Speaker
Description
Pulsars scintillate because their radio emission is split into multiple interfering paths by the interstellar medium (ISM). For a long time, the dominant model for the responsible medium has been that of a dense and turbulent ionized medium. However, with the advent of modern techniques of scintillometry, phenomena emerged that are difficult to explain in this model. Using data obtained over several years with the Effelsberg 100m telescope, including data from the recently installed wideband receiver (UBB), I will show that the ISM splits a pulsar into many distinct images that are positioned along a straight line and that are stable over long times and wide bands. This requires the ionized ISM to have a filamentary structure on small scales whose physical nature remains a mystery.
| What is your career stage? | Non-tenured scientist (post PhD) |
|---|---|
| Which telescopes do you use / are you affiliated with? | Effelsberg, LOFAR |
