منابع مشابه
Interstellar Scintillation of PSR J 0437 − 4715
Aims. We studied the turbulence spectrum of the local interstellar plasma in the direction of PSR J0437−4715, on the basis of our observations and those reported earlier by others. Methods. We combine these data to form a structure function for the variations of phase along the line of sight to the pulsar. For observations that did not report them, we infer modulation indices from a theoretical...
متن کاملInterstellar Scintillation of PSR J 0437 − 4715 on Two Scales ?
We sought to determine the scale of scintillation in the interstellar plasma of PSR J0437−4715. We used the Very Long Baseline Array to obtain scintillation amplitude and phase data, from dynamic spectra at 327 MHz. We observe two scales of scintillation of pulsar PSR J0437−4715, differing by more than an order of magnitude in scintillation bandwidth. The widerbandwidth scale of scintillation t...
متن کاملDaily Observations of Interstellar Scintillation in PSR B 0329 + 54
Quasi-continuous observations of PSR B0329+54 over 20 days using the Nanshan 25-m telescope at 1540 MHz have been used to study the effects of refractive scintillation on the pulsar flux density and diffractive scintillation properties. Dynamic spectra were obtained from datasets of 90 min duration and diffractive parameters derived from a two-dimensional auto-correlation analysis. Secondary sp...
متن کاملParallax of PSR J1744–1134 and the Local Interstellar Medium
We present the annual trigonometric parallax of PSR J1744−1134 derived from an analysis of pulse times of arrival. The measured parallax, π = 2.8±0.2 mas corresponds to the most precisely determined distance to any pulsar. The parallax distance of 357 −24 pc is over twice that derived from the dispersion measure using the Taylor & Cordes model for the Galactic electron distribution. The mean el...
متن کاملMultiple Imaging of Psr B1133]16 by the Interstellar Medium
Refraction of pulsar radiation by electron density irregularities in the interstellar medium sometimes produces multiple imaging of pulsars, which can lead to periodic oscillations of intensity in pulsar dynamic spectra records. Such events can be used as tools to resolve the emission regions in pulsar magnetospheres. Here we describe results from the recent observation of a double imaging even...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1996
ISSN: 0252-9211
DOI: 10.1017/s0252921100042123