2002/12/03 by W. N. Brandt, Brandt, W. N., C. Vignali +18
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics (astro-ph) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0212082
10 pages; in New X-ray Results from Clusters of Galaxies and Black Holes (Oct 2002; Houston, TX), eds. C. Done, E.M. Puchnarewicz, M.J. Ward, Advances in Space Research; list of z > 4 X-ray detections available from http://www.astro.psu.edu/users/niel/papers/papers.html
openalex publication_date 2002/12/03 · arxiv created 2003/02/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
X-ray studies of high-redshift (z > 4) active galaxies have advanced substantially over the past few years, largely due to results from the new generation of X-ray observatories. As of this writing X-ray emission has been detected from nearly 60 high-redshift active galaxies. This paper reviews the observational results and their implications for models of the first massive black holes, and it discusses future prospects for the field.