Waves breaking over the cliffs in #Tarragona during sunset
Ireland has been good to me this Christmas.
Kelvin wave and soliton propagation in classical viscous vortex filaments
Elio Sterkers, Giorgio Krstulovic
https://arxiv.org/abs/2602.22439 https://arxiv.org/pdf/2602.22439 https://arxiv.org/html/2602.22439
arXiv:2602.22439v1 Announce Type: new
Abstract: Vortex filaments are highly rotating localized structures of fluids that admits several types of excitation. Here, we study them by using numerical simulations of the three-dimensional incompressible Navier-Stokes equations. We first address the propagation of Kelvin waves, helicoidal excitations propagating along the filament, and measure their dispersion relation which turns out to be in good agreement with the original Lord Kelvin predictions. Then, inspired by the connection between vortex line dynamics and an integrable system, we show numerically the existence of solitons propagating along vortex filaments and study the collision of two of such structures. Finally, we show numerically the experimental feasibility of studying vortex solitons in the lab, by proposing an experiment for their generation.
toXiv_bot_toot
Due to (waves hands) “life stuff” this dough had too much proofing time and it ain’t pretty but it turned out just fine for toasting.
#bread #baking #food
I sit in the sun and watch my children sift through the sand for green and amber (sometimes clear, white, or even blue) gems. Anywhere in the world you will find them, on any beach, the detritus of humans. Shardes of broken bottles, neglectfully thrown, turned by the waves into tiny magical treasures.
As our world shatters, I wonder what parts of it will be polished in the churning chaos that we may, with such childish joy, discover in a new and wondrous form.
For this #silentSunday I remembered one of our rare vacations to the sea.
I really like this photo. I feel like looking into the endless horizon, but still have a grounding element in the photo so that I'd never feel lost.
#photography
#Nithya #Raman,
a progressive urban planner,
entered Los Angeles politics with a bang when she was elected to city council in 2020,
defeating an incumbent Democrat endorsed by Nancy Pelosi and Hillary Clinton.
⭐️More than five years on, the 44-year-old is making waves again
with her last-minute…
Mallard making waves on a pond. Descanso Gardens, La Canada Flintridge, California, USA. December, 2025. OM System OM-1 M.Zuiko 90mm F3.5 Macro. #descansogardens #duck #mallard
Ubiquitous High-frequency Waves and Disturbances in the Active Region Corona Observed with Cryo-NIRSP: #CORONA STAYS SO HOT AND HOW THE SOLAR WIND IS LAUNCHED INTO SPACE.
Crosslisted article(s) found for physics.flu-dyn. https://arxiv.org/list/physics.flu-dyn/new
[1/1]:
- Physics Constrained Neural Collision Operators for Variable Hard Sphere Surrogates and Ab Initio ...
Ehsan Roohi, Ahmad Shoja-Sani, Stefan Stefanov
https://arxiv.org/abs/2602.21244 https://mastoxiv.page/@arXiv_physicscompph_bot/116135902638427987
- Chapman-Enskog expansion for chirally colliding disks
Ruben Lier, Pawe{\l} Matus
https://arxiv.org/abs/2602.21367 https://mastoxiv.page/@arXiv_condmatsoft_bot/116135969484479808
- Passive freeze-out of the Richtmyer-Meshkov instability
J. Strucka, et al.
https://arxiv.org/abs/2602.21375 https://mastoxiv.page/@arXiv_physicsplasmph_bot/116135979972070806
- A CFD-Based Investigation of Local Luminal Curvature as a Primary Determinant of Hemodynamic Envi...
Marcella P. A. Dallavanzi, Jos\'e L. Gasche, Iago L. Oliveira
https://arxiv.org/abs/2602.21409 https://mastoxiv.page/@arXiv_physicsmedph_bot/116135886905819251
- Unstable magnetic reconnection self-generates turbulence
Nick Williams, Alessandro De Rosis, Alex Skillen
https://arxiv.org/abs/2602.21422 https://mastoxiv.page/@arXiv_physicsplasmph_bot/116135995018666818
- Out-of-time-ordered correlators for turbulent fields: a quantum-classical correspondence
Motoki Nakata
https://arxiv.org/abs/2602.21710 https://mastoxiv.page/@arXiv_physicsplasmph_bot/116136015335973276
- Particle, kinetic and hydrodynamic models for sea ice floes. Part II: Rotating floes with nonline...
