Low-frequency pulse profile variation in PSR B2217+47: evidence for echoes from the interstellar medium
Low-frequency pulse profile variation in PSR B2217+47: evidence for echoes from the interstellar medium
We have observed a complex and continuous change in the integrated pulse profile of PSR B2217+47, manifested as additional components trailing the main peak. These transient components are detected over 6 yr at 150 MHz using the LOw Frequency ARray (LOFAR), but they are not seen in contemporaneous Lovell observations …