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2009•Chinese Physics LettersOpen access

Two-Component Model for the Interstellar Scattering along the Line of Sight to the Pulsar PSR B0136+57

Zhou Ai-Zhi, Tan Jin-Yu, Ali Esamdin, Xin-Ji Wu

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Abstract

A rigorous treatment of the refractive scintillation caused by a two-component interstellar scattering medium and a Kolmogorov form of density spectrum is discussed. It is assumed that the interstellar scattering medium is composed of a thin screen ISM and an extended interstellar medium. We conclude that the refractive scintillation caused by this two-component ISM scattering gives a more satisfactory explanation for the observed flux density variation than the single extended medium model along the line of sight to the pulsar PSR B0136+57.

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A rigorous treatment of the refractive scintillation caused by a two-component interstellar scattering medium and a Kolmogorov form of density spectrum is discussed. It is assumed that the interstellar scattering medium is composed of a thin screen ISM and an extended interstellar medium. We conclude that the refractive scintillation caused by this two-component ISM scattering gives a more satisfactory explanation for the observed flux density variation than the single extended medium model along the line of sight to the pulsar PSR B0136+57.

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Available abstract

A rigorous treatment of the refractive scintillation caused by a two-component interstellar scattering medium and a Kolmogorov form of density spectrum is discussed. It is assumed that the interstellar scattering medium is composed of a thin screen ISM and an extended interstellar medium. We conclude that the refractive scintillation caused by this two-component ISM scattering gives a more satisfactory explanation for the observed flux density variation than the single extended medium model along the line of sight to the pulsar PSR B0136+57.

Key concepts: Physics, Interstellar medium, Pulsar, Line-of-sight, Scintillation, Scattering, Astrophysics, Line (geometry)

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