Quanling Deng, Seung-Yeal Ha, Jaemoon Lee
https://arxiv.org/abs/2602.21972 https://mastoxiv.page/@arXiv_mathph_bot/116136043517281861
- A consistent phase-averaged model of the interactions between surface gravity waves and currents
Jacques Vanneste, William R. Young
https://arxiv.org/abs/2602.21976 https://mastoxiv.page/@arXiv_physicsaoph_bot/116135993734282277
- Hydrodynamics of Dense Active Fluids: Turbulence-Like States and the Role of Advected Activity
Sandip Sahoo, Siddhartha Mukherjee, Samriddhi Sankar Ray
https://arxiv.org/abs/2602.22044 https://mastoxiv.page/@arXiv_condmatsoft_bot/116136069077151185
- Surrogate models for Rock-Fluid Interaction: A Grid-Size-Invariant Approach
Pinheiro, Guo, Menke, Joshi, Heaney, ElSheikh, Pain
https://arxiv.org/abs/2602.22188 https://mastoxiv.page/@arXiv_csLG_bot/116136497040052377
toXiv_bot_toot
the adventures of electric man (aka acid man), by al jarnow, 1966, whose origin story involved getting zapped during the nyc blackout of '65. dad sez there's a version with finished dialogue somewhere, but i haven't found it yet. a future episode maybe included a wizard named "ergot."
If the world outside your window is vanishing, and given all that — \*waves vaguely\* — can I go back to bed?
Yeah, it’s Monday
!B
@… Y2k38 is the second wave. Bigger than Y2K because today everything is software — and everything depends on time. And as with second waves, most people don’t see it coming. We should change that.
Again thinking abt how beautiful the single melted steel brick from the World Trade Center is
Bright Fractional Single and Multi-Solitons in a Prototypical Nonlinear Schr{\"o}dinger Paradigm: Existence, Stability and Dynamics
Robert J. Decker, A. Demirkaya, T. J. Alexander, P. G. Kevrekidis
https://arxiv.org/abs/2602.17175 https://arxiv.org/pdf/2602.17175 https://arxiv.org/html/2602.17175
arXiv:2602.17175v1 Announce Type: new
Abstract: In the present work we explore features of single and pairs of solitary waves in a fractional variant of the nonlinear Schr{\"o}dinger equation. Motivated by the recent experimental realization of arbitrary fractional exponents, upon quantifying the tail properties of such coherent structures, we detail their destabilization when the fractional exponent $\alpha$ acquires values $\alpha<1$ and showcase how the relevant destabilization is associated with collapse type phenomena. We then turn to in- and out-of-phase pairs of such waveforms and illustrate how they generically exist for arbitrary $\alpha$ when we cross the harmonic limit, i.e., for $\alpha>2$. Importantly, we use the parameter $\alpha$ as a ``bifurcation parameter'' in order to connect the harmonic ($\alpha=2$) and biharmonic ($\alpha=4$) limits. Remarkably, not only do we retrieve the instability of all solitonic pairs in the biharmonic case, but showcase a stabilization feature of particular branches of such multipulses that is {\it unique} to the fractional case and does not arise -- to our knowledge -- for integer multi-pulse settings. We explain systematically this stabilization via spectral analysis and expand upon the implications of our results for the potential observability of fractional multipulse solitary waves.
toXiv_bot_toot
It's wild to me how funding in our country works. Untold billions (if not trillions) for police and ICE. Billions in funding for the dumbest of AI ideas. But basic science? My wife is scrambling to get less than a million dollars of funding to do studies on heat waves that could help save millions of lives.
Remember heat waves? The kind of thing that will only become more frequent and deadly as we fail to curb our carbon emissions?
