Betelgeuse is ringing at a changed freqency

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Categories: Comparisons

An example of metaphor and analogy used in public science discourse:

"Basic physics says that when you have a star, of that mass, and that radius, it's going to go in and out and pulsate on [a frequency of] 400 days, but after the mass was ejected it starts ringing with a much shorter period. In other words, it's not 400 days any more it's, oh, 200, 180, and it getting brighter and dimmer much faster than it ever has in over a century, and it is as if the star is trying to recover itself. The analogy that we have been using is that it's like when your washing machine goes out of balance, you know, and it starts not quite getting back into the normal behaviour."

Dr Andrea Dupree

Dr Andrea Dupree (Associate Director, Center for Astrophysics, Harvard & Smithsonian) was (interviewed by Roland Pease on an episode of BBC's 'Science in Action')

(A suggestion that a star was trying to recover itself would be considered an anthropomorphism – but here that was only suggestee as a simile: 'as if')

The term ringing was not being used specifically because this was a programme for a non-specialist audience, as the work discussed was reported in a paper on a pre-print site

"…applied to Betelgeuse, this suggests that over
time, the post-outburst overtone ringing that we observe
may fade, or switch back to the fundamental mode"


https://doi.org/10.48550/arXiv.2305.09732

MacLeod, M., Antoni, A., Huang, C. D., Dupree, A., & Loeb, A.(2023) Left Ringing: Betelgeuse Illuminates the Connection Between Convective outbursts, Mode switching, and Mass Ejection in Red Supergiants

So, perhaps this is a 'dead metaphor' in the research community in this field.

Read about analogy in science

Read examples of scientific analogies

[Please be aware that a word may have different nuances, or even a different meaning, according to context.]« Back to Index

Author: Keith

Former school and college science teacher, teacher educator, research supervisor, and research methods lecturer. Emeritus Professor of Science Education at the University of Cambridge.