A Literature Complete Catalog

The Multi-AGN Catalog represents a foundational archive for multi-AGN science. Note: You are currently viewing the beta version of this website and catalog. Updates are on the way.

Designed to bring uniformity and structure to the field, this catalog (colloquially referred to as 'The Big MAC') encompasses all confirmed and candidate dual AGN (separations ~110 kpc to ~30 pc, and including binary quasars), gravitationally bound binary AGNs with separations ~<30pc, recoiling AGNs, and N-tuple AGN (containing three or more AGNs). Designed for literature completeness, this catalog also includes objects that may well turn out to be lenses or other phenomenon.

The Library At A Glance

Contents of the Current Data Release

You can expect the following information (and more!) in the current data release:

Object Classifications

System and constituent designations

Redshifts and Coordinates

Brightness measurements from at least one band and/or wavelength

All relevant BibCode and DOI links

Selection Methods and Confirmation Methods (when applicable)

Explore Object Classes

Dual AGNs

This library defines dual AGNs as having projected separations of ~0.03<rp<110 kpc .

Binary AGNs

This library defines binary AGNs as having separations of less than ~0.03 kpc (or less than ~30 pc).

Recoiling AGN Candidates

This library includes all AGNs flagged as recoil candidates, which would be the result of a binary SMBH merger event.