We announce the first discovery of a bent double lobe radio source ( DLRS ) in a known cluster filament .
The bent DLRS is found at a distance of 3.4 Mpc from the center of the rich galaxy cluster , Abell 1763 .
We derive a bend angle \alpha =25 ^ { o } , and infer that the source is most likely seen at a viewing angle of \Phi =10 ^ { o } .
From measuring the flux in the jet between the core and further lobe and assuming a spectral index of 1 , we calculate the minimum pressure in the jet , ( 8.0 \pm 3.2 ) \times 10 ^ { -13 } dyn/cm ^ { 2 } , and derive constraints on the intra-filament medium ( IFM ) assuming the bend of the jet is due to ram pressure .
We constrain the IFM to be between ( 1-20 ) \times 10 ^ { -29 } gm/cm ^ { 3 } .
This is consistent with recent direct probes of the IFM and theoretical models .
These observations justify future searches for bent double lobe radio sources located several Mpc from cluster cores , as they may be good markers of super cluster filaments .