We measure the SZ signal toward a set of 47 clusters with a median mass of 9.5 \times 10 ^ { 14 } M _ { \sun } and a median redshift of 0.40 using data from Planck and the ground-based Bolocam receiver .
When Planck XMM -like masses are used to set the scale radius \theta _ { \textrm { s } } , we find consistency between the integrated SZ signal , Y _ { \textrm { 5 R 500 } } , derived from Bolocam and Planck based on gNFW model fits using A10 shape parameters , with an average ratio of 1.069 \pm 0.030 ( allowing for the \simeq 5 % Bolocam flux calibration uncertainty ) .
We also perform a joint fit to the Bolocam and Planck data using a modified A10 model with the outer logarithmic slope \beta allowed to vary , finding \beta = 6.13 \pm 0.16 \pm 0.76 ( measurement error followed by intrinsic scatter ) .
In addition , we find that the value of \beta scales with mass and redshift according to \beta \propto M ^ { 0.077 \pm 0.026 } \times ( 1 + z ) ^ { -0.06 \pm 0.09 } .
This mass scaling is in good agreement with recent simulations .
We do not observe the strong trend of \beta with redshift seen in simulations , though we conclude that this is most likely due to our sample selection .
Finally , we use Bolocam measurements of Y _ { 500 } to test the accuracy of the Planck completeness estimate .
We find consistency , with the actual number of Planck detections falling approximately 1 \sigma below the expectation from Bolocam .
We translate this small difference into a constraint on the the effective mass bias for the Planck cluster cosmology results , with ( 1 - b ) = 0.93 \pm 0.06 .