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Chandra and XMM-Newton Observations of the First Quasars: X-Rays from the Age of Cosmic Enlightenment
Brandt, W. N.; Strauss, Michael A.; Vignali, C. +6 more
We report on Chandra and XMM-Newton observations of a sample of 13 quasars at z~4.7-5.4 mostly taken from the Sloan Digital Sky Survey (SDSS). The present sample complements previous X-ray studies of z>=4 quasars, in which the majority of the objects are optically more luminous and at lower redshifts. All but two of our quasars have been detect…
XMM-Newton Observations of Two Broad Absorption Line QSOs: Q1246-057 and SBS 1542+541
Elvis, M.; Grupe, D.; Mathur, S.
We report on the results of XMM-Newton observations of two broad absorption line quasars (BAL QSOs), Q1246-057 and SBS 1542+541. The unprecedented sensitivity of XMM-Newton allows spectral analysis of these X-ray-weak sources. The X-ray spectral data of these sources can be fitted by a power law with αX=1.0-1.2 and either a partially co…
Probing the Complex and Variable X-Ray Absorption of Markarian 6 with XMM-Newton
Brandt, W. N.; Bauer, Franz E.; Vignali, Cristian +4 more
We report on an X-ray observation of the Seyfert 1.5 galaxy Mrk 6 obtained with the EPIC instruments on board XMM-Newton. Archival BeppoSAX Phoswich Detection System data from 18-120 keV were also used to constrain the underlying hard power-law continuum. The results from our spectral analyses generally favor a double partial-covering model, altho…
The X-Ray Properties of the Nearby Star-forming Galaxy IC 342: The XMM-Newton View
Bauer, F. E.; Brandt, W. N.; Lehmer, B.
We present results on the X-ray properties of IC 342 using a 10 ks XMM-Newton observation. Thirty-five sources are detected coincident with the disk of IC 342 (more than tripling the number known), of which ~31 are likely to be intrinsic to IC 342. This point-source population exhibits a diverse range of spectral properties and has an X-ray lumino…