active galaxy
C31365
concept
An active galaxy is a galaxy whose central region emits exceptionally large amounts of energy across the electromagnetic spectrum, powered by matter accreting onto a supermassive black hole.
Observed surface forms (5)
- radio galaxy ×5
- Seyfert 2 galaxy ×2
- blazar ×1
- blazar-like AGN ×1
- emission-line galaxy ×1
Instances (14)
- NGC 7319
- Messier 87 via concept surface "radio galaxy"
- NGC 5128 via concept surface "radio galaxy"
- NGC 4945
- NGC 4388
- NGC 4579
- NGC 4639
- NGC 4374 via concept surface "radio galaxy"
- NGC 4486 via concept surface "radio galaxy"
- 3C 84 via concept surface "blazar-like AGN"
-
Lacerta
via concept surface "blazar"
surface form: BL Lacertae
- NGC 4696 via concept surface "radio galaxy"
- NGC 7314
- NGC 7172 via concept surface "Seyfert 2 galaxy"