%0 Generic %1 jackson2015observations %A Jackson, Neal %A Tagore, Amitpal S. %A Roberts, Carl %A Sluse, Dominique %A Stacey, Hannah %A Vives-Arias, Hector %A Wucknitz, Olaf %A Volino, Filomena %D 2015 %K lenses observation quasar radio %T Observations of radio-quiet quasars at 10mas resolution by use of gravitational lensing %U http://arxiv.org/abs/1508.05842 %X We present VLA detections of radio emission in four four-image gravitational lens systems with quasar sources: HS0810+2554, RXJ0911+0511, HE0435$-$1223 and SDSSJ0924+0219, and e-MERLIN observations of two of the systems. The first three are detected at a high level of significance, and SDSS J0924+0219 is detected. HS0810+2554 is resolved, allowing us for the first time to achieve 10-mas resolution of the source frame in the structure of a radio quiet quasar. The others are unresolved or marginally resolved. All four objects are among the faintest radio sources yet detected, with intrinsic flux densities in the range 1-5$\mu$Jy; such radio objects, if unlensed, will only be observable routinely with the Square Kilometre Array. The observations of HS0810+2554, which is also detected with e-MERLIN, strongly suggest the presence of a mini-AGN, with a radio core and milliarcsecond scale jet. The flux densities of the lensed images in all but HE0435-1223 are consistent with smooth galaxy lens models without the requirement for smaller-scale substructure in the model, although some interesting anomalies are seen between optical and radio flux densities. These are probably due to microlensing effects in the optical.

@misc{jackson2015observations, abstract = {We present VLA detections of radio emission in four four-image gravitational lens systems with quasar sources: HS0810+2554, RXJ0911+0511, HE0435$-$1223 and SDSSJ0924+0219, and e-MERLIN observations of two of the systems. The first three are detected at a high level of significance, and SDSS J0924+0219 is detected. HS0810+2554 is resolved, allowing us for the first time to achieve 10-mas resolution of the source frame in the structure of a radio quiet quasar. The others are unresolved or marginally resolved. All four objects are among the faintest radio sources yet detected, with intrinsic flux densities in the range 1-5$\mu$Jy; such radio objects, if unlensed, will only be observable routinely with the Square Kilometre Array. The observations of HS0810+2554, which is also detected with e-MERLIN, strongly suggest the presence of a mini-AGN, with a radio core and milliarcsecond scale jet. The flux densities of the lensed images in all but HE0435-1223 are consistent with smooth galaxy lens models without the requirement for smaller-scale substructure in the model, although some interesting anomalies are seen between optical and radio flux densities. These are probably due to microlensing effects in the optical.}, added-at = {2015-08-25T10:06:03.000+0200}, author = {Jackson, Neal and Tagore, Amitpal S. and Roberts, Carl and Sluse, Dominique and Stacey, Hannah and Vives-Arias, Hector and Wucknitz, Olaf and Volino, Filomena}, biburl = {https://www.bibsonomy.org/bibtex/2b3ad81e1e9e94de563f70622e5168420/miki}, description = {[1508.05842] Observations of radio-quiet quasars at 10mas resolution by use of gravitational lensing}, interhash = {c2d6a94ed55322521c287a209bf95cfb}, intrahash = {b3ad81e1e9e94de563f70622e5168420}, keywords = {lenses observation quasar radio}, note = {cite arxiv:1508.05842Comment: Accepted by MNRAS}, timestamp = {2015-08-25T10:06:03.000+0200}, title = {Observations of radio-quiet quasars at 10mas resolution by use of gravitational lensing}, url = {http://arxiv.org/abs/1508.05842}, year = 2015 }