Interstellar Scintillation observations for PSR B0355+54

Abstract

In this paper, we report our investigation of pulsar scintillation phenomena by monitoring PSR B0355$+$54 at 2.25 GHz for three successive months using \emph{Kunming 40-m radio telescope}. We have measured the dynamic spectrum, the two-dimensional correlation function, and the secondary spectrum. In those observations with high signal-to-noise ratio ($S/N\ge 100$), we have detected the scintillation arcs, which are rarely observable using such a small telescope. The sub-microsecond scale width of the scintillation arc indicates that the transverse scale of structures on scattering screen is as compact as AU size. Our monitoring has also shown that both the scintillation bandwidth, timescale, and arc curvature of PSR B0355$+$54 were varying temporally. The plausible explanation would need to invoke multiple-scattering-screen or multiple-scattering-structure scenario that different screens or ray paths dominate the scintillation process at different epochs.

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• The $\theta$-$\theta$ Diagram: Transforming pulsar scintillation spectra to coordinates on highly anisotropic interstellar scattering screens
• Discovery of delayed spin-up behavior following two large glitches in the Crab pulsar, and the statistics of such processes
• Jiamusi Pulsar Observations: II. Scintillations of 10 Pulsars
• Interstellar scintillation and polarization of PSR B0656+14 in the Monogem Ring
• Scattering model of scintillation arcs in pulsar secondary spectra
• Morphology of solar system scale plasma lenses in the interstellar medium: a test from pulsar scintillation parabolic arcs