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Interstellar Scintillation Studies of Pulsars and Distribution of Scattering Plasma in the Local Interstellar Medium

Published online by Cambridge University Press:  12 April 2016

N.D. Ramesh Bhat ,
Yashwant Gupta ,
A. Pramesh Rao  and
P.B. Preethi
N.D. Ramesh Bhat
Affiliation:
National Astronomy and Ionosphere Center, Arecibo Observatory, U.S.A.
Yashwant Gupta
Affiliation:
National Centre for Radio Astrophysics, Pune, India
A. Pramesh Rao
Affiliation:
National Centre for Radio Astrophysics, Pune, India
P.B. Preethi
Affiliation:
Hindustan College of Engineering, Madras, India

Abstract

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Pulsar scintillation measurements from the Ooty Radio Telescope (ORT) are used to investigate the distribution of scattering in the Local Interstellar Medium (LISM; region of ≲ 1 kpc of the Sun), specifically the region in and around the Local Bubble. A 3-component model, where the Solar neighborhood is surrounded by a shell of enhanced plasma turbulence, is proposed for the LISM. Further, the Ooty data, along with those from Parkes and other telescopes are used for investigating the distribution of scattering towards the nearby Loop I Superbubble.

Type
Chapter Four Extreme Scattering Events, Distribution of Material and IPS
Information
International Astronomical Union Colloquium , Volume 182: Sources and Scintillations: Refraction and Scattering in Radio Astronomy , 2001 , pp. 171 - 174
Copyright
Copyright © Kluwer 2001

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