X-rays from the First Massive Black Holes

W. N. Brandt; C. Vignali; B. D. Lehmer; L. A. Lopez; D. P. Schneider; I. V. Strateva

doi:10.1016/j.asr.2004.02.017

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arXiv · astro-ph/0411355

X-rays from the First Massive Black Holes

W. N. Brandt·C. Vignali·B. D. Lehmer·L. A. Lopez·D. P. Schneider·I. V. Strateva

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Abstract

We briefly review some recent results from Chandra and XMM-Newton studies of the highest redshift (z > 4) active galactic nuclei (AGNs). Specific topics covered include radio-quiet quasars, radio-loud quasars, moderate-luminosity AGNs in X-ray surveys, and future prospects. No significant changes in AGN X-ray emission properties have yet been found at high redshift, indicating that the small-scale X-ray emission regions of AGNs are insensitive to the dramatic changes on larger scales that occur from z = 0-6. X-ray observations are also constraining the environments of high-redshift AGNs, relevant emission processes, and high-redshift AGN demography.

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W. N. Brandt, C. Vignali, B. D. Lehmer, L. A. Lopez, D. P. Schneider, I. V. Strateva. 2004-11-12. X-rays from the First Massive Black Holes. https://doi.org/10.1016/j.asr.2004.02.017

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