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#pulsar

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On this day fourteen years ago, on 6 April 2011, the second radio pulsar discovered with @einsteinathome was published.

Our distributed computing project had started almost exactly two years earlier to analyze data from the Arecibo radio telescope with the help of tens of thousands of volunteers.

This second discovery was special: the pulsar orbits the common center of mass with a white dwarf in just 9.4 hours and it belongs to a rare “species”.

ℹ️ aei.mpg.de/191149/einstein-hom

📄 iopscience.iop.org/article/10.

At the time, it was assumed that this pulsar could be used to observe relativistic effects. This was finally achieved in 2022 after many more observations: aanda.org/articles/aa/full_htm

www.aei.mpg.deEinstein@Home detects unusual stellar pair

🗣️ #Pulsar "Podkast 86. Hołyst, Biecek, Sienkiewicz: Czas rozproszyć toksyczną mgłę

Trudności w podejmowaniu decyzji, łatwość popełniania błędów, niechęć do uczestnictwa w życiu społecznym, skłonność do jego radykalizacji – oto skutki smogu informacyjnego. Jak zacząć go badać? Jak zwalczać? Wyjaśniają prof. Janusz Hołyst i dr. inż. Julian Sienkiewicz, fizycy z Politechniki Warszawskiej oraz prof. Przemysław Biecek, badacz sztucznej inteligencji z Politechniki Warszawskiej i Uniwersytetu Warszawskiego."

projektpulsar.pl/struktura/224

YouTube:
youtube.com/watch?v=jAaPueBYV7

Invidious:
inv.nadeko.net/watch?v=jAaPueB

POLITYKA Sp. z o.o. S.K.A · Podkast 86. Hołyst, Biecek, Sienkiewicz: Czas rozproszyć toksyczną mgłęBy Karol Jałochowski

The planets can be observed not only in visible light but also in the radio range! The first attempts at radio observations of planets began in 1954 when intense radio bursts from Jupiter were detected. This radiation did not come directly from the planet but from processes in its magnetosphere.

#FunFact: Jupiter's magnetic field is massive, even relative to the size of the planet itself – it extends over 650 million kilometers (to the orbit of Saturn!) and is 4000 times stronger than Earth's magnetic field. 🚀🌍 A pulsar's magnetic field, however, can be up to 100 trillion times stronger than Jupiter's!

Radio waves penetrate deep into planet atmospheres or the surface, providing us with information that cannot be obtained through other methods. For example, phase fluctuations in the radio emissions were detected on the Moon and Mercury. On Mars, high electrical conductivity in the soil due to iron oxides was detected.

#funfact Radio astronomy amateurs assure that Jupiter can also be "received" and "heard" at home. All you need is a radio receiver for radio waves in the 18 to 22 MHz range and an antenna specifically designed for this frequency range. 📡

📷 Radiation belts of the planets, NASA, JPL, NASA/AP | Collage: A. Kazantsev.

A pulsar is a rotating neutron star that emits electromagnetic radiation in regular pulses. The radiation can be in the form of radio waves, x-rays, and gamma rays
#OTD #TDIH #Jan20

1969 – The first pulsar is discovered, in the Crab Nebula.

#Pulsar #Nebula #Science #History #DistractingStuff
snexplores.org/article/scienti

Science News Explores · Scientists Say: PulsarThese rapidly spinning dead stars send beams of radio waves into space like cosmic lighthouses.

1-
#introduction #introductionFR
Bonjour, nouveau ici :)
Je cherche un réseau plus proche de mes valeurs #HelloQuitX
Pas très bavard sur les réseaux sociaux... Je suis freelance en création de site web / Webdesigner depuis 2012. Je travaille principalement avec des outils libres / Open Source, pas toujours simple dans ce taf selon mes clients/agences je vous l'accorde 😅

#inkscape #gimp #pulsar #firefox #keepassXC #thunderbird #debian #xmpp ... sont mes amis au quotidien

#DidYouKnow: A #Pulsar (from pulsating radio source) is a highly magnetized rotating #Neutron #Star that emits beams of electromagnetic radiation out of its magnetic poles.

The periods of pulsars make them very useful tools for astronomers. In 1983, certain types of pulsars were detected that at that time exceeded the accuracy of atomic clocks in keeping time.

The first #PulsarClock in the world was installed in St Catherine's Church, Poland, in 2011.

knowledgezone.co.in/kbits/60a6

It's #Pulsar confirmation day!

Then PhD student, Jocelyn Bell Burnell, actually detected the first signals from a pulsar on 6 Aug '67. From those results, Queen JBB connected the dots, this was astrophysical!

But after this first detection in Aug, there was nothing.

Until Nov 28.

Bell Burnell didn't give up in the meantime. She kept searching for the pulsar, and it was through her hard work, dedication, and persistence that the 28 Nov. confirmation came in.

The 'little bits of scruff' returned! Astrophysics changed forever.

Read more: spaceaustralia.com/feature/55-

Unfortunately, she never received the Nobel Prize for this. A huge scar on the awards, to this day.

📸 CSIROpedia

lots of fun #pulsar papers on arXiv today - but this is my fav (biased of course, some of these folks in our team, though this is not PPTA paper).

