Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.213..591b&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 213, April 1, 1985, p. 591-611. Research supported by t
Astronomy and Astrophysics
Astronomy
97
Electron Density (Concentration), Interstellar Matter, Pulsars, Stellar Radiation, Correlation Coefficients, Power Spectra, Radiant Flux Density, Radio Wave Refraction, Scattering
Scientific paper
Several recent observational and theoretical investigations have suggested that long-wavelength (≤1014cm) density fluctuations in the interstellar medium may have a major influence on observations of pulsars and extragalactic radio sources. These long-wavelength fluctuations are responsible for refractive focusing, and may cause the monthly to annual variations in pulsar flux densities observed at low frequency. Fluctuations in the angular sizes, pulse arrival times and pulse widths of pulsars should also be observable and should be cross-correlated with the flux density variations. The magnitude of these correlations, and their dependence upon the time lag and the observing wavelength, for different power-law spectra of density fluctuations are estimated. Sensitive observations on selected pulsars will be able to confirm the importance of refractive effects in the interstellar medium and also determine the slope of the density fluctuation spectrum.
Blandford Roger
Narayan Ramesh
No associations
LandOfFree
Low-frequency variability of pulsars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Low-frequency variability of pulsars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-frequency variability of pulsars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1289443