Uncertainty in measurements of the distances of scattering screens in pulsar observations

• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2018,（8）
• 页码范围: 117-120
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/1674-4527/18/8/103

摘要

In our previous paper we investigated properties of the ionized interstellar medium in the direction of three distant pulsars:B 1641-45,B 1749-28 and B 1933+ 16.We found that uniformly distributed scattering material cannot explain measured temporal and angular broadening.We applied a model for a thin scattering screen and found the distances to the scattering screens in all directions.In this paper,we consider more complicated models of scattering material distribution,such as models containing both a uniformly distributed medium and thin screen.Based on these models,we estimate the accuracy of localization of scattering screens and the possible relative contribution of each scattering component.