Abstract
Interstellar turbulent plasma can be considered to be a radio astronomy antenna—an interstellar diffraction grating, with an aperture size roughly equal to the scattering-disk radius, R sc = z eff θ sc ≈ 1 AU (where z eff is the effective distance and θ sc the scattering angle). The angular resolution of this interstellar diffraction grating is of the order of ϕ dif = 1/(k R sc ). A single ground-based radio telescope can be used as a receiver for the interstellar diffraction grating. The grating’s parameters can be obtained only from observations on a system of interferometers with an angular resolution comparable to the scattering angle θ sc . The range of baselines necessary to determine the parameters of the grating is close that of the Earth-space RadioAstron interferometer.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
L. T. Little and A. Hewish, Mon. Not. R. Astron. Soc. 134, 221 (1966).
M.H. Cohen, E.J. Gunderman, H.E. Hardebeck, and L.E. Sharp, Astrophys. J. 147, 449 (1967).
A. Wolsczan and J.M. Cordes, Astrophys. J. 320, L35 (1987).
T. V. Smirnova and V. I. Shishov, Pis’ma Astron. Zh. 15, 443 (1989) [Sov. Astron. Lett. 15, 191 (1989)].
T. V. Smirnova, V. I. Shishov, and V. M. Malofeev, Astrophys. J. 462, 289 (1996).
C. Gwinn, M. J. Ojeda, M. C. Britton, et al., Astrophys. J. 483, L53 (1997).
J.M. Cordes, arXiv: astro-ph/0007231 (2000).
A. M. Prokhorov, F. V. Bunkin, K. S. Gochelashvili, and V. I. Shishov, Usp. Fiz. Nauk 114, 415 (1974) [Sov. Phys. Usp. 17, 826 (1974)].
V. I. Shishov and T. V. Smirnova, Astron. Zh. 79, 810 (2002) [Astron. Rep. 46, 731 (2002)].
V. I. Shishov, T. V. Smirnova, W. Sieber, et al., Astron. Astrophys. 404, 557 (2003).
T.V. Smirnova, V.I. Shishov, W. Sieber, et al., Astron. Astrophys. 455, 195 (2006).
T. V. Smirnova, C. R. Gwinn, and V. I. Shishov, Astron. Astrophys. 453, 601 (2006).
T.V. Smirnova and V. I. Shishov, Astron. Zh. 85, 818 (2008) [Astron. Rep. 52, 736 (2008)].
V. E. Ostashev and V. I. Shishov, Izv. Vyssh. Uchebn. Zaved., Radiofiz. 20, 833 (1977).
T. V. Smirnova, V. I. Shishov, and D. R. Stinebring, Astron. Zh. 75, 866 (1998) [Astron. Rep. 42, 766 (1998)].
N. D. R. Bhat, Y. Gupta, and A. P. Rao, Astrophys. J. 500, 262 (1998).
N. S. Kardashev, Experim. Astron. 7, 329 (1997).
Author information
Authors and Affiliations
Additional information
Original Russian Text © V.I. Shishov, 2010, published in Astronomicheskiĭ Zhurnal, 2010, Vol. 87, No. 8, pp. 789–794.
Rights and permissions
About this article
Cite this article
Shishov, V.I. Interstellar scintillations and nanoarcsecond resolution in radio astronomy. Astron. Rep. 54, 724–729 (2010). https://doi.org/10.1134/S1063772910080056
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063772910080056