raptop changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | 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
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<UmbralRaptop> "Our understanding of neutron stars (NSs) has changed drastically since the first Annual Review article by Wheeler (1966) on this subject, when not a single NS was known and the discussion consisted of an entirely theoretical treatment of collapsed dense stars."
<UmbralRaptop> That's quite an intro.
<bofh> wow, so like 52 years ago we still hadn't found a single NS?
<bofh> goddamn
<UmbralRaptop> Yep!
* UmbralRaptop is finally getting around to reading one of the papers Fiora linked.
<kmath> <gravity_levity> 1/ Who wants to hear some scientific intrigue? ⏎ ⏎ A few weeks ago, a group of physical chemists posted a paper onlin… https://t.co/pWUPG1istH
<bofh> it really should be, yeah.
<kmath> <gravity_levity> @sankyrockzz Me neither, I'm afraid.
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<B787_300> UmbralRaptop: i mean even then put it in the alleged
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<B787_300> there is no way in the universe that the noise "happened" to match
<UmbralRaptor> makes sense
<UmbralRaptor> bofh: Annual Review papers are eggcellant, and it seems like a travesty that they're paywalled.
<bofh> UmbralRaptor: AGREED 10000%
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<UmbralRaptor> neutron stars: where 10^5 K is cold.
<B787_300> UmbralRaptor: neutron stars are weird... too dense and small to be a White Dwarf, not dense enough to be a Black Hole
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<mlbaker> bofh: you here yet?
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* egg|work|egg meows at mlbaker
<UmbralRaptor> … 1.1 to 2 M_☉ is not a broad range!
<UmbralRaptor> … it's possible that in absolute terms white dwarfs span a larger mass range than neutron stars.
<UmbralRaptor> (It relative terms, they absolutely do.)
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<_whitenotifier-6f89> [Principia] EthanWang706 commented on issue #1955: Still, Too slow warp speed in MacOS - https://git.io/fppax
<egg|work|egg> !!! a user is happy \o/
<_whitenotifier-6f89> [Principia] EthanWang706 edited a comment on issue #1955: Still, Too slow warp speed in MacOS - https://git.io/fppax
<egg|work|egg> ;seen awang
<kmath> egg|work|egg: awang (awang!~awang@cpe-98-31-27-190.columbus.res.rr.com) was last seen quitting in somewhere at 2018-12-02 15:01:55 +0000
<_whitenotifier-6f89> [Principia] pleroy commented on issue #1955: Still, Too slow warp speed in MacOS - https://git.io/fpp67
<UmbralRaptor> "Hello Patrick, 
<UmbralRaptor> There’s still time to further student success at UMKC! Your donation will make a difference. 
<UmbralRaptor> $30 a month can release an enrollment hold on a student’s account. 
<UmbralRaptor> $20 a month can allow a student to buy books for a semester.
<UmbralRaptor> Even $10 a month will help a student buy essential supplies."
<UmbralRaptor> …
<UmbralRaptor> Anyway, apparently UMKC is holding students hostage?
<UmbralRaptor> Apparently today is the GMU holiday potluck.
* UmbralRaptor did not get the email. Does this mean that I don't eggsist?
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<UmbralRaptor> Oh, right. Birds aren't real. I'm a bird. Complete the syllogism.
<bofh> chirp chirp
* UmbralRaptor chirps
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<SnoopJeDi> uh. PDFs from OSA's "Optica" are...grayscale?
