The Ghost in the Machine

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dc.creatorLawrence, A.
dc.date2002-11-11
dc.date.accessioned2026-07-07T02:06:09Z
dc.date.available2026-07-07T02:06:09Z
dc.descriptionI examine simple tests for the presence of accretion disks in AGN - changes of surface brightness with viewing angle, changes of colour temperature with luminosity, and behaviour during variability. AGN observations pass the first two tests but fail the third, unless there is some previously unobserved source of heating - the ``ghost in the machine''.
dc.description4 pages, 1 figure, uses newpasp.sty. Paper from conference proceedings "Active Galactic Nuclei : from Central Engine to Host Galaxy", Paris summer 2002
dc.identifierhttps://arxiv.org/abs/astro-ph/0211213
dc.identifierhttp://arxiv.org/abs/astro-ph/0211213
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5323
dc.subjectAstrophysics
dc.titleThe Ghost in the Machine
dc.typetext

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