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Search for the event horizon by means of optical observations with high temporal resolution

Published online by Cambridge University Press:  01 August 2006

G. Beskin ,
V. Debur ,
S. Karpov ,
V. Plokhotnichenko  and
A. Biryukov
G. Beskin
Affiliation:
Special Astrophysical Observatory of Russian Academy of Sciences, Nizhniy Arkhyz, Karachaevo-Cherkessia, Russia
V. Debur
Affiliation:
Special Astrophysical Observatory of Russian Academy of Sciences, Nizhniy Arkhyz, Karachaevo-Cherkessia, Russia
S. Karpov
Affiliation:
Special Astrophysical Observatory of Russian Academy of Sciences, Nizhniy Arkhyz, Karachaevo-Cherkessia, Russia
V. Plokhotnichenko
Affiliation:
Special Astrophysical Observatory of Russian Academy of Sciences, Nizhniy Arkhyz, Karachaevo-Cherkessia, Russia
A. Biryukov
Affiliation:
Sternberg Astronomical Institute of Moscow State University, Moscow, Russia
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Abstract

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The critical property of the black hole is the presence of the event horizon. It may be detected only by means of the detailed study of the emