Revealing compact structures of interstellar plasma in the Galaxy with RadioAstron

  title={Revealing compact structures of interstellar plasma in the Galaxy with RadioAstron},
  author={E. N. Fadeev and A. S. Andrianov and Mariko S. Burgin and Mikhail V. Popov and A. Rudnitskiy and Vladimir I. Shishov and Tatiana V. Smirnova and Vladimir A. Soglasnov and Victor A. Zuga},
  journal={Monthly Notices of the Royal Astronomical Society},
The aim of our work was to study the spatial structure of inhomogeneities of interstellar plasma in the directions of five pulsars: B0823+26, B0834+06, B1237+25, B1929+10, and B2016+28. Observations of these pulsars were made with RadioAstron space-ground radio interferometer at 324 MHz. We measured the angular size of the scattering disks to be in range between 0.63 and 3.2 mas. We determined the position of scattering screens on the line of sight. Independent estimates of the distances to the… 

Anisotropic Scattering of the Radio Emission of the Pulsar B0833–45 in the Vela Supernova Remnant

Very Long Baseline Interferometry (VLBI) observations of the pulsar B0833–45 have been carried out as part of the scientific program of the RadioAstron mission. Ground support was provided by the

Interstellar Scintillation and Polarization of PSR B0656+14 in the Monogem Ring

High-sensitivity interstellar scintillation and polarization observations of PSR B0656+14 made at three epochs over a year using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) show

Substructure of Visibility Functions from Scattered Radio Emission of Pulsars through Space VLBI

We report on the substructure of visibility functions in the delay domain of PSRs B0329+54, B0823+26, B0834+06, B1933+16, and B0833–45 (Vela) observed with Earth–Earth and RadioAstron space–Earth

The θ–θ diagram: transforming pulsar scintillation spectra to coordinates on highly anisotropic interstellar scattering screens

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Disentangling interstellar plasma screens with pulsar VLBI: combining auto- and cross-correlations

Current methods of measuring distances to pulsar scattering screens rely on a single screen dominating the scintillation pattern. We present a novel technique to reconstruct the scattered flux of a

FAST interstellar scintillation observation of PSR B1929+10 and PSR B1842+14

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We have analyzed two-dimensional correlation functions from the dynamic spectra of 11 pulsars using the archival data of the “Radioastron” project. The time-sections of these functions were

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Noodle model for scintillation arcs

  • C. Gwinn
  • Physics
    Monthly Notices of the Royal Astronomical Society
  • 2019
I show that narrow, parallel strips of phase-changing material, or "noodles," generically produce parabolic structures in the delay-rate domain. Such structures are observed as "scintillation arcs"

Technical Achievements and Scientific Results of RadioAstron Mission 2011-2018

  • M. Popov
  • Physics
    2019 URSI Asia-Pacific Radio Science Conference (AP-RASC)
  • 2019
A review of the unique technical parameters of the RadioAstron ground-to-space interferometer measured in flight is presented. The main scientific results obtained in seven years are also discussed.



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