#astroph — Public Fediverse posts

Just finished going through the list of ~1200 papers on #astroph I was missing since 3rd of August. 😩

Saved about 12 for further reading, not too bad!

#astronomy #academ

no PDF to download from #astroph today?
well that's an easy way to digest the literature of the day, even if too bad because there also is a paper i was involved in.

#science #astrophysics

#paperday on #astroph:
another chapter contribution to the Advancing Astrophysics with the SKAII big collection of papers trying to outline what the SKA may and should be doing in a few years 🤞🏼

In this one I helped giving a sense of what might be detectable with a few different survey configurations for SKA-LOW and MID, on the scale of filaments of the cosmic web:

https://arxiv.org/pdf/2606.31503

"The Large-Scale Structure of the Universe through the
SKA lenses" by Cuciti et al.

#astrophysics

#paperday on #astroph
"An SKA-Low RM Grid for constraining the origin of cosmic magnetism" by S. O'Sullivan, myself and others

https://arxiv.org/abs/2606.25096

in one of the many contribution to the Advancing Astrophysics with the SKA II collection of works.

Here we discuss the many directions in which the SKA is going to improve our understanding of cosmic magnetism using its polarisation capabilities, to study the Faraday Rotation effect across the cosmic web

#cosmomag #astrophysics #astronomy

What happened to articles on #astroph it's the end of the world

😱

#academia #astronomy #astrophysics

Today on #astroph
"Magnetic fields at the dawn of structure formation I. The CARLA J1510+5958 proto-cluster" by A. Pagliotta @annalisa_bonafede et al.

https://arxiv.org/pdf/2606.12522

it presents a study of the CARLA J1510+5958 proto-cluster at z = 1.72 with the JVLA L-band to infer the strength of the proto-ICM and the role of AGN at this epoch, finding a B>0.4muG lower limit there.

#astronomy #astrophysics #science

On #astroph today:

"The ultra low-frequency spectral properties of bright extended radio galaxies in the 3CRR catalogue"
by J. Boxelaar et al.

https://arxiv.org/pdf/2606.13493

It presents an updated analysis of 22 sources observed with LOFAR and ASKAP to cover from 1400MHz to 58MHz, to model how electrons age along the lobes of FR I and II radio galaxies: simple ageing models seems to struggle in explaining most of radio structures.

#astronomy #astrophysics #science

#paperday on #astroph
"Isochrones in primordial magnetic field evolution"
by A. Brandenburg, Cielo, Iarygina & myself
https://arxiv.org/pdf/2606.10863

where we present Pencil simulations of the evolution of different stochastic magnetic field configurations in the early universe, with the goal of finding simple ways to rescale them to the same evolutionary sequence.

(submitted to A&A)

#COSMOMAG #astrophysics #physics #science

#paperday on #astroph:
"Galaxy clusters in the LoTSS-DR3:
Catalogues and detection pipeline for diffuse radio emission" by Chiara Stuardi et al. including me
https://arxiv.org/pdf/2605.06400

It presents the automated detection of diffuse radio emission in clusters observed in radio, using a Convolutional neural network (RADIO-UNET) trained on my #SimulatedUniverses !

Once in a while, a decent use of #AI to do something humans cannot do on this scale (as quickly).

#astrophysics #physics

#paperday on #astroph

"The Impact of the Magnetised Cosmic Web on Ultra High Energy Cosmic Ray Propagation" by Allegra Firinu, myself and Carmelo Evoli.

We investigated the role of realistic extragalactic magnetic fields in deflecting E>1e18eV cosmic rays, effectively creating "an horizon" beyond which particles cannot reach us, as they are trapped by magnetic fields.

https://arxiv.org/abs/2605.02324

#cosmoMAG #astrophysics #astronomy #physics

Two cool papers today in #astroph, related to our #COSMOMAG exploration:

https://arxiv.org/pdf/2604.25647
Intergalactic Magnetic Field constraints from detected very high-energy Gamma-Ray Bursts using the Cherenkov Telescope Array Observatory (Keita et al.)

https://arxiv.org/abs/2604.24835 JWST Constraints on Primordial Magnetic Fields (Fairbarn et al)

Both explore the upper and lower limits allowed for primordial fields in the Universe, with different effects.

#astronomy #astrophysics #physics

Beautiful relativistic MHD simulations of the initial stage of jets expansion, as a function of their different orientation with respect to the main axis of the halo of their host galaxy.
New simulations using the PLUTO code by G. Giri and collaborators today on #astroph
https://arxiv.org/abs/2604.05471
"Galactic-scale evolution of classical and complex radio galaxies. Impact of ambient morphology and jet geometry"

#astronomy #astrophysics #science

A new radio analysis of the double radio relic (=pairs of expanding merger shock waves, ~Megaparsec wide) in the merging cluster of galaxies MACS
J1752.0+4440
by M. Della Chiesa et al. today on #astroph https://arxiv.org/pdf/2604.02410

Deep multi-wavelength radio observations allow to study how radio emitting electrons age in different part of the relic, helping to better understand the plasma properties in regions deeply affected by shocks

#astronomy #astrophysics #science

https://mastodon.social/@franco_vazza/116328055383790715

Well let me at least point to one legit article today on #astroph, by my colleague here F. Ubertosi:

https://arxiv.org/abs/2603.28864
"AGN Fueling and Radio Jet Evolution in the Galaxy Group NGC 5044 revealed by VLBA HI Absorption and Proper-Motion Radio Observations"

which is a serious one.

(At least, I think?)

#astronomy #astrophysics #science

W-O-W

people really really were in the mood today on #astroph

I do not remember such an avalanche of "jokes".

to the point all other few serious articles in todays list are just going to be lost for me.

