منابع مشابه
Long-term Scintillation Observations of Five Pulsars at 1540 MHz
From 2001 January to 2002 June, we monitored PSRs B0329+54, B0823+26, B1929+10, B2020+28 and B2021+51 using the Nanshan 25-m radio telescope of Urumqi Observatory to study their diffractive interstellar scintillation (DISS). The average interval between observations was about 9 days and the observation duration ranged between 2 and 6 hours depending on the pulsar. Wide variations in the DISS pa...
متن کاملInterstellar Scintillation Velocities of a Relativistic Binary PSR B1534+12 and Three Other Millisecond Pulsars
We present interstellar scintillation velocity measurements for four millisecond pulsars obtained from long-term monitoring observations with the Arecibo radio telescope at 430 MHz. We also derive explicit expressions that relate the measured scintillation velocity to the effective transverse velocity responsible for the motion of the diffraction pattern for both binary and solitary pulsars. Fo...
متن کاملScintillation Arcs and Binary Pulsars with an Application to PSR J0737−3039
Scintillation observations can provide useful information about binary pulsar orbits. In some cases the information is not available otherwise; in other cases it allows standard orbital analyses to be carried further in testing General Relativity and other aspects of the binary system. We report on the first use of scintillation arcs to determine information about a binary system. We analyzed p...
متن کاملLong-Term Scintillation Studies of Pulsars: II. Refractive Effects and the Spectrum of Plasma Density Fluctuations
Refractive scintillation effects in pulsars are powerful techniques for discriminating between different models proposed for the electron density fluctuation spectrum in the interstellar medium. Data from our long-term scintillation study of eighteen pulsars in the dispersion measure range 3−35 pc cm (Paper I) are used to investigate two important observable effects of refractive scintillation,...
متن کاملDetermination of the orbital parameters of binary pulsars
We present a simple method for determination of the orbital parameters of binary pulsars, using data on the pulsar period at multiple observing epochs. This method uses the circular nature of the velocity space orbit of Keplerian motion and produces preliminary values based on two one dimensional searches. Preliminary orbital parameter values are then refined using a computationally efficient l...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1998
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.1998.01461.x