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FAZE

The Spatial Clustering of X-ray Selected AGN in the Chandra Msec Fields,andra Deep Field South (CDFS). The AGN clustering amplitude, measured for sources with median luminosity .~ 10. erg s. and at a median redshift of ~ 0.9, is found to be a factor of ~ 2 higher in the CDFS than in the CDFN, revealing large cosmic variance in these 0.1 deg. fields. The extra correlatio

Indebted

What Powers High-Redshift SCUBA Galaxies?,e 2 Ms . Deep Field-North) and deep optical spectroscopic data. Even though a large fraction of high-redshift SCUBA galaxies host AGN activity (upward of 38%), we argue that in almost all cases the AGNs are not bolometrically important (i.e., contribute <20% of the energetics). Thus, most high-redsh

indigenous

Early Spitzer Detections of Extreme X-ray/Optical Sources (EXOs),ray sources are completely undetected in our deep optical GOODS HST/ACS imaging, to limits that place them at the extreme end of the .x/. parameter space, with values about 100 to 1000 times higher than generally found for Active Galactic Nuclei (AGN). We use their Spitzer detections to investigate

Glucose

Why Are Only High-Redshift Obscured AGN Bright Submillimeter Sources?,]. We have used sensitive submillimetre (submm) observations [8,9,12] (using SCUBA at the JCMT) to show that the submm luminosities of unabsorbed and absorbed broad line QSO in those intervals are radically different (>3.): only 1 out of 20 unabsorbed QSO has been detected, while 8 out of 19 absorbe

四目在模仿

顾客

XMM-Newton Observations of Four High-z Quasars, most luminous and distant sources of electromagnetic radiation known. The X-ray emission gives insight into the accretion mechanisms onto super-massive black holes. Current questions are whether quasars exhibit spectral evolution or not and whether absorption in excess of the galactic . is a genera

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itinerary

https://doi.org/10.1007/978-94-011-5129-0inciple of ., by which supermassive black holes grow until they release sufficient energy to unbind the gas that feeds them from their host galaxy. This principle explains several observed facts, including the correlation between the mass of a central black hole and the depth of the gravitational po

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