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This image apparently has not captured as much attention as the image of M87, but anyway, I have a question, maybe someone with the knowledge can answer: Betwe
by murat124 4y ago
This image apparently has not captured as much attention as the image of M87, but anyway, I have a question, maybe someone with the knowledge can answer:
Between the images of M87 and Sgr A, one noticeable difference is that the image of M87 appears to have a single cluster of light "below" the blackhole whereas the image of Sgr A has three surrounding the blackhole. Is this because of the mass and spin differences between the two blackholes?
- nuccy 4y agoLikely it is not about the mass, but about the arrangement of clumps of matter circling around the super massive black holes in the accretion disk. During the presentation they speak about much shorter time-scales for Sgr A* in comparison with M87, saying that for Sgr A* they were "making the image while it was changing" [1]. Also see other variations of the image (many teams analyzed data independently) here [2]. 1. https://www.youtube.com/watch?v=rIQLA6lo6R0&t=1930s https://www.youtube.com/watch?v=rIQLA6lo6R0&t=1930s 2. https://physicsworld.com/wp-content/uploads/2022/05/First-SGR-A-results.jpg https://physicsworld.com/wp-content/uploads/2022/05/First-SG... from https://iopscience.iop.org/article/10.3847/2041-8213/ac6429 https://iopscience.iop.org/article/10.3847/2041-8213/ac6429
- ehsankia 4y ago> This image apparently has not captured as much attention as the image of M87 To be fair, to most non-scientific people the two photos look basically the same, and "orange halo" kinda loses it's appeal quickly
- edgyquant 4y agoThe first image of a black hole is cool to everyone, an image of a black hole in the center of the Galaxy is cool to a vastly smaller group I’d imagine.