On: “Odd Radio Circles” have astronomers excited

[h2odragon]

paper: https://arxiv.org/pdf/2006.14805.pdf

> Frequency range: 800 – 1088 MHz > Total integration time: 100 hours

but then

> We observed ORC 1 and ORCs 2–3 (Project code C3350)with the Australia Telescope Compact Array (ATCA)on 9–10 April 2020, at 1.1–3.1 GHz (weighted centralfrequency after the removal of radio frequency inter-ference = 2121 MHz), over a period of 2×12 hours

and

> ORC-4 was found in archival 325 MHz GMRT data

[stretchcat → h2odragon]

Do these spectral ranges represent the limits of the emission, or the limits of the instruments measuring it? Perhaps the emission is broad spectrum, and different instruments are picking up different parts of it?

[h2odragon → stretchcat]

instrument or at least measurement limits i think