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    Gravitational Lens Zooms in on why some Quasars have the Radio turned down

    July 3, 2016, Categories  Astronomy/Space

    Reconstruction of the lensed radio-quiet quasar HS0810+2554 after removing the effects of the lensing. Right: the data from the Karl G. Jansky Very Large Array showing what the source looks like after passage through the lensing galaxy. The images are not to scale - the lensed image appears to be many times larger in the sky than the actual size of the source. Credit: N Jackson/NRAO

    Reconstruction of the lensed radio-quiet quasar HS0810+2554 after removing the effects of the lensing. Right: the data from the Karl G. Jansky Very Large Array showing what the source looks like after passage through the lensing galaxy. The images are not to scale – the lensed image appears to be many times larger in the sky than the actual size of the source. Credit: N Jackson/NRAO

    Mini-jets of material ejected from a central supermassive black hole appear to be the culprits behind faint radio wave emissions in ‘radio-quiet’ quasars. A study of gravitationally-lensed images of 4 radio-quiet quasars has revealed the structure of these distant galaxies in unprecedented detail...

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