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- Title
Refractive shift in the position of the pulsar PSR B0329+54, measured at 111, 610, and 2300 MHz.
- Authors
Rodin, A.; Starovoit, E.
- Abstract
The results of an analysis of timing data for the pulsar PSR B0329+54 obtained in 1968-2012 on the Large Scanning Antenna of the Pushchino Radio Astronomy Observatory at 111 MHz, the 64 m DSS-14 telescope of the Jet Propulsion Laboratory at 2.3 GHz, and the 64 m telescope of the Kalyazin Radio Astronomy Observatory at 610 MHz are presented. The astrometric and spin parameters of the pulsar are derived at a new epoch. The coordinates of the pulsar and its proper motion measured at the three frequencies differ. These differences have a systematic character, and are interpreted as a secular, refractive shift in the apparent position of the pulsar that arises because it is observed through large-scale inhomogeneities of the interstellar medium, leading to variations in the angle of refraction.
- Subjects
PULSARS; INTERSTELLAR medium; RADIO astronomy observatories; SCANNING antennas; REFRACTIVE index
- Publication
Astronomy Reports, 2017, Vol 61, Issue 11, p942
- ISSN
1063-7729
- Publication type
Article
- DOI
10.1134/S106377291711004X