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Why would we expect a subset of supernovae to have exactly the same peak luminosity no matter where they are and what stars they occur in? Instrument artifact,
by empthought 10y ago
Why would we expect a subset of supernovae to have exactly the same peak luminosity no matter where they are and what stars they occur in? Instrument artifact, or previously-unknown outcome of the physical laws of the universe?
- tgflynn 10y agoYes some natural phenomenon also seems possible. What I'm really questioning is their ETI hypothesis. How do they explain that 100's of different civilizations would all choose the same modulation period ?
- cyphar 10y agoThe difference is that asteroseismology (which comes from hydrodynamics) predicts that the oscillation frequencies of stars are determined by several factors intrinsic to the star. We therefore don't expect many different kinds of stars to have similar oscillation frequencies (though the oscillations themselves may have similarities such as the scaling relation for solar-like oscillators). I don't know much about the actual physics behind supernovae but I'm fairly sure that the maths makes the power predictions that we observe.