<SnoopJeDi> nope, nvm, my browser was having a go at it
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<kmath> <exoZafar> I just discovered a python thing that will change my life forever: you can make your code talk! On a mac: import os… https://t.co/fbMCaI0ISs
<SnoopJeDi> not a python thing per se since `say` is just a system command being called
<SnoopJeDi> but using it from a jupyter notebook is a pretty clever idea for "hey that thing is dnoe"
<UmbralRaptor> :D
<UmbralRaptor> Now if only I could set the voice to Miku…
* UmbralRaptor apparently facestabbed a cyclops this year https://photos.app.goo.gl/6vzcTwnfgeGqtKJi9
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<_whitenotifier-6f89> [Principia] eggrobin labeled pull request #2030: 15.9.4 has the same bugs as 15.9.3 - https://git.io/fpx0b
<_whitenotifier-6f89> [Principia] eggrobin closed pull request #2030: 15.9.4 has the same bugs as 15.9.3 - https://git.io/fpx0b
<_whitenotifier-6f89> [Principia] eggrobin pushed 2 commits to master [+0/-0/±10] https://git.io/fphIh
<_whitenotifier-6f89> [Principia] pleroy e84ff04 - 15.9.4 has the same bugs as 15.9.3.
<_whitenotifier-6f89> [Principia] eggrobin e4d9091 - Merge pull request #2030 from pleroy/15.9.4 15.9.4 has the same bugs as 15.9.3
* UmbralRaptor 🔪 Java
<UmbralRaptor> Languages that calculate 1/3 by default the way you most likely mean it: Python 3.
<UmbralRaptor> Languages that do not: *
<SnoopJeDi> Julia does "the right thing" as well
<SnoopJeDi> although interestingly, x//y constructs a Rational object instead of performing a division
<UmbralRaptor> interesting
<_whitenotifier-6f89> [Principia] pleroy synchronize pull request #2003: New parameters for Trappist optimization - https://git.io/fpPma
<B787_300> UmbralRaptor: you see the thing about 2018 VG18?
<UmbralRaptor> Is that the new 200 km ish thing that was recently announced?
<B787_300> 500 km dia
<UmbralRaptor> ah
<B787_300> Out at 120 AU or so
<B787_300> My question is why will it take so long to nail down the orbit. Is it just a question of time on the super large telescopes?
<B787_300> Because if you get enough measurements, especially from geographically diverse sites then even the slow movement should become apparent
<UmbralRaptor> sufficiently large observation arc needed
<B787_300> Ugh how I wish I had a copy of ODTK right now to mess around with it... I dont think you need that long of an observation arc
<UmbralRaptor> Minimum period is 465 years. Hrm…
<UmbralRaptor> (more plausibly >650 years)
<B787_300> Characteristics of Orbit Determination with Short-Arc Observation by an Optical Tracking Network, OWL-Net (https://www.hindawi.com/journals/ijae/2018/2837301/) I mean this seems to show that orbit determination using a 5s observation of a Leo sat is pretty accurate
<B787_300> Especially with a large number of observations
<B787_300> Granted .0015 percent of 450 years is .7 years so that is the equivalent of a 5 sec ob of a 90 min Leo sat
<B787_300> Sorry .007 years
<B787_300> Which is only 3 days or so
<B787_300> And yeah you cant look at it continuously for that time but the method should still hold if you decrease the time and increase the number of obs
<B787_300> Plus if you do multiple sites and have good data on the distance between those sites and the angles they are pointing you should be able to get a pretty accurate pseudo range which would help drive down the uncertainty
<UmbralRaptor> I'm getting 5 sec of 90 minutes as just under 1/1000
<UmbralRaptor> So, 5 ish months for 450 years (0x120 au)
<B787_300> I am just saying if we really cared we should be able to nail down its orbit faster than multiple years
<UmbralRaptor> Yeah, I'd expect ~1 year max even for a circular orbit (O_o)
<SnoopJeDi> B787_300, you can prepend "if we really cared" to a *lot* of stuff that's limited by observation time...
<B787_300> Which leads me to think it is a factor of time on the big scopes as I would think you need a 2 m + scope to even hope of seeing it
<UmbralRaptor> 11 observations over 32 days o_O
* UmbralRaptor stares at the JPL ephemeris. σ>μ much of the time O_o
<kmath> <AndrewBarnas> Scientist goals I've not yet achieved but desperately want to: ⏎ 1. Burst into a room full of politicians while clutc… https://t.co/JBuxC4Lh1F
<bofh> UmbralRaptor: uhhhhhhhhhhhhhhhhhhhhhhhhh at that ephemeris
<UmbralRaptor> ikr