Homework Help Overview
The problem involves estimating the size of the emitting region of Sgr A*, a radio source at the center of the galaxy, based on its X-ray flares. The original poster attempts to relate the increase in flux over a specific time period to the dimensions of the emitting region.
Discussion Character
- Exploratory, Assumption checking
Approaches and Questions Raised
- Participants discuss the relevance of the distance light travels in relation to the size of the emitting region and question how this relates to the overall dimensions. There is consideration of the emitting region as a cloud of emitters and how their simultaneous flashing affects visibility.
Discussion Status
Some participants have offered guidance on interpreting the calculations, suggesting that while the initial calculation provides an upper bound on the radial extent, it does not fully define the size of the region. The discussion includes acknowledgment of assumptions made, such as spherical symmetry and instantaneous flashing, which may not hold true.
Contextual Notes
Participants note that the assumptions regarding the nature of the emitting region and the behavior of the emitters may not be physically accurate, indicating a need for further refinement based on additional observations.