🇺🇦 #NowPlaying on BBCRadio3's #RoundMidnight
Tim Garland & Geoffrey Keezer:
🎵 The Waves Between
#TimGarland #GeoffreyKeezer
Envision starting your day with the calming rhythm of ocean waves or the soft rustle of a mountain breeze, all while savoring your coffee without a care in the world. ☕️🏞️ Retirement isn't merely the end of work; it's the beginning of life's most cherished experiences and thrilling adventures. Let's forge a future where every day feels like living the dream! #DreamAgain #RetirementBliss
"My predecessor had many opportunities to take this action, but did nothing."
Takes action; is beset by waves of terrible, if predictable, secondary effects.
Like waves against my
Waning sanity, Canvas
Crashes on and on.
#haiku #AcademicChatter
Weekend #Plankton Factoid 🦠🦐
Light🕯 is important to the holiday season, so how about a story on bioluminescence? Japanese soldiers during WW2 harvested the ostracod Vargula hilgendorfii "umi-hotaru sea firefly" and dried them. Water was added to a jar for use as glowsticks to discretely read maps. Hakai magazine has a wonderful bioluminescence article, including details on Osamu Sh…
For #monochromeMonday and #mountainmonday I chose this one!
I took this photo on a snow shoe tour a while ago. That day, I didn't even want to go that far, but it went all well and the views were just beautiful and the whole surrounding was just pure silence.
on:
Wow, this storm is coming through it short sharp waves!
A good article from James Meadway on the real vulnerability of the UK economy and UK households.
Globalisation is under threat from Iran war – and Britain is uniquely vulnerable | US-Israel war on Iran | The Guardian
https://www.theguardian.com/world/2026/mar
Maybe one of the more surprising things about the current live coding waves is how queer-lead it has become. I wouldn't have said it was ever particularly masculine/macho, but live coding was very cis male-dominated and hetronormative in the early days. Now as far as I know all the people blowing up on tiktok and instagram are LGBQT, and the most active live coding software and community platforms for music and visuals include LGBQT people leading core development (I say leadership here …
Crosslisted article(s) found for q-bio.CB. https://arxiv.org/list/q-bio.CB/new
[1/1]:
- Optical Manipulation of Erythrocytes via Evanescent Waves: Assessing Glucose-Induced Mobility Var...
T. Troncoso Enr\'iquez, J. Staforelli-Vivanco, I. Bordeu, M. Gonz\'alez-Ortiz
Sonnet 060 - LX
Like as the waves make towards the pebbled shore,
So do our minutes hasten to their end;
Each changing place with that which goes before,
In sequent toil all forwards do contend.
Nativity, once in the main of light,
Crawls to maturity, wherewith being crowned,
Crooked eclipses 'gainst his glory fight,
And Time that gave doth now his gift confound.
Time doth transfix the flourish set on youth
And delves the parall…
Adaptive transitions in FitzHugh-Nagumo networks with Hebb-Oja coupling rules
Astero Provata, George C. Boulougouris, Johanne Hizanidis
https://arxiv.org/abs/2602.18198 https://arxiv.org/pdf/2602.18198 https://arxiv.org/html/2602.18198
arXiv:2602.18198v1 Announce Type: new
Abstract: Adaptive coupling in networks of interacting neurons has gained recent attention due to the many applications both in biological and in artificial neural networks, where adaptive coupling or synaptic plasticity is considered as a key factor in learning processes. In the present study, we apply adaptive connectivity rules in networks of interacting FitzHugh-Nagumo oscillators. Adaptive coupling, here, is realized via Hebbian learning adjusted by the Oja rule to prevent the network link weights from growing without bounds. Numerical investigations demonstrate that during the adaptation process the FitzHugh-Nagumo network undergoes adaptive transitions realizing traveling waves, synchronized states and chimera states transiting through various multiplicities. These transitions become more evident when the time scales governing the coupling dynamics are much slower than the ones governing the nodal dynamics (nodal potentials). Namely, when the coupling time scales are slow, the network has the time to realize and demonstrate different synchronization regimes before reaching the final steady state. The transitions can be observed not only in the spacetime plots but also in the abrupt changes of the average coupling weights as the network evolves in time. Regarding the asymptotic coupling distributions, we show that the limiting average coupling strength follows an inverse power law with respect to the Oja parameter (also called "forgetting" parameter) which balances the learning growth. We also report abrupt transitions in the asymptotic coupling strengths when the parameter related to adaptive coupling crosses from fast to slow time scales. These findings are in line with previous studies on spiking neural networks.
