franco_vazza

franco_vazza, 17 hours ago to Astro

#solarstorm
I predict the next big cult of the Sun will be started by radio astronomers, whose life has become way too much dependent on the cycles of solar activity these days.
Human sacrifices of post-docs and phd will be the next step I guess. 😬
#astrodon #astronomy

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franco_vazza, 1 day 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

video/mp4

franco_vazza, 1 day ago to Astronomy

#astroph

Awesome work by F.Ubertosi (University of Bologna) using from LOFAR to VLBI radio observations (together with Chandra's X-ray obs.) to probe the feedback history of central galaxy in cluster RBS 797

https://arxiv.org/pdf/2405.08079

covering in radio from ~100kpc to ~10pc in scales (!) this study support the idea that the dynamics of this system is explained by a binary supermassive black hole merger

#astronomy #astrodon

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franco_vazza, 2 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, 2 days ago to photography

#radioastronomy Just two antennas!
Not even low frequency, just low on the ground
#photography

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franco_vazza, 3 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, 3 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, 3 days ago to random

incredible, #Bologna FC is currently 3rd in football's Serie A and has mathematically qualified for next year Champions league....traffic in the city is going to be fun in a few months.

franco_vazza, 5 days ago to Astro

This is an awesome professional website to check updates and physical measurements of the ongoing #solarstorm

https://www.swpc.noaa.gov/

#astrodon #astronomy

franco_vazza, 5 days 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, 5 days ago to Astronomy

#solarstrom : here a nice picture of the aurora over #Bologna (Italy), by Enrico Barelli

Hopes are it will repeat also this evening (it would be a first for me)

#astronomy #astrophotography

franco_vazza, 5 days ago to Astronomy

Approaching strongest #solarstorm of the decade!

https://www.npr.org/2024/05/10/1250515730/solar-storm-geomagnetic-g4

Normal people: what?

People with a passion in science: cool, I am going to look up in the sky all night!

Radio astronomers: desperately rushes to change the schedule of her incoming observation at the Very Large Array even before having breakfast.

#astronomy #astrodon

franco_vazza, 6 days ago to Astro

Nice artistic rendering of the full variety of diffuse radio emissions we can presently observed and simulated in clusters of galaxies, also when they appear in pairs.
Slide by G.Piagnataro (UNIBO) at the SPARCS meeting.

#astrodon #astronomy

franco_vazza, 6 days 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, 7 days ago to Astronomy

Awesome collection of FRII radio galaxies observed with the LOFAR LOTSS DR2 survey, just the cover picture in Martin Hardcastle's talk at SPARCS.

#astronomy #astrodon

franco_vazza, 7 days 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, 7 days ago to Astro

This superposition of Wise (infrared) and Askap (radio) images of a crowded fields with several pulsar wind nebulae in our Galaxies, just presented at SPARCS by Sanja Lazarevic, is just 😱

#astrodon #astronomy

franco_vazza, 7 days 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