简洁
发表于 2025-3-23 12:11:46
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FAZE
发表于 2025-3-23 17:30:13
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
发表于 2025-3-23 18:39:43
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
发表于 2025-3-24 01:25:17
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
发表于 2025-3-24 02:55:26
Why Are Only High-Redshift Obscured AGN Bright Submillimeter Sources?,]. We have used sensitive submillimetre (submm) observations (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
发表于 2025-3-24 06:56:38
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顾客
发表于 2025-3-24 13:20:46
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
受伤
发表于 2025-3-24 14:49:28
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itinerary
发表于 2025-3-24 19:26:20
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
爱了吗
发表于 2025-3-24 23:24:32
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