Multifrequency studies of Optically Quiet Quasars

We have made multiband observations of six candidate Optically Quiet Quasars, and confirm the inverted Spectral Energy Distribution in four. OQQs could be ordinary radio‐loud AGN whose SED is significantly modified by absorption either intrinsic to the source or along the line of sight, or the X‐rays could be dominated by a strong inverse‐Compton contribution. Our four OQQs exhibit a range of properties and more than one explanation is possible.