Recent Advances in Radio Astronomy

A special issue of Galaxies (ISSN 2075-4434).

Deadline for manuscript submissions: 15 February 2026 | Viewed by 1303

Special Issue Editor


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CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710, Australia
Interests: AGN; radio-astronomy; gamma-ray astronomy; VLBI

Special Issue Information

Dear Colleagues,

The last decade has been a golden era for radio astronomy, with new telescopes commissioned, existing facilities upgraded, and future developments planned. This has brought with it new capabilities and opened new areas of research in fields such as survey science, time domain studies, Very-Long-Baseline Interferometry, and spectral line studies. This Special Issue will focus on these new facilities, the science they are enabling, and the opportunities for multi-wavelength studies. Papers related to new instrumentation, new methods and techniques, and new lines of research are particularly welcomed.

References: Recent papers published in Galaxies that illustrate the journal scope and that are aligned with the themes of this Special Issue include the following:

“Key Science Goals for the Next-Generation Event Horizon Telescope” M.D. Johnson et al., 2023, Galaxies, 11, 61

“Overview of the Observing System and Initial Scientific Accomplishments of the East Asian VLBI Network (EAVN)” K. Akiyama et al., 2022 Galaxies, 10, 113

Dr. Phil Edwards
Guest Editor

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Keywords

  • instrumentation
  • techniques
  • radio continuum
  • radio line
  • submillimetre
  • surveys
  • time domain

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Published Papers (1 paper)

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Research

18 pages, 30275 KB  
Article
RAD@home Citizen Science Discovery of Two Spiral Galaxies Where the 30–220 kpc Radio Lobes Are Possibly Shaped by Ram Pressure Stripping
by Prakash Apoorva, Ananda Hota, Pratik Dabhade, P. K. Navaneeth, Dhruv Nayak and Arundhati Purohit
Galaxies 2025, 13(5), 98; https://doi.org/10.3390/galaxies13050098 - 22 Aug 2025
Viewed by 376
Abstract
We report the RAD@home citizen science discovery of two rare spiral-host radio galaxies (NGC 3898 and WISEA J221656.57-132042434.1 or RAD-“Thumbs up” galaxy), both exhibiting asymmetric radio lobes extending over 30 to 220 kiloparsec scales. We present a multi-wavelength image analysis of these two [...] Read more.
We report the RAD@home citizen science discovery of two rare spiral-host radio galaxies (NGC 3898 and WISEA J221656.57-132042434.1 or RAD-“Thumbs up” galaxy), both exhibiting asymmetric radio lobes extending over 30 to 220 kiloparsec scales. We present a multi-wavelength image analysis of these two sources using radio, optical, and ultraviolet data. Both host galaxies are young, star-forming systems with asymmetric or distorted stellar disks. These disks show similarities to those in galaxies undergoing ram pressure stripping, and the radio morphologies resemble those of asymmetric or bent FR-II and wide-angle-tailed radio galaxies. We suggest that non-uniform gas density in the environment surrounding the ram pressure-stripped disks may contribute to the observed asymmetry in the size, shape, and brightness of bipolar radio lobes. Such environmental effects, when properly accounted for, could help explain many of the non-standard radio morphologies observed in Seyfert galaxies and in recently identified populations of galaxies with galaxy-scale radio jets, which are now being revealed through deep and sensitive radio surveys with uGMRT, MeerKAT, LOFAR, and, in the future, SKAO. These findings also underscore the potential of citizen science to complement professional research and data-driven approaches involving machine learning and artificial intelligence in the analysis of complex radio sources. Full article
(This article belongs to the Special Issue Recent Advances in Radio Astronomy)
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