Two to Tango? Binary Quasars, their Environments, and the Merger Hypothesis

Details Two to Tango? Binary Quasars, their Environments, and the Merger Hypothesis Two to Tango? Binary Quasars, their Environments, and the Merger Hypothesis

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2629g&link_type=abstract

Chandra proposal ID #10700307

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Merger/feedback scenarios linking AGN and galaxy evolution to cosmological structure formation seem wildly successful. Close quasar pairs, which are rare but show a significant excess over the extrapolated large-scale quasar correlation function, are the strongest candidates for merger triggering we have. But a competing theory posits that their excess is only due to their inhabiting locally overdense environments. To address this controversy, we propose to observe 9 close quasar pairs. Their X-ray luminosity, spectra, and broadband SEDs will be compared to hundreds of isolated SDSS quasars already imaged and analyzed. Proposed NOAO 4-meter imaging provides complementary tests for environmental overdensities.

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