SIMBAD references

We have discovered a long radio trail at 843MHz which is apparently associated with middle-age pulsar PSR J1509-5850. The radio trail has a length of ∼7arcmin. In X-rays, Chandra observation of PSR J1509-5850 reveals an associated X-ray trail which extends in the same orientation as the radio trail. Moreover, two clumpy structures are observed along the radio trail. The larger one is proposed to be the supernova remnant (SNR) candidate MSC 319.9-0.7. Faint X-ray enhancement at the position of the SNR candidate is found in the Chandra data.