Black holes have been at the center of research conducted by a team of scientists from Monash University.
Researchers have discovered the secrets of radio waves emitted by… The most massive black holes Using a modern tool Australian Square Kilometer Matrix (ASKAP).
In search of an answer to the question of whether radio waves are emitted by the most massive black holes, astronomers have measured radio waves from the most massive black holes. Galaxies In the near universe. A comprehensive study is used Rapid Continuous Scanning ASKAP (RACS). Associate Professor Michelle Brown, from Monash University, said ASKAP was able to survey wide areas of the sky and was more sensitive than previous similar radio surveys.
Recognizing that the formation of new stars in galaxies can also generate radio waves, scientists focused on galaxies where star formation is minimal or nonexistent. Of the 587 nearby galaxies examined, all 40 of the largest galaxies emit radio waves.
While it is possible that low-level star formation is hiding in these galaxies, black holes seem to be the most likely cause of what we see. Professor Brown said.
The study also revealed differences in radio wave emissions between major galaxies, with some appearing much stronger than others. For example, the galaxy ESO 137-G 6 showed a radio luminosity about 10,000 times greater than the galaxy NGC 6876.
We’ve been able to really dig into this new data to start discovering differences in how these galaxies glow at radio wavelengths. said student Tegan Clark.
This could tell us about central black holes and how they power these massive galaxies.
Why different galaxies emit so much more radio waves than others is a mystery Professor Brown said.
However, we see that galaxies that are strong sources of radio waves appear to rotate more slowly than similar galaxies that are weak radio sources. Getting to the bottom of this issue will be a challenge for me and my students.
The research results have been accepted previously Publications In the Journal of the Australian Astronomical Society.
development:
Agnieszka Novak
more information:
Source: Monash University
Pictured: Monash astronomers detected radio waves from the most massive galaxies using the Australian Square Kilometer Array Pathfinder (ASKAP) satellite. Source: CSIRO
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