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Interstellar scintillation, ISS, and intrinsic variability of radio AGN

Version 2 2024-10-28, 04:11
Version 1 2023-05-21, 12:48
journal contribution
posted on 2024-10-28, 04:11 authored by DL Jauncey, JY Koay, HE Bignall, JP Macquart, T Pursimo, M Giroletti, T Hovatta, S Kiehlmann, BJ Rickett, A Readhead, W Max-Moerbeck, H Vedantham, C Reynolds, James LovellJames Lovell, R Ojha, L Kedziora-Chudczer

We investigate the relationship between the 5 GHz interstellar scintillation (ISS) and the 15 GHz intrinsic variability of the compact, radio-selected active galactic nuclei (AGN) common to the Microarcsecond Scintillation-Induced Variability (MASIV) Survey and the Owens Valley Radio Observatory blazar flux density monitoring program. As part of this investigation, we also re-examine the reported intrinsic nature of the February 1990 VLA observations of the blazar S5 0716+714. We are also examining the presence of IDV/ISS in the Owens Valley 15 GHz flux density monitoring data. We find a significant relationship between the Owens Valley 15 GHz modulation index and the MASIV modulation index. We also discuss the implications of these findings for RadioAstron. (C) 2019 Published by Elsevier Ltd on behalf of COSPAR.

History

Publication title

Advances in Space Research

Volume

65

Issue

2

Pagination

756-762

ISSN

0273-1177

Department/School

Mathematics, Physics

Publisher

Elsevier Ltd

Publication status

  • Published

Place of publication

United Kingdom

Rights statement

Copyright 2019 Published by Elsevier Ltd on behalf of COSPAR.

Socio-economic Objectives

280120 Expanding knowledge in the physical sciences

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