Chandra observations of the cloverleaf quasar H1413+117: A unique laboratory for microlensing studies of a lobal quasar

G. Chartas, M. Eracleous, E. Agol, S. C. Gallagher

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46 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)78-84
Number of pages7
JournalAstrophysical Journal
Volume606
Issue number1 I
DOIs
StatePublished - May 1 2004

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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