Quasar scintillation as a probe of the ionized intergalactic medium
by
Andrea Pallottini(Scuola Normale Superiore, Pisa)
→
Europe/Berlin
Building 67, SemRm 10 (DESY Hamburg)
Building 67, SemRm 10
DESY Hamburg
Description
Scintillation is an optical effect that light can experience when passing through a turbulent ionized medium. In particular, scintillation of light emitted from high redshift quasar, arising from the passage through the turbulent intergalactic medium (IGM), can be used as an independent tool to probe the physical properties of the ionized IGM. In this talk I will present a physically motivated model, based on adaptive mesh refinement cosmological simulations, to calculate scintillation in the IGM. Then I will discuss the main outcomes of our study, focusing on the comparison between our results and the new high-quality observations from the MASIV survey in the radio band.