In summary, a team of physicists discovered a peculiar active Galactic nucleus (AGN) named PBC j233.9-2343. This AGN was originally a radio Galaxy with massive lobes of radio emissions. However, it has now transformed into a blazar, with its jet of particles pointing directly at us. This transformation suggests that the orientation of AGNs can change over time due to factors like mergers and changes in the accretion disk's angle. This discovery provides new insights into the dynamic nature of AGNs and offers an opportunity to study astrophysical jets and black hole behavior.
Here are the key facts extracted from the provided text:
1. Physicists have discovered a black hole.
2. The black hole has been emitting particle beams for years.
3. Recently, one of these particle beams has been directed towards us.
4. There is no danger to us from this phenomenon.
5. This is a unique and cool phenomenon never seen before.
6. Quasars are extremely bright and are considered one of the most extreme phenomena in the universe.
7. Active Galactic Nuclei (AGN) encompass various objects related to supermassive black holes.
8. The types of AGN depend on factors like black hole size, feeding rate, and jet orientation.
9. Different AGN can sometimes transform into other types.
10. The phenomenon of a black hole changing its orientation and pointing towards us is unusual.
11. AGN typically have a supermassive black hole at their core.
12. The accretion disk around the black hole emits various types of radiation.
13. Magnetic fields play a significant role in shaping AGN jets.
14. Jets produced by AGN can emit synchrotron radiation.
15. Blazars are AGN with extreme synchrotron emission and rapid flaring activity.
16. Radio galaxies and blazars can result from the same underlying physical object, with the difference being the observer's angle.
17. The orientation of AGN and their jets depends on factors like black hole spin and the angle of accretion events.
18. A recent observation has shown a radio galaxy changing its orientation to point directly at us, resembling a blazar.
19. The change in jet direction could be due to changes in the accretion disk or a black hole merger.
20. This observation opens new avenues for studying astrophysical jet formation and the life cycles of AGN.
21. A live stream will be held to answer questions and address comments from viewers.
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