We report the discovery of two additional planetary companions to WASP-41 and WASP-47 .
WASP-41 c is a planet of minimum mass 3.18 \pm 0.20 M _ { Jup } and eccentricity 0.29 \pm 0.02 , and it orbits in 421 \pm 2 days .
WASP-47 c is a planet of minimum mass 1.24 \pm 0.22 M _ { Jup } and eccentricity 0.13 \pm 0.10 , and it orbits in 572 \pm 7 days .
Unlike most of the planetary systems that include a hot Jupiter , these two systems with a hot Jupiter have a long-period planet located at only \sim 1 au from their host star .
WASP-41 is a rather young star known to be chromospherically active .
To differentiate its magnetic cycle from the radial velocity effect induced by the second planet , we used the emission in the H \alpha line and find this indicator well suited to detecting the stellar activity pattern and the magnetic cycle .
The analysis of the Rossiter–McLaughlin effect induced by WASP-41 b suggests that the planet could be misaligned , though an aligned orbit can not be excluded .
WASP-47 has recently been found to host two additional transiting super Earths .
With such an unprecedented architecture , the WASP-47 system will be very important for understanding planetary migration .