Double-Peaked Broad Emission Lines and the Geometry of Accretion in AGNs

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dc.creatorStrateva, Iskra
dc.creatorStrauss, Michael A.
dc.creatorHao, Lei
dc.date2003-03-13
dc.date.accessioned2026-07-07T02:07:54Z
dc.date.available2026-07-07T02:07:54Z
dc.descriptionAlthough accretion disks are a theoretically appealing model for the geometry and dynamics of the gas in the vicinity of black holes in Active Galactic Nuclei (AGN), there is little direct observational evidence for their existence. The telltale signature of disk emission in AGN -- double peaked emission lines -- have so far been found in only two dozen cases in the optical. We have selected about 100 double-peaked broad emission line AGN from the Sloan Digital Sky Survey (SDSS) from a large sample of over 4000 AGN with z<0.4. By comparing the properties of these AGN with those of the full sample, we hope to isolate the defining characteristics of disk-emitters and ultimately answer the question: "If all AGN have accretion disks, why don't they all show double-peaked disk emission lines?" Here we present Gaussian parameterized Halpha line-profile measurements for the sample of double-peaked AGN in comparison with circular and elliptical accretion disk models.
dc.descriptionuses ociwsymp1e.sty; to appear in "Carnegie Observatories Astrophysics Series, Vol. 1: Coevolution of Black Holes and Galaxies," ed. L. C. Ho (Pasadena: Carnegie Observatories, http://www.ociw.edu/ociw/symposia/series/symposium1/proceedings.html)
dc.identifierhttps://arxiv.org/abs/astro-ph/0303279
dc.identifierhttp://arxiv.org/abs/astro-ph/0303279
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5850
dc.subjectAstrophysics
dc.titleDouble-Peaked Broad Emission Lines and the Geometry of Accretion in AGNs
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