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Resolve small-scale radio spectral variations in Teleios

Characterize smaller-scale radio-continuum spectral variations within Teleios (G305.4–2.2) by performing deeper, multi-frequency observations capable of resolving fine spatial structures and determining local spectral indices across the shell and interior.

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Background

The current analysis could not assess small-scale spectral variations due to low signal-to-noise, missing short spacings, and contamination by Galactic background structure. Such variations can reveal shock microphysics, magnetic field geometry, and potential thermal contamination.

Future high-sensitivity observations (e.g., with MeerKAT) would enable spatially resolved spectral diagnostics across Teleios.

References

The smaller-scale radio-continuum variations in the spectra can not be determined at this time, without more sensitive observations such as the upcoming MeerKAT observations.

— Teleios (G305.4-2.2) -- the mystery of a perfectly shaped new Galactic supernova remnant (2505.04041 - Filipovic et al., 7 May 2025) in Section 3.2.1 (Radio spectral index)