2004/01/13 by G. Chartas, M. Eracleous, E. Agol +1
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Context (archaeology) #Emission spectrum #Flux (metallurgy) #Galaxies: Formation, Evolution, Phenomena #Gravitational microlensing #Line (geometry) #Quasar #Redshift #Spectral line #astro-ph
paper · pdf · doi:10.1086/382743
published as Astrophys.J. 606 (2004) 78-84 · 12 pages, includes 4 figures, Accepted for publication in ApJ
arxiv created 2004/01/13 · openalex publication_date 2004/04/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present new results uncovered by a reanalysis of a Chandra observation of the gravitationally lensed, low-ionization broad absorption line (LoBAL) quasar H1413+117. Previous analyses of the same Chandra observation led to the detection of a strong, redshifted Fe Kα line from the combined spectrum of all images. We show that the redshifted Fe Kα line is only significant in the brighter image A. The X-ray flux fraction of image A is larger by a factor of 1.55 ± 0.17 than the optical R -band flux fraction, indicating that image A is significantly enhanced in the X-ray band. We also find that the Fe Kα line and the continuum are enhanced by different factors. A microlensing event could explain both the energy-dependent magnification and the significant detection of Fe Kα line emission in the spectrum of image A only. In the context of this interpretation, we provide constraints on the spatial extent of the inferred scattered continuum and reprocessed Fe Kα line emission regions in a LoBAL quasar.