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Bill Keel's Quasars and Active Galactic Nuclei page. |
The National Radio Astronomy Observatory's Image Gallery of Active Galactic Nuclei |
Visible image of 3C273 | |
Visible spectrum of 3C273 |
3C273's one-sided jet | |
Radio
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Visible
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X-ray
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3C273's jet at various wavelengths |
3C273's jet is superluminal (appears to travel faster than light) | |
Quasars typically emit strong Lyman alpha. Blueward of the emission line is a forest of Lyman alpha absorption lines, produced by the cosmic web of hydrogen gas along the line of sight between us and the quasar.
Quasar animation |
syllabus | timetable | projects | homework | clicker questions | weekly summaries | review | images |
Updated 2018 Jan 25