What are the jets of light coming out of black holes?
Astrophysical jet
{'answer_start': array([-1]), 'answer_text': array([''], dtype=object)}
Massive central black holes in galaxies have the most powerful jets, but their structure and behaviours are similar to those of smaller galactic neutron stars and black holes. These SMBH systems are often called microquasars and show a large range of velocities. SS433 jet, for example, has a velocity of 0.23c. Relativistic jet formation may also explain observed gamma-ray bursts. Notably, even weaker and less relativistic jets may be associated with many binary systems.