franco_vazza

franco_vazza, 4 days ago (edited 2 days ago) to Julia

How a rich cluster of galaxies is born in an Enzo simulation by former PhD Stud. Matteo Angelinelli, rendered in #Julia
#SimulatedUniverses #astronomy #astrodon

franco_vazza, 8 days ago to Astro

#SimulatedUniverses :
cosmic rays injected by different processes in my simulation - zoom into a void surrounded by filaments.
ENZO simulations on LEONARDO cluster at CINECA.
#astrodon #astronomy

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franco_vazza, 12 days ago to art

In other news, I went full "Stendhal syndrome" in front of the stained glasses within the Cathedral of Lausanne, which are just breath taking.

https://www.cathedrale-lausanne.ch/fileadmin/groups/15/Cathedrale_2019/Rose/ROSE_CATHEDRALE_LAUSANNE_DEPLIANT_ANGLAIS.pdf
The pics do not give the real impression, which is 😱

#Lausanne #art

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franco_vazza, 12 days ago to Astro

As expected, there really was tense discussion yesterday.

Like, someone shouted at me during coffee break, with a lot of "f**k" involved and people around like 😱 .

After, he apologised and we decided we can still be friends outside of astronomy.👍

Also played table tennis vs the one who gave a talk explicitly to dismantle my conclusions of the day before.
Scientists are like 🤷‍♂️

I'd put all this into the basket of the good human interactions I had in life!

#astrodon #astronomy #academic

franco_vazza, 14 days ago to Astro

#acedemic #academicchatter

Fun things that can happen at a conference: tomorrow there will be a heated discussion about the correct way to remove a foreground from an extragalactic observation - the sort of life and death fights you have in astronomy 😅

But guess how many experts in the actual observation and foreground modelling are present at this conference:

ZERO.

So chairs are likely going to be thrown for nothing...

And I blame magnetic fields for this.

#astrodon #astronomy

franco_vazza, 15 days ago to Astro

Cool to have the same colleagues arguing about a question they already debated a year ago (conference I organised back then) , getting to the same standstill, as if they had no chance of exchanging mails in a year 🙄
#astrodon #astronomy

franco_vazza, 15 days ago to Astro

#WhatAboutMagneticFields ?
some people gathered this week (actually, also in the past few weeks, but that's the only one I am attending) at the Bernoulli Centre in Lausanne to know more...
#astrodon #astronomy

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franco_vazza, 18 days ago to Astronomy

#SimulatedUniverses
#astronomy

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franco_vazza, 19 days ago to Astro

Non-thermal energy components evolving from z=4 to z=0 in the last of my #SimulatedUniverses
The combination of all these, for the case of relativistic electrons, gives the total synchrotron emission from the cosmic web, from galaxies to filaments.

#astrodon #astronomy

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franco_vazza, 20 days ago to random

A few stunning images just released in papers from the @ec_euclid consortium:

1. this from https://pubs.euclid-ec.org/public/coordinated_release/PUBateketal.pdf

#astrodon #astronomy

franco_vazza, 20 days ago to mastodon

It is annoying in #mastodon to still keep missing a lot of interesting posts by people in my list, which live in an almost specular time zone. although I have put them in dedicated lists, if I forget to check them regularly, their stuff is just lost to me.
So the only thing is to click on the 🔔 for each of such profiles. That however messes up with the notifications.
ffff....

#astrodon

franco_vazza, 22 days ago to Astronomy

#astronomy #astrodon

opening of the Application process for 17 PhD positions in Astrophysics at the University of Bologna, to begin in november 2024.

https://www.unibo.it/en/study/phd-professional-masters-specialisation-schools-and-other-programmes/phd/2024-2025/astrophysics

Deadline to apply:
💥 17 June 2024 💥

please share

#academic

franco_vazza, 22 days ago (edited 22 days ago) to Astro

Reasonably proud of seeing the data in my new suite of simulations with ENZO:
the left panel shows the usual gas temperature, the right one shows the number density of cosmic ray electrons injected by star formation (red) and active galactic nuclei (green).

#SimulatedUniverses
#astrodon
#astronomy

franco_vazza, 23 days ago to Astro

#astrodon #astronomy
Italian PIs having fun with acronyms with foreign colleagues (I guess..)

🤔

"FEGA: The Impact of Positive AGN Feedback on the Properties of Galaxies in a Semi-Analytic Model of Galaxy Formation"

https://arxiv.org/pdf/2405.10544

#astroph

franco_vazza, 24 days ago to Astro

#SimulatedUniverses
Flashy distribution of many quantities in my latest ENZO runs on the LEONARDO supercluster at CINECA.

Of course, it moves ⬇️
#astrodon
#astronomy

franco_vazza, 26 days ago to Astro

Honestly, how sad is to end a semester course without an even small clapping?
It was a ~50h long performance...

#astrodon #academic

franco_vazza, 28 days ago to Astronomy

#solarstrom webcams from the mountains next to where I was born (Cansiglio in Veneto) got a nice coverage of the #aurora on the 10 of May.

#astronomy astrodon
https://webcam.io/webcams/zA2QRM

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franco_vazza, 29 days ago to Astronomy

#solarstrom new Coronal Mass Ejection (CME) on its way towards Earth, although producing a smaller event compared to last weekend.

https://www.spaceweatherlive.com/en/news/view/540/20240513-m6-6-solar-flare-with-earth-directed-cme.html

(Radio astronomer in the house is freaking out again because her observations must be rescheduled again 😬 )

#astronomy
#astrodon

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franco_vazza, 30 days ago to Astro

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

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franco_vazza, 30 days ago to Astro

Oh my, just look at this X-ray (Chandra) and radio (Meerkat) composite image of the centre of the Milky Way, by Mackey et al. (submitted to ApJ)!!

https://chandra.harvard.edu/photo/2024/vent/index.html

This is the press-release composite image of this paper:
https://arxiv.org/pdf/2310.02892

#astrodon #astronomy

franco_vazza, 1 month ago to Astro

This is an astrophysics take of the #solarstrom : I have just used the CosmicRay Detector app on my laptop by the Global Cosmic Ray Observatory https://apps.apple.com/us/app/cosmic-ray-detect-radiation/id1169131314

to measure the flux of muons through the blocked shutter of the Ipad.

I don't have stats to compare with, but since I have already done the same experiment in the last two weeks speaking of cosmic ray detection at lecture, I have the feeling the muon flux is a bit higher now (~1 event/second).

#astrodon #astronomy

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franco_vazza, 1 month ago to Astro

Correcting a student's thesis or article still is a good way to learn english, and especially to discover things you are used to say since decades are likely wrong.
Latest discoveries for me:

• difference between amount and quantity
• "meridional" vs "meridian"

#academic #astrodon

franco_vazza, 1 month ago to Astronomy

...Think I am going to move from extragalactic to galactic modelling...the quality of these recent multi-wavelengths composition of exploding stars in the Galactic plane (this one showed by Filomena Bufano at SPARCS) is jaw dropping

(sorry I could not get the full reference to this image - probably still WISE and ASKAP)

#astronomy #astrodon

franco_vazza, 1 month ago to Astro

Have you seen the Crab Nebula observed by LOFAR (including international stations, so higher resolution)?
I just did, at my SPARCS meeting:
gorgeous image by Maria Arias and collaborators:

#astrodon #astronomy

franco_vazza, 1 month ago to Astro

#SimulatedUniverses
simulated simultaneous evolution of magnetic fields and cosmic rays injected by the same growing galaxies in a small cosmic volume, with a recently developed version of the ENZO code, running on Leonardo @Cineca

#astrodon #astronomy

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