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Discovery of a double peaked Fe emission line in the Cloverleaf quasar H1413+117
Author(s) -
Chartas G.,
Eracleous M.,
Dai X.,
Agol E.,
Gallagher S. C.
Publication year - 2006
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200610693
Subject(s) - gravitational microlensing , physics , accretion disc , rest frame , astrophysics , quasar , emission spectrum , accretion (finance) , line (geometry) , event (particle physics) , spectral line , interpretation (philosophy) , astronomy , stars , galaxy , geometry , mathematics , redshift , computer science , programming language
Our spatial and spectral analysis of a recent deep Chandra observation of H1413+117 confirms a microlensing event in a previous Chandra observation of this object performed about 5 years earlier. We present constraints on the structure of H1413+117 based on the time‐scale of this microlensing event. The analysis of the combined spectrum of the images indicates the presence of two emission line peaks at rest‐frame energies of 5.35 keV and 6.32 keV and detected at the ≳97% and ≳99% confidence levels, respectively. The double peaked Fe emission is fit well with an accretion disk‐line model, however, the best‐fit accretion disk model parameters are neither well constrained nor unique. Another possible interpretation of the Fe emission is fluorescent Fe emission from the back‐side of the wind. Additional observations are required to constrain better the model parameters. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)