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26 April 2024 |
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An XMM-Newton detection of the z=5.80 X-ray weak quasar SDSSp J104433.04-012502.2 | | W.N. Brandt
; M. Guainazzi
; S. Kaspi
; X. Fan
; D.P. Schneider
; Michael A. Strauss
; J. Clavel
; J.E. Gunn
; | | Date: |
17 Oct 2000 | | Subject: | astro-ph | | Affiliation: | Penn State), M. Guainazzi (XMM-Newton SOC, VILSPA, ESA), S. Kaspi (Penn State), X. Fan (Princeton), D.P. Schneider (Penn State), Michael A. Strauss (Princeton), J. Clavel (XMM-Newton SOC, VILSPA, ESA), and J.E. Gunn (Princeton | | Abstract: | We report on an XMM-Newton observation of the most distant known quasar, SDSSp J104433.04-012502.2, at z=5.80. We have detected this quasar with high significance in the rest-frame 3.4-13.6 keV band, making it the most distant cosmic object detected in X-rays; 32 +/- 9 counts were collected. SDSSp J104433.04-012502.2 is notably X-ray weak relative to other luminous, optically selected quasars, with alpha_ox=-1.91 +/- 0.05 and a 3.4-13.6 keV luminosity of about 1.8 x 10^{44} erg/s. The most likely reason for its X-ray weakness is heavy absorption with N_H greater than about 10^{24} 1/cm^2, as is seen in some Broad Absorption Line quasars and related objects; we discuss this and other possibilities. High-quality spectroscopy from 0.95-1.10 microns to search for blueshifted C IV absorption may elucidate the origin of the X-ray weakness. | | Source: | arXiv, astro-ph/0010328 | | Services: | Forum | Review | PDF | Favorites | |
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