1999/12/25 by N. D. R. Bhat, N. D. Ramesh Bhat, Bhat, N. D. Ramesh +4
Physics and Astronomy · #Advanced Frequency and Time Standards #Astrophysics (astro-ph) #FOS: Physical sciences #Radio Astronomy Observations and Technology #Solar and Space Plasma Dynamics #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9912517
2 Pages, 1 Figure, To Appear in the Proceedings of the IAU Colloquium 177: "Pulsar Astronomy - 2000 and Beyond", ASP Conference Series, Eds. M. Kramer, N. Wex, and R. Wielebinski
arxiv created 1999/12/25 · openalex publication_date 1999/12/25 · arxiv updated 2009/12/01 · openalex created_date 2022/10/02 · openalex updated_date 2026/07/28
Refractive Interstellar Scintillation (RISS) effects on pulsar signals are\npowerful techniques for discriminating between different models that have been\nproposed for the power spectrum of plasma density fluctuations in the\nInterstellar Medium. The nature of the spectrum is considered to be a major\ninput for understanding the underlying mechanism of interstellar plasma\nturbulence. Data from our long-term pulsar scintillation observations using the\nOoty Radio Telescope (ORT) at 327 MHz are used to investigate the nature of the\nspectrum in the Local Interstellar Medium. The emerging picture is that the\nspectrum is Kolmogorov-like ( \β \≈ 11/3 ) in the spatial scale range\n\∼ 106 m to \∼ 1011 m, and there is evidence for excess power at\nlarger spatial scales ( \∼ 1012 - 1013 m).\n