egg changed the topic of #kspacademia to: https://git.io/JqLs2 | Dogs are cats. Spiders are cat interferometers. | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf | Logs: https://esper.irclog.whitequark.org/kspacademia
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<galois> [arXiv] “Earths within Reach: Evaluation of Strategies for Mitigating Solar Variability using 3.5 years of NEID Sun-as-a-Star Observations” Eric B. Ford, Chad F. Bender, Cullen H. Blake et al. — «We present the results of Sun-as-a-star observations by the NEID Solar Telescope at WIYN Observatory, spanning January 1, 2021 through June 30, 2024. We identify 117,060 observations which are unlikely to be significantly affected by…»
<raptop> Stellar activity looks to be solvable!
<raptop> And they can potentially do better in tellurics
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<X> I didn't even know stellar activity was unsolved
<SnoopJ> the stellar halting problem, OTOH…
<raptop> X: technically it's magnetohydrodynamics, so...
<raptop> SnoopJ: Okay, yes. But we want to find the planets sooner than that
<raptop> astronomers naming things: https://arxiv.org/abs/2408.15236
<galois> [arXiv] “MADNESS Deblender: Maximum A posteriori with Deep NEural networks for Source Separation” Biswajit Biswas, Eric Aubourg, Alexandre Boucaud et al. — «Due to the unprecedented depth of the upcoming ground-based Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observatory, approximately two-thirds of the galaxies are likely to be affected by blending - the overlap of physically separated galaxies in images.…»
<raptop> X: but more generally, you've got a bunch of different things. Stars pulsate and wobble, they have convective cells of varying size and shape. They have spots and faculae that change in a not really predictable manner. And then there are the flares.
<X> I would assume that.... stars are not uniformly dense so you'd need to know.... like where stuff is
<raptop> At least as far as radial profiles in density go, there's been a lot of work on that dating back to at least the early 20th century
<raptop> But the details of what's going on at the stellar surface are especially difficult when blobs of plasma moving at up to hundreds of m/s are a regular thing that can mess with signals that are tens of cm/s
<galois> [xkcd] Three Kinds of Research | Alt-text: The secret fourth kind is 'we applied a standard theory to their map of every tree and got some suspicious results.'
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