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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PublicationImage sharpening observations of active galactic nuclei
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PublicationIntermediate-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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PublicationIntermediate-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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NewsJames Webb telescope studies organic molecules near black holes
Research led by the University of Oxford and with the participation of the Instituto de Astrofísica de Canarias (IAC) has succeeded in studying, for the first...
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NewsLa Palma telescopes participate in the discovery of a young blazar produced by the merger of two galaxies
An international team of scientists has obtained the first unequivocal detection of a very high speed jet of matter emitted by a galaxy in the process of...
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NewsLST-1 telescope on La Palma detects the most distant quasar at very high energies
The first Large-Sized Telescope (LST) prototype of the Cherenkov Telescope Array Observatory (CTAO), located at the Roque de los Muchachos Observatory (Garafía...
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PublicationModeling 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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PublicationMonitoring 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...
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PublicationMonitoring of active galactic nuclei. I - The quasars 1302 - 102 and 1217 + 023
We present the results of a five-month spectroscopic monitoring campaign of two radio loud quasars, PKS 1217 + 023 and PKS 1302 - 102. There is a pronounced...