#astronomy #astrophysics #academia

I like this infographic showing different modalities of propagation for charged and neutral cosmic rays in the cosmic web, in this new article on #astroph

"The ‘Forgotten’ Neutrons: Implications for the Propagation
of High-Energy Cosmic Rays in Magnetized Astrophysical
and Cosmological Structures" by E. Owen et al. https://arxiv.org/pdf/2603.25060

#astronomy #astrophysics

this morning in #astroph
"The birth of the intracluster medium: the evolution of multiphase gas
and Lyman-α haloes in a simulated z ∼ 3 protocluster" by J. Bennet et al.

https://arxiv.org/pdf/2603.16991

a nice simulated view using Arepo of how the typical thermodynamical and chemical structure of the intracluster medium is first formed around z=3, through the interplay of accretions, galaxy and AGN activity.

#astrophysics #astronomy #physics

Very cool on #astroph by @giovanni_covone and A. Balbi:

" Photosynthetic exergy I. Thermodynamic limits for habitable-zone planets"

which proposes new upper limits on
photosynthetically harvestable power for planets in the habitable-zone

https://arxiv.org/pdf/2602.20789

#astronomy #astrophysics #science

When astronomers are discovering so many things that they run out of names:
meet the "red potato" 🥔 quiescient galaxy tracing a node of the cosmic web at redshift z=3

https://arxiv.org/pdf/2601.20473
by Wang et al.
today in #astroph

#astronomy #astrophysics #science

Spectacular X-ray spectroscopic coverage of the innermost regions of the outcome of AGN feedback in the Virgo cluster using XRISM by A. Simionescu et al. today in #astroph
"Dynamics of AGN feedback in the X-ray bright East and Southwest
‘arms’ of M87, mapped by XRISM"
https://arxiv.org/pdf/2601.16901
The amount of motions excited by AGN feedback is allegedly quite less than predicted by current cosmological simulations.
#astronomy #astrophysics #science

Interesting this morning on #astroph

"MeerKAT observations of Abell 1775 and Abell 1795: the discovery of a
hadronic radio halo?" by R. van Weeren et al.
https://arxiv.org/pdf/2601.16288
I am a bit puzzled but this might be the first case in which significant secondary emission (i.e. injected by secondary relativistic electrons resulting from hadronic collisions between cosmic ray protons and thermal protons) is found in a cluster of galaxies. Cool!

#astronomy #astrophysics #science

Awesome observations of fluid instabilities in the coronal mass ejection of plasma from our star, today in #astroph

"Observation of Large-Scale Kelvin-Helmholtz Instability Wave Driven by a Coronal Mass Ejection"

by Ofman et al.

https://arxiv.org/pdf/2512.19942

That's the kind of instability that the smoke of a cigarette would undergo...except it is on the scale of A DOZEN PLANET EARTHS

#astronomy #astrophysics #science

Stunning multi-scale radio images of radio galaxy tails in cluster Abell 2255 by E. De Rubeis et al.

https://arxiv.org/pdf/2512.19471

who combined LOFAR Very Long Baseline Interferometry (LOFAR-VLBI),
the upgraded Giant Meterwave Radio Telescope (uGMRT) and the Karl G. Jansky Very Large Array (VLA).

Incredible level of details in the fine interactions between old radio plasma and the surrounding intracluster medium, shaped by dynamics and probably cosmic rays

#astroph #astronomy #science

Astronomical clickbait titles to its finest 😅

"Nova Explosions in 2040"
https://arxiv.org/abs/2512.15821

we're soo doomed!

#astronomy #astrophysics #astroph #science

To be entirely honest, after about 20 papers spamming the initial list of #astroph today all with the initial title

"Why the northern hemisphere needs a 30-40 m telescope and the science at stake: bla"

I just developed an instinctive antagonism to the idea

(but luckily for science I am not in charge of deciding)

(sorry that's what aggressive spamming does to me 🙄 . but fingers crossed!)

#astronomy #astrophysics #science

RE: https://mastodon.social/@franco_vazza/115028085743064524

This new one is a solid
10.5/10
on the Loeb scale of how much annoying an astrophysics article can be;
10/10 for the content, and with an extra 0.5 for rushing submission to the very top of todays #astroph listing, well done!!

https://arxiv.org/abs/2512.13743

#astronomy #astrophysics

#paperday on #astroph
"The network analysis of the cosmic web as a tool to constrain
cosmology and cosmic magnetism"
by Anton Rudakovskyi, myself and M. Tsizh (@mtsizh )

https://arxiv.org/pdf/2511.22573

It's the exploration, using new (many) cosmological simulations, if the presence of large-scale primordial magnetic fields, or variations in the initial cosmological parameters, can be detected using #ComplexNetwork analysis of the cosmic web.
#science #astronomy #Ukraine 🇺🇦

A nice way to begin the discussion session of any paper 😅

(from https://arxiv.org/pdf/2511.22124) on #astroph

#astronomy #science

#paperday on #astroph:
"Simulated rotation measure sky from primordial magnetic fields" by S. Mtchedlidze, myself et al.

https://arxiv.org/abs/2511.19508

discussing the little explored use of the **average** Faraday Rotation from background polarised radio sources as a tool to constrain large scale (primordial?) magnetic fields in between galaxies and filaments.

#physics #astrophysics #astronomy

Today on #astroph: beautiful thermodynamical analysis of gas in galaxy cluster Abell 2597 by O. Omoruyi using Chandra:

https://arxiv.org/pdf/2511.13817

#astronomy #astrophysics #science