Pulsar radio waves are scattered off turbulent ISM plasma structures (<= AU-sized) and present as scintillation arcs in power spectra analysis. What that means is that when we plot the spectrum over time, we can look at the power of that spectrum and we see these scintillation arcs - they are like ghosts inside the data!

BUT - they tell us things!

Arc curvature depends on distance, velocity, and orientation of scattering layers, so it can help probe these parameters.

This was analysed for PSR J0437-4715 (closest and brightest millisecond pulsar to Earth) so the team modelled the pulsar-WD binary system ploughing through the ISM.

Look at its bow-shock! From this model, they can see that the conical structure is tilted away from our view by about 23-degrees, and is caused by the pulsar moving (very fast) through the interstellar medium.

In that second plt we can't see the pulsar (it's ~20km across), but that bright dot is the white dwarf companion. They're in a 5.7 day orbit, so effectively, from this distance we can say that the pulsar is in the same location.

Check out the paper here: arxiv.org/abs/2410.21390

Made a series of short fun fact vids (under 90 secs each) that take a complex astrophysical object - a #pulsar
- and compare it to everyday objects ... like your blender!

Hopefully people enjoy these small chunk-sized bites!

And .... am gonna be puttng a little personal touch on these, with the backing tracks being 80s and 90s bangers, that are somewhat related. In this series, am looking at which spins faster - a pulsar or your blender at home. So naturally:

🎵: 'You Spin Me Round (Like a Record)' - Dead or Alive

Catch them over on Insta, they're under 90s each! 👇

Part 1 - instagram.com/p/DBXKEe4JfeC/?h

Part 2 - instagram.com/p/DBXLWg_pkdz/?h

Part 3 - instagram.com/p/DBXML3spVCB/?h

Part 4 - instagram.com/p/DBXM7xGJfjn/?h

so i just switched from a (dead) pulsar x2h mini to a logi g305 as my desk mouse, and it's just throwing me how much heavier this mouse is

i also got very used to the hump placement on the x2h, which was closer to my wrist than the standard center placement, that's also throwing me a bit

but, is it just me or does logi just ship crappy skates compared to razer and pulsar

Pulsar is a community-led hyper-hackable text editor based off the discontinued Atom editor. Some features include cross-platform editing, built-in package manager, smart autocompletion, a file system browser, support for multiple panes, and find and replace.
pulsar-edit.dev/
github.com/pulsar-edit/pulsar

Pulsar 1.120.0 was released on August 17, 2024.
pulsar-edit.dev/blog/20240817-

#linux#pulsar#text

#JWST is often cited for its amazing work with galaxies, BUT LOOK AT IT DISSECTING UP THE CRAB NEBULA AND SHOWING US STAR GUTS FROM A 1000-YEAR OLD STELLAR DETONATION.

Wow! Look at the pulsar!

So epic that we can see this detail, the different structures, elements, velocities, energies, etc. from an event that Chinese and Japanese astronomers witnessed and documented 1000 years back.

We're connected through time with this event to them!

arxiv.org/abs/2406.00172

I've been trying out #Pulsar text editor for #Python things. It is a spiritual successor of the wonderful #AtomIDE and I would love to use it, but for whatever reason basic things are not working properly. Terminal, linting, and selecting the proper interpreter are not working after a base installation. Warning messages lead nowhere, making it impossible to troubleshoot things.

Looks like I'll try #VSCodium next.

Der Atom-Editor lebt – und heißt jetzt Pulsar

Im Juni vor zwei Jahren killte GitHub den Editor Atom, den sie selber mal mit großem Tam-Tam als den »Editor für das 21. Jahrhundert« angekündigt hatten. Auch wenn das die meisten nicht (mehr) überrascht hatte – GitHub war 2018 von Microsoft gekauft worden, Microsoft hat mit Visual Studio Code einen eigenen Editor im Portfolio, und Microsoft liebt Monokulturen –, bedauerten doch viele diesen Schritt. kantel.github.io/posts/2024031 #Texteditor #Pulsar

Whoa, new DECam image of the Vela Supernova Remnant is stunning! 🤩

Check out how far away the Vela pulsar, one of the brightest radio pulsars in the sky, is.

That’s because asymmetrical forces during core collapse ‘kick’ the pulsar away from the supernova location!

This pulsar, which is relatively close to Earth, was born in this supernova about 11,000 years ago. So it has moved away from the remnant after its natal kick after all these years.

All of that nebulous material is star guts from the original star.

Listen to Vela pulsar here! (sound like a diesel engine to me!)

parkes.atnf.csiro.au/people/sa

📸 CTIO/NOIRLab/DOE/NSF/AURA

Ohhh, some exciting astro news!!! 👀👀👀

A new paper has found more evidence for a neutron star in the supernova 1987A remnant using JWST's MIRI/MRS and NIRSpec/IFU!

science.org/doi/10.1126/scienc

However, a secondary paper from a few days back, which also used JWST MIRI, found no evidence of the compact remnant in their data: arxiv.org/html/2402.14014v1

Almost 2 years ago I wrote a feature article looking at the evidence for this, so these new papers and findings are exciting!

spaceaustralia.com/feature/did

📸 Fransson et al. / Bouchet et al.