Discovery of an extremely narrow trail-like feature crossing the #Veil Supernova Remnant in deep amateur observations: #CygnusLoop, generated as the #SNR blast wave encounters a dense material layer or magnetic structure viewed nearly edge-on" -> a picture: https://x.com/astro_delgado/status/2071490005894123667
#mountainMonday ! Unfortunately not a recent photo but one that's quite a while ago. Before my wife had 2 knee issues. But maybe we can go there again soon.
As you can see, the landscape there is A BLAST! I totally love the area
#mountains
back on the water! didn't catch any keepers today but still had a blast with my dad :)
"…Every filthy stupid thing that happens is happening in the open, now: Captains of industry line up to shake Trump's hand at…big birthday party he threw for himself…every new blast of rank & ancient bigotry or proudly pig-stupid backwardness arrives w/o euphemism or qualification. Trump is not just figuratively walling himself off from…DC, & glowering down at its residents, he is literally doing all those things."
High-Order ADER-DG Hydrodynamics with ExaHyPE: Implementation, Validation, and Astrophysical Benchmarking
Andr\'es Mauricio Su\'arez Mantilla, Leonardo Casta\~neda Colorado
https://arxiv.org/abs/2605.17132 https://arxiv.org/pdf/2605.17132 https://arxiv.org/html/2605.17132
arXiv:2605.17132v1 Announce Type: new
Abstract: We describe a high-order ADER-DG solver for the compressible Euler equations within the ExaHyPE framework. The implementation combines a high-order ADER-DG polynomial representation, a local space-time DG predictor, adaptive mesh refinement, and an a posteriori subcell finite-volume limiter. We test the code on a deliberately mixed set of one- and two-dimensional problems: a strong-shock Sod-type problem, the Shu-Osher shock-entropy interaction, the Woodward-Colella blast wave, a contact-driven vortex sheet, and a shock-interface interaction. The one-dimensional cases recover the expected Euler wave patterns and show clear order-dependent gains in smooth and oscillatory regions. The two-dimensional cases probe a different part of the method, namely contact preservation, shear-driven roll-up, baroclinic vorticity deposition, and Richtmyer-Meshkov-type growth. In these tests the high-order update gives the expected resolution away from discontinuities, whereas the subcell limiter keeps the calculation stable near shocks and steep interfaces. The resulting code provides a reproducible ExaHyPE implementation for idealised inviscid, non-relativistic flows in which shocks, contacts, and multidimensional interfaces are the dominant features.
toXiv_bot_toot
the world is healing
The Rat Utopia Experiment - Blast! (Official Music Video)
#music
Listen to in-depth investigation into the growing industry of green technologies and the environmental, social, and political consequences of the mining it requires. – Join us today, 6pm, at the German Mining Museum. Or virtually.
This, again, will be a blast 👐
Link to the event: htt…
Blast from the past:
Who Goes Nazi?, by Dorothy Thompson
https://harpers.org/archive/1941/08/who-goes-nazi/
Of course the National Emergency Briefing, endorsed by some senior military figures, was clear: climate change is a security issue.
But this fool thinks not: let's blast our way to the future.
PressReader.com | Carns tells Miliband: Energy is security issue not an environmental one. Should drill the North Sea.
Of course the National Emergency Briefing, endorsed by some senior military figures, was clear: climate change is a security issue.
But this fool thinks not: let's blast our way to the future.
PressReader.com | Carns tells Miliband: Energy is security issue not an environmental one. Should drill the North Sea.
@… does she? She's having a blast by the looks of it
Just did very approximate calculations; with 10g of lithium per drone*, and assuming the Russian and Ukrainian drone efforts consume 5m units a year**, that'd be ~50 tons of lithium deposited into the environment per year, mostly within, let's say, 50km of the grey zone***. It's only about $20,000 / ton****, which means $1m of metal*****.
So to answer my own silly question: no, it won't be economically viable to scalp the top few inches of topsoil and extract the lithium from it.
* Roughly right for quadcopters / small FPV; larger and longer range ones will have more, so this is a bottom bound. (OTOH longer range UAVs will tend to use ICE kerosene rather than batteries
** Changing all the time as both sides try expanding production as fast as they can manage. Ua are scaling much faster at time of writing
*** Handwaving. Contact zone's hardly moved since early 2023; OTOH Ua are pushing range limits on small battery-powered form factor, saw a 60km claim for the Logistics Lockdown operation the other day
**** There was a big spike to the $70-8000 range in 2022; median price is closer to $10k than $20k
***** (IDK the chemistry but presumably it's in an exciting range of different compounds, depending on how many bits the battery was blown into, how hot / pressured the blast wave was a few tens of mm from the boom, what other stuff was in the vicinity that the lithium would combine with, etc etc.
Multi-Viewpoint Observation of a Failed #Prominence #Eruption on the #Sun: https://arxiv.org/abs/2604.23084 -> Astronomers Uncover Why Some Solar Eruptions: https://www.cfa.harvard.edu/news/astronomers-uncover-why-some-solar-eruptions-die - new multi-telescope observations show why a powerful blast never became a true mass ejection.
"Hurabiell has a history of making transphobic comments, which was public knowledge when Lurie attended ConnectedSF’s events... Lurie did not distance himself from ConnectedSF, however, and did not say whether he would associate with Hurabiell or the group going forward"
https://
Wow. Eggdrop IRC bot is still in active development. That's a blast from the past..
https://tracker.debian.org/pkg/eggdrop
Crosslisted article(s) found for physics.flu-dyn. https://arxiv.org/list/physics.flu-dyn/new
[1/1]:
- A Variational Lagrangian Framework for Log-Homotopy Particle Flow Filters
Oliv\'er T\"or\H{o}, Domonkos Csuzdi, Tam\'as B\'ecsi
https://arxiv.org/abs/2605.15379 https://mastoxiv.page/@arXiv_eessSY_bot/116594504929196718
- Control of the Fluidic Pinball using the Quadratic-Quadratic Regulator
Ali Bouland, Jeff Borggaard
https://arxiv.org/abs/2605.15438 https://mastoxiv.page/@arXiv_mathOC_bot/116594445551062130
- An efficient multi-GPU implementation for the Discontinuous Galerkin ocean model SLIM
De Le Court, Legat, Ishimwe, Scherpereel, Hanert, Lambrechts
https://arxiv.org/abs/2605.16082 https://mastoxiv.page/@arXiv_csDC_bot/116594484087540741
- Staggering domino-like blast front motion in a one-dimensional cold gas
Taras Holovatch, Yuri Kozitsky, Krzysztof Pilorz, Yurij Holovatch
https://arxiv.org/abs/2605.16125 https://mastoxiv.page/@arXiv_condmatstatmech_bot/116594543858868682
toXiv_bot_toot
Heyyyy sorry for vanishing for a while I've been having a fucking blast
#VRChat #FurryVR #Furality #FuralityUltra