Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-02-25
Mon.Not.Roy.Astron.Soc. 362 (2005) 1279-1285
Astronomy and Astrophysics
Astrophysics
7 Pages, 2 Figures, revised version, accepted by MNRAS
Scientific paper
10.1111/j.1365-2966.2005.09396.x
Pulsar dynamic spectra exhibit high visibility fringes arising from interference between scattered radio waves. These fringes may be random or highly ordered patterns, depending on the nature of the scattering or refraction. Here we consider the possibility of decomposing pulsar dynamic spectra -- which are intensity measurements -- into their constituent scattered waves, i.e. electric field components. We describe an iterative method of achieving this decomposition and show how the algorithm performs on data from the pulsar B0834+06. The match between model and observations is good, although not formally acceptable as a representation of the data. Scattered wave components derived in this way are immediately useful for qualitative insights into the scattering geometry. With some further development this approach can be put to a variety of uses, including: imaging the scattering and refracting structures in the interstellar medium; interstellar interferometric imaging of pulsars at very high angular resolution; and mitigating pulse arrival time fluctuations due to interstellar scattering.
Stinebring Dan
Walker Mark
No associations
LandOfFree
Electric field representation of pulsar intensity spectra 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 Electric field representation of pulsar intensity spectra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric field representation of pulsar intensity spectra will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-303374