Rotation of the solar core from BiSON and LOWL frequency observations

Determination of the rotation of the solar core requires very accurate data on splittings for the low-degree modes which penetrate to the core, as wel l as for modes of higher degree to suppress the contributions from the rest of the Sun to the splittings of the low-degree modes, Here we combine low- degree data based on 32 months of observations with the BiSON network and d ata from the LOWL instrument. The data are analysed with a technique that s pecifically aims at obtaining an inference of rotation that is localized to the core. Our analysis provides what we believe is the most stringent cons traint to date on the rotation of the deep solar interior.