Time and polarization radiation characteristics PSR J0242+6256 at decameter range

1Ulyanov, OM, 1Shevtsova, AI, 1Zakharenko, VV, 1Skoryk, AO, 1Vasylieva, IY, 1Plakhov, MS
1Institute of Radio Astronomy of the National Academy of Sciences of Ukraine, Kharkiv, Ukraine
Kinemat. fiz. nebesnyh tel (Online) 2018, 34(4):14-29
Start Page: Physics of Stars and Interstellar Medium
Language: Russian

The characteristics of anomalously intense pulses of the pulsar J0242 + 6256 in the decameter wavelength range are studied in the paper. Observations were made using the UTR-2 radio telescope in October 2014. The dispersion measure for the pulsar was precised. For the first time such characteristics as the scattering time constant, the scattering measure and the rotation measure towards the pulsar were determined. Also, the rapid changes in the rotation measure along the profiles of individual anomalously intense pulses were considered. The obtained characteristics show that, despite the small dispersion measure and the close arrangement to the Earth, the scattering measure towards the pulsar is large. Rapid changes in the rotation measure along the pulse profiles of this pulsar possibly are due to the presence of a plasma with rapidly changing parameters near the pulsar.

Keywords: dispersion measure, polarization, pulsar, rotation measure, scattering measure

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