Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.7810s&link_type=abstract
American Astronomical Society, 185th AAS Meeting, #78.10; Bulletin of the American Astronomical Society, Vol. 26, p.1443
Astronomy and Astrophysics
Astronomy
2
Scientific paper
The measurements of the pulse broadening T_sc due to interstellar scattering on 23 pulsars at 30, 40, 60 and 103 MHz by using radiotelescopes in Pushchino (Russia) are presented. For a number of available pulsars the frequency dependence T_sc(f) = kf(alpha ) , where power alpha =4.3 - 4.8 for different sources, was obtained. Dispersion measure (DM) dependence of scattering is steeper significantly, than the expected slope for simple models of medium. For all observed pulsars in DM interval 20 - 250 pc cm(-3) averaged value T_sc(DM) = 0.06 DM({3.0) +/- 0.2} (mu s), evaluated to 103 MHz. For not very distant pulsars with DM la 100 (16 pulsars) DM dependence even more steeper: T_sc(DM) = 0.002 DM({3.8) +/- 0.3} (mu s). These results are consistent with the relations, obtained by Cordes et al. (ApJ.,1985,v288,221) and Alurkar et al. (Aust.J.Phys.,1986,v39,433) at more higher frequencies and show also that spectrum of interstellar plasma turbulence cannot be represented by a simple power law.
No associations
LandOfFree
Interstellar scattering of pulsar pulses at low frequencies 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 Interstellar scattering of pulsar pulses at low frequencies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interstellar scattering of pulsar pulses at low frequencies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1321815