2000/01/21 by Jean‐Pierre Macquart, J. -P. Macquart, Macquart, J. -P. +8
Engineering · Physics and Astronomy · #Acoustic Wave Resonator Technologies #Astrophysics (astro-ph) #FOS: Physical sciences #Optical and Acousto-Optic Technologies #Terahertz technology and applications #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0001368
4 pages, 1 figure, to appear in Proc. IAUC177 "Pulsar Astronomy - 2000 and Beyond" Eds. M. Kramer, N. Wex & R. Wielebinski (ASP Conf. Series; uses newpasp.sty)
arxiv created 2000/01/21 · openalex publication_date 2000/01/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We have measured the properties of the diffractive scintillation toward the Vela pulsar under the extremely strong scattering conditions encountered at 660 MHz. We obtain a decorrelation bandwidth of νd = 244 ± 4 Hz and diffractive decorrelation timescale of t\rm diff = 3.3± 0.3 s. Our measurement of the modulation indices m=0.87± 0.003± 0.05 and m=0.93± 0.03 ± 0.05 (one for each polarization stream), are at variance with the modulation index of the Vela pulsar obtained at 2.3 GHz by Gwinn et al. (1997) \it if the deviation from a modulation index of unity is ascribed to a source size effect.