@hfalcke@mastodon.social avatar

hfalcke

@hfalcke@mastodon.social

Prof. Astrophysics, columnist D/NL, bestseller author “Licht im Dunkeln/Light in the Darkness/Licht in de duisternis” about the first ever image of a black hole shadow with the Event Horizon Telescope, that I was deeply involved in. Work at Radboud University, Nijmegen (NL), live near Cologne (D). Am a happy European, Christian, dad, and granddad.

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hfalcke, to random German
@hfalcke@mastodon.social avatar

Ich bin mal gespannt wieviele völlig überraschende Jahrhundertfluten ich in diesem Jahrzehnt noch erleben werde 🤔🤷🏼‍♂️

#Flutkatastrophen #Überschwemmungen #Klima #Klimawandel

vicgrinberg, to random
@vicgrinberg@mastodon.social avatar

Have found out today that (not very close) relatives (and their kids - and the kids they took care of at that moment, they run a childcare thing) in Canada have been victims of a hate crime (a while ago, it took a while to reach me), prompting them to give up on the childcare business thing.

I just feel freaking empty.

hfalcke,
@hfalcke@mastodon.social avatar

@vicgrinberg Das ist einfach nur falsch 😔

franco_vazza, to Astro
@franco_vazza@mastodon.social avatar

Sources of magnetic fields appear in this universe - which just samples the first ~1/10 of evolution of a big 2048^3 simulations running on LEONARDO at CINECA (using a customised version of the ENZO code), and it just samples a thin slice through the simulation.

Magnetic field strength on the left, gas density on the right.
The injection of magnetic fields here only follows the onset of star formation (and later on of active galactic nuclei).

#SimulatedUniverses
#astrodon #astronomy

video/mp4

hfalcke,
@hfalcke@mastodon.social avatar

@franco_vazza So, what is the most likely origin of cosmic magnetic fields and where can I read about it. (Asking for a friend who is writing a book).

hfalcke,
@hfalcke@mastodon.social avatar

@franco_vazza that is very interesting and extremely useful. It will take some digesting. The book will be very general, so not all those details can be covered, but the basic question of where the magnetic fields that protect us in our atmosphere come from ultimately is a very interesting one. it could be as complex as the formation of the planet itself, and have the same fundamental origin.

hfalcke, to random
@hfalcke@mastodon.social avatar

There are days when you really don’t want to look at Mastodon. What a terrible place today. Everybody and their brothers and sisters are posting their pictures of the #aurora. I have never seen one and when I went outside it was cloudy🙄. I will probably take a break and check in again when this “storm” is over … 😭

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