We present photometry and spectropolarimetry of the pre-main sequence star HD 106506 .
A photometric rotational period of \sim 1.416 \pm 0.133 days has been derived using observations at Mount Kent Observatory ( MKO ) .
Spectropolarimetric data taken at the 3.9-m Anglo-Australian Telescope ( AAT ) were used to derive spot occupancy and magnetic maps of the star through the technique of Zeeman Doppler imaging ( ZDI ) .
The resulting brightness maps indicate that HD 106506 displays photospheric spots at all latitudes including a predominant polar spot .
Azimuthal and radial magnetic images of this star have been derived , and a significant azimuthal magnetic field is indicated , in line with other active young stars .
A solar-like differential rotation law was incorporated into the imaging process .
Using Stokes \it { I } information the equatorial rotation rate , \Omega _ { eq } , was found to be 4.54 \pm 0.01 { rad { d } ^ { -1 } } , with a photospheric shear \delta \Omega of 0.21 _ { -0.03 } ^ { +0.02 } { rad { d } ^ { -1 } } .
This equates to an equatorial rotation period of \sim 1.39 \pm 0.01 days , with the equatorial region lapping the poles every \sim 30 _ { -3 } ^ { +5 } days .
Using the magnetic features , the equatorial rotation rate , \Omega _ { eq } , was found to be 4.51 \pm 0.01 { rad { d } ^ { -1 } } , with a photospheric shear \delta \Omega of 0.24 \pm 0.03 { rad { d } ^ { -1 } } .
This differential rotation is approximately 4 times that observed on the Sun .