Seyfert Galaxies and Blazars

Science

Not all active galaxies are as dramatic as quasars. From the common, nearby Seyfert galaxies with their unusually bright nuclei, to the extreme blazars whose jets point directly at Earth — discover the full spectrum of cosmic fireworks in active galactic nuclei.

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10
Questions
5–10 min
Time
Q1 Question 1 of 10

Who discovered Seyfert galaxies, and when?

Q2 Question 2 of 10

What is the difference between a Type 1 and a Type 2 Seyfert galaxy?

Q3 Question 3 of 10

How do Seyfert galaxies compare to quasars in luminosity?

Q4 Question 4 of 10

What type of galaxy are Seyfert galaxies?

Q5 Question 5 of 10

What is a blazar?

Q6 Question 6 of 10

What are the two types of blazars?

Q7 Question 7 of 10

What is NGC 1068 (also known as M77) famous for?

Q8 Question 8 of 10

Why are blazars important for high-energy astrophysics?

Q9 Question 9 of 10

How does the unified model explain the different types of AGN?

Q10 Question 10 of 10

Why do blazars show dramatic brightness variations on timescales as short as hours?