SIMBAD references

2018MNRAS.476.5579X - Mon. Not. R. Astron. Soc., 476, 5579-5590 (2018/June-1)

Interstellar scintillation observations for PSR B0355+54.

XU Y.H., LEE K.J., HAO L.F., WANG H.G., LIU Z.Y., YUE Y.L., YUAN J.P., LI Z.X., WANG M., DONG J., TAN J.J., CHEN W. and BAI J.M.

Abstract (from CDS):

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 the Kunming 40-m radio telescope. We measured the dynamic spectrum, the two-dimensional correlation function and the secondary spectrum. These observations have a high signal-to-noise ratio (S/N >= 100). We detected 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 the structures on the scattering screen is as compact as astronomical unit size. Our monitoring shows that the scintillation bandwidth, the time-scale and the arc curvature of PSR B0355+54 were varying temporally. A plausible explanation would need to invoke a multiple-scattering-screen or multiple-scattering-structure scenario, in which different screens or ray paths dominate the scintillation process at different epochs.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): pulsars: individual: (PSR B0355+54) - ISM: structure - radio continuum: general

Simbad objects: 3

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2019.11.14-23:54:06

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