Making an assumption is inevitable and reasonable in many research projects since it is practically impossible to handle all physics we know in a single study; even if it is feasible, it would rather squander resources, which are given to us. However, it is always required to evaluate carefully whether the assumptions are applicable for the particular project. Otherwise, the results may not be able to convince the community, even when the causal connection is well proven to be true. In this post, I will introduce my recent work talking about one assumption people used to make for the study of Sagittarius A*: radiative cooling can be ignored. The supermassive…
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