Interstellar scintillation, ISS, and intrinsic variability of radio AGN
Author
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Jauncey, David L.
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Koay, Jun Yi
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Bignall, Hayley
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Macquart, Jean-Pierre
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Pursimo, Tapio
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Giroletti, Marcello
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Hovatta, Talvikki
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Kiehlmann, Sebastian
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Rickett, Barney
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Readhead, Anthony C. S.
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Max-Moerbeck, Walter
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Vedantham, Harish
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Reynolds, Cormac
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Lovell, James
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Ojha, Roopesh
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Kedziora Chudczer, Lucyna
Admission date
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2020-05-07T22:36:59Z
Available date
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2020-05-07T22:36:59Z
Publication date
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2020
Cita de ítem
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Advances in Space Research 65 (2020) 756–762
es_ES
Identifier
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10.1016/j.asr.2019.05.003
Identifier
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https://repositorio.uchile.cl/handle/2250/174530
Abstract
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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.