Regions of high excitation gas were detected around various active galactic nuclei. Their shape resembles a cone whose axis is oriented close to the radio axis...
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PublicaciónExtended line emission in AGN: looking at the central engine.
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PublicaciónExtended X-Ray Emission around FR II Radio Galaxies: Hot Spots, Lobes, and Galaxy Clusters
We present a systematic analysis of the extended X-ray emission discovered around 35 FR II radio galaxies from the revised Third Cambridge Catalog (3CR) Chandra...
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PublicaciónHigh-resolution imaging of active galactic nuclei
A sample of active galaxies and quasars was observed with a photon-counting detector (IPCS) working in time-resolved imaging mode. The observing and data...
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PublicaciónImage sharpening observations of active galactic nuclei
It is shown that recentering, selecting, and adding up sharp short-exposure images obtained with a photon-counting detector working in time-resolved mode can...
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PublicaciónIntermediate-resolution spectropolarimetry of 3C 273
Spectropolarimetric observations of the quasar 3C 273 over the range 3200-8000 A show wavelength-dependent polarization in the continuum, while the lines had no...
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PublicaciónIntermediate-resolution spectropolarimetry of a small sample of quasars
We present spectropolarimetric observations of a sample of three quasars selected because of their very different broad-band polarization properties. All of the...
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NoticiaLos agujeros negros supermasivos modifican la región central de las galaxias
La investigadora del Instituto de Astrofísica de Canarias Cristina Ramos Almeida lidera un trabajo que ha utilizado datos del telescopio ALMA, en Chile, para...
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PublicaciónModeling an accretion disk in NGC 985
An optically thick relativistic Keplerian accretion disk model is used to fit the broad component of the H-alpha, H-beta, and He I 5876 A emission line profiles...
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PublicaciónMonitoring of active galacitc nuclei. 4: The Seyfert 1 galaxy NGC 4593
Results of a five-month campaign of optical monitoring the Seyfert 1 galaxy NGC 4593 are presented. High resolution H-alpha and H-Beta spectra and direct images...