#paperday — Public Fediverse posts

#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

#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 🇺🇦

#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

#paperday:

"Can galactic magnetic fields diffuse into the voids?"
(answer: NO!)

https://arxiv.org/abs/2510.26918 by O. Ghosh et al., (including me) on #astroph today .

It is a necessary rebuttal to a recent paper (https://arxiv.org/abs/2505.14774) who claimed the possible magnetisation of voids by propagating a dipole solution for the magnetic fields of galaxies, assuming cosmic voids are textbook "vacua"
Not good at all!

#astronomy #astrophysics #science #physics

#paperday : "On the nature of #LOFAR RMs and new constraints on magnetic
fields in cosmic filaments and on magnetogenesis scenarios" by Ettore Carretti, myself and others, using Faraday Rotation in LOFAR to detect plausible evidences of **primordial** cosmic magnetic fields!

https://arxiv.org/pdf/2411.13499

accepted and in publication by A&A

#astronomy #astrodon #science

#paperday alert 💥
"Intergalactic medium rotation measure of primordial magnetic fields" by Salomé Mtchedlidze (post-doc in my group) et al.
today on #astroph and submitteed to ApJ
https://arxiv.org/pdf/2406.16230
It presents extended new simulations of different possible primordial models for cosmic magnetic fields (scale invariant, uniform or causally generated) and compares their prediction for the intergrated Faraday Rotation up to large redshift.

#WhatAboutMagneticFields #astrodon #astronomy

#paperday on #astronomy

"Constraining the astrophysical origin of intergalactic magnetic fields" https://arxiv.org/abs/2311.04273

by J. Tjemsland, M. Meyer, myself.

It is a new revised take on the use of γ-ray observations of the spectrum of blazars, to constrain the origin cosmic magnetism: from primordial mechanisms in the very early Universe, or instead from galaxy and active galactic nulclei?

[spoiler: probably the first]

#Astrodon #astronomy
#WhatAboutMagneticFields

#PaperDay

The large scale velocity field from the Cosmicflows-4 data

https://arxiv.org/abs/2311.01340

#cosmology #cosmography #cosmicflows #astronomy #astrophysics #astrodon #arxiv #space #science #research #publication #mnras