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The MASIV legacy: surveying AGN intra-day variability at radio wavelengths
conference contribution
posted on 2023-05-23, 09:55 authored by Koay, JY, Macquart, J-P, Rickett, BJ, Bignall, HE, Jauncey, DL, Pursimo, T, Reynolds, C, James LovellJames Lovell, Kedziora-Chudczer, L, Ojha, RThe Micro-arcsecond Scintillation-Induced Variability (MASIV) Survey and its followup observations have provided large datasets of AGN intra-day variability (IDV) at radio wavelengths. These data have shown that IDV arises mainly from scintillation caused by scattering in the ionized interstellar medium (ISM) of our Galaxy, based on correlation with Galactic latitudes and line-of-sight Galactic electron column densities. The sensitivity of interstellar scintillation (ISS) towards source angular sizes has provided a new tool for studying the most compact components of radio-loud AGNs at microarcsecond (μas) scale resolution - much higher than any ground-based radio interferometer. We present here key results from the MASIV Survey and its follow-up observations, and point to relevant papers where these results have been published.
History
Publication title
Proceedings of the International Astronomical Union: Symposium 304 - Multiwavelength AGN Surveys and StudiesVolume
9Editors
A Mickaelian and D SandersPagination
415-417ISSN
1743-9213Department/School
School of Natural SciencesPublisher
Cambridge University PressPlace of publication
United KingdomEvent title
International Astronomical Union Symposium 304: Multiwavelength AGN Surveys and StudiesEvent Venue
Yerevan, ArmeniaDate of Event (Start Date)
2013-10-07Date of Event (End Date)
2013-10-11Rights statement
Copyright 2014 International Astronomical UnionRepository Status
- Restricted