the same area of the sky but were made with telescopes working at different wavelengths of light (optical, infrared, and three

radio wavelengths).

Page 13: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

Optical view

Page 14: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

Dust in the infrared

Image created By IRAS

Page 15: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

Molecular hydrogen

Radio telescope

Page 16: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

Ionized hydrogen

Page 17: Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

Atomic Hydrogen


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