Black holes are said to exist at the center of almost all massive galaxies where they feed on galactic dust, gas and stars. They are some of the most mysterious celestial phenomena that have fascinated space enthusiasts and scientists alike. To get a better insight into these black holes, researchers at Dartmouth College have conducted a study that analyzes light from supermassive black holes. The technique could allow scientists to understand the life cycles of these black holes.
light from supermassive black hole May vary in terms of color, brightness and spectral signature. It was believed that this difference was visible due to different viewing angles and how much black hole It was covered by a “torus,” or doughnut-shaped ring of gas and dust that surrounds the active galactic nucleus (AGN).
“The light signature of these objects has puzzled researchers for more than half a century,” said Tonima Tasneem Anna, a postdoctoral research associate at Dartmouth. Anna is also the lead author of the recent study Published in The Astrophysical Journal.
In the study, it was observed that the amount of dust and gas around supermassive black holes depends on the speed of their evolution. When such black holes feed at a high rate, they spread dust and gas around, making the black hole appear brighter.
The research also sheds light on fundamental differences between supermassive black holes with different light signatures. It also underlined that the differences could not be explained simply by whether the observation occurred through or near an AGN.
Anna developed a computational technique to assess how obscure matter affected the observed properties of black holes. The observations showed that there was a need to revise the existing theory of AGN which puts both the ambiguous and the ambiguous AGN in the same pool.
“Over time, we have made many assumptions about the physics of these objects. We now know that the properties of heavily elusive black holes are quite different from those of unobserved AGNs,” said Anna.