Impact of super massive black holes on stellar birth
Exploration is the essence of the human spirit and as far as it is concerned with the universe, it goes beyond the human imagination. Recently, a European research group has analyzed the impact of supermassive black holes on star formation. The research team was led by Professor Kalliopi Dasyra from the National and Kapodistrian University of Athens, Greece, in collaboration with Dr. Thomas Bisbas from the University of Cologne. Star formation in galaxies has long been a focal point of astronomy research. Decades of successful observations and theoretical modeling resulted in our good understanding of how gas collapses to form new stars in and beyond our Milky Way. In order to assess the gas pressure in both jet-impacted clouds and background clouds, researchers used the Very Large Telescope (VLT) and Atacama Large Millimeter Array (ALMA) observatories. Further, researchers have found that the jets dramatically modify the internal and external pressure of molecular clouds in their path and this indicates that star formation, cloud dissipation, cloud compression, and star formation delay can all occur in the same galaxy, depending on which of the two pressures varies to the greatest extent.
The researchers profess that the supermassive black holes even though are located at the centers of galaxies, could affect star formation in a Galaxy-wide manner. The success of this process depended heavily on how pressure variations affected cloud stability. It is typically quite challenging to distinguish a star’s signal from all the other stars in the galaxy that is hosting the wind once a few stars have actually formed in the wind.
Gas condensation leads to star formation
Astrophysicists believe that supermassive black holes lie at the centers of most galaxies in our Universe. When particles that were in falling onto these black holes are trapped by magnetic fields, they can be ejected outwards and travel far inside galaxies in the form of enormous and powerful jets of plasma. These jets are often perpendicular to galactic disks. These jets frequently intersect galaxy discs at an angle. The jets are moving within the disc of IC 5063, a galaxy 156 million light years away, interacting with cold, thick molecular gas clouds. This interaction is predicted to result in the compression of jet-impacted clouds, which could eventually cause gravitational instabilities and star formation due to gas condensation.
Conclusion
Researchers claim that one challenging aspect of this research was to rigorously determine as many physical limitations to the analyzed range that each parameter may have. In this manner, they may obtain the ideal assemblage of cloud physical properties throughout the Galaxy. In IC 5063; pressures were recorded across the entire area. In its place, maps of these and other galaxy center quantities were made. These maps gave the researchers a way to visualize how the jet passage causes the gas characteristics to change from one area to another
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