منابع مشابه
Ionized iron Kα lines in AGN X-ray spectra
The Equivalent Widths (EW) of the He– and H–like iron lines produced in photoionized, circumnuclear matter of AGN are calculated with respect to both the reflected and the total continua. We found that the EWs with respect to the total continuummay be as large as a few tens of eV, making them observable in bright Seyfert 1s by instruments on board Chandra and XMM–Newton. We apply our calculatio...
متن کاملIonized Iron Lines in X-ray Reflection Spectra
We present results from new calculations of the X-ray reflection spectrum from ionized accretion discs. These computations improve on our previous models by including the condition of hydrostatic balance in the vertical direction, following the work of Nayakshin, Kazanas & Kallman. We find that an ionized Fe Kα line is prominent in the reflection spectra for a wide variety of physical condition...
متن کاملIonized Iron Lines in X - ray Reflection Spectra
We present results from new calculations of the X-ray reflection spectrum from ionized accretion discs. These computations improve on our previous models by including the condition of hydrostatic balance in the vertical direction, following the work of Nayakshin, Kazanas & Kallman. We find that an ionized Fe Kα line is prominent in the reflection spectra for a wide variety of physical condition...
متن کاملEmission Lines in X-ray Spectra of Clusters of Galaxies
Emission lines in X–ray spectra of clusters of galaxies reveal the presence of heavy elements in the diffuse hot plasma (the Intra Cluster Medium, or ICM) in virial equilibrium in the dark matter potential well. The relatively simple physical state of the ICM allows us to estimate, with good accuracy, its thermodynamical properties and chemical abundances. These measures put strong constraints ...
متن کاملA Search for Iron Emission Lines in the Chandra X-ray Spectra of Neutron Star Low-mass X-ray Binaries
While iron emission lines are well studied in black hole systems, both in X-ray binaries and Active Galactic Nuclei, there has been less of a focus on these lines in neutron star low-mass X-ray binaries (LMXBs). However, recent observations with Suzaku and XMM-Newton have revealed broad asymmetric iron line profiles in 4 neutron star LMXBs, confirming an inner disk origin for these lines in neu...
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ژورنال
عنوان ژورنال: Nature
سال: 1931
ISSN: 0028-0836,1476-4687
DOI: 10.1038/127305a0