toXiv_bot_toot
Brain Waves Defining The Limits of 'You'
Parietal alpha frequency shapes sense of body ownership by modulating temporal integration of bodily sensory signals
Parietal alpha frequency shapes own-body perception by modulating the temporal integration of bodily signals🧪
https://www.nature.com/articles/s41467-025…
Let’s raise a glass to 2026, the year of more billionaire trash!
#Billionaire #Trillionaire #Rich
Help! I've lost the horizon!
#beach
#fog
High partial waves contribution in calculations of the polyvalent atoms
M. G. Kozlov
https://arxiv.org/abs/2603.11985 https://arxiv.org/pdf/2603.11985
Scattering theory of spin waves by lattice dislocation defects
Cristobal Larronde, Ignacio Castro, Alvaro S. Nunez, Roberto E. Troncoso, Nicolas Vidal-Silva
https://arxiv.org/abs/2602.09546
Spatially resolved polarization swings in the supermassive binary black hole candidate OJ 287 with first Event Horizon Telescope observations: #EventHorizonTelescope observations of OJ 287 reveal shock waves interacting with Kelvin-Helmholtz instabilities in the jet, producing polarization rotations in opposite directions.
Search for continuous gravitational waves from neutron stars in five globular clusters in the first part of the fourth LIGO-Virgo-KAGRA observing run
Damon H. T. Cheung, Keith Riles, Rafel Amengual, Preet Baxi, Alicia Calafat, Anamaria Effler, Tabata Aira Ferreira, Evan Goetz, Tom Kimpson, David Keitel, Alan M. Knee, Joan-Rene Merou, Quynh Lan Nguyen, Joseph O'Leary, Ornella J. Piccinni, Alicia M. Sintes, Karl Wette
Lower-cost drones reaching the battlefield range in size, cost and abilities.
The Shahed and LUCAS,
which each cost about $35,000,
are roughly 10 feet long
with an eight-foot wingspan,
and carry an explosive payload in their nose
that detonates on impact.
After a target’s coordinates are entered, the drones can travel hundreds of miles autonomously.
Looking something like a miniature fighter jet, they occupy a middle ground between the tiny h…
I sometimes use self deprecation to tell you "don't llisten to me, I'm no academic...or am I? I don't think I am one!"
so that you won't listen to me if you have strong feelings about what I talk about.
But who make the real waves from their ripples if nobody gets upset or interested in what you gotta say?
Right?
Neurodiversity so far are only small ripples but when are they going to turn into waves?
💡
External magnetic field influence on massive binary black hole inspiral gravitational waves and its similarity with environmental effects
Xulong Yuan, Xiangdong Zhang
https://arxiv.org/abs/2603.05084
The city waves Goodbye as we leave for the airport. 👋
(shot from inside a moving car)
#travel #Germany #Deutschland #Bavaria #windmills #sunrise #photography #amateur
🇺🇦 #NowPlaying on BBCRadio3's #ThroughTheNight
Mieczyslaw Karlowicz, Polish National Radio Symphony Orchestra & Andrzej Straszynski:
🎵 Returning waves [Powracajace fale] - symphonic poem
#MieczyslawKarlowicz #PolishNationalRadioSymphonyOrchestra #AndrzejStraszynski
"Nicki Minaj says she's Trump's number one fan"
Seems like an odd time [waves hands around] to say that out loud. Makes me wonder what she's angling for. A pardon? For whom? An ambassadorship?
#NickiMinaj #artists #fandom #timing
🇺🇦 #NowPlaying on KEXP's #AstralPlane
Bingo Miki & The Inner Galaxy Orchestra:
🎵 When Waves Sing
#BingoMiki #TheInnerGalaxyOrchestra