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This is a Observational study (also classified as: Literature Review).

Radio-loudness Statistics of Quasars from Quaia-VLASS

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Analysis reveals quasar radio-loud fraction under 10%, indicating distinctions in quasar types and potential biases.

The quasar radio-loud fraction is estimated to be less than 10%, aligning with previous studies.
A cross-matched catalog was created containing 43,650 sources, combining data from Gaia and VLASS.
Different thresholds for matching improved the completeness and purity of the quasar catalog.
This analysis paves the way for further exploration of radio-loud and radio-quiet quasars.

Arsenov et al. (2025) studied this question.

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