Pulsar Scintillation Arcs reveal filaments in the Interstellar Plasma

Details Pulsar Scintillation Arcs reveal filaments in the Interstellar Plasma Pulsar Scintillation Arcs reveal filaments in the Interstellar Plasma

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aipc.1357...97r&link_type=abstract

RADIO PULSARS: AN ASTROPHYSICAL KEY TO UNLOCK THE SECRETS OF THE UNIVERSE. AIP Conference Proceedings, Volume 1357, pp. 97-100

Astronomy and Astrophysics

Astrophysics

Pulsars, Turbulence, Supernovae, Brightness, Pulsars, Convection, Turbulence, And Diffusion, Supernovae, Magnitudes And Colors, Luminosities

Scientific paper

Both forward and reverse Scintillation Arcs are seen in observations of several pulsars. We study the arcs, which are seen in the 2-D Fourier transform of the dynamic spectrum, from PSRs B0834+06 and B1737+13. In both cases we conclude that the underlying scattered image is highly extended along an axis and also highly modulated along that axis. The corresponding spatial structure in the ionized interstellar medium must be bundles of spaghetti-like filaments--highly anisotropic turbulence (on scales of 1000-10000 km) which is also very intermittent on scales of an AU. We speculate on their possible origin as remnant turbulence from long past supernovae.

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