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Alessandro Ignesti

@a-ignesti.bsky.social

221 followers 521 following 3 posts

Ph.D. in Astrophysics. Post Doc atASU, Prague. I study stuff in galaxy clusters. More at aignesti.github.io

Alessandro Ignesti @a-ignesti.bsky.social · 14/07/2026

#paperday We present a MeerKAT study of HI+radio continuum emission in 61 nearby cluster galaxies. This selection allows us to intercept a population of galaxies experiencing the very early stages of environmental processing. More at arxiv.org/abs/2607.11426

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Alessandro Ignesti @a-ignesti.bsky.social · 26/02/2026

#paperday #Extragalactic What determines whether a galaxy can become a jellyfish galaxy? Thanks to new Meerkat data, we now propose that this may be due to a combination of supersonic orbits and interactions with the magnetic field of the galaxy cluster. More at arxiv.org/abs/2602.21821

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Alessandro Ignesti @a-ignesti.bsky.social · 12/11/2024

#paperday We have used the gas trails of jellyfish galaxies to trace the ICM small-scale motions. We find a turbulence-like spectrum extending below the expected ICM dissipation scale, suggesting that the ICM viscosity is less than 10% of the Spitzer value. More at arxiv.org/abs/2411.07034

GASP jellyfish galaxies. More at https://web.oapd.inaf.it/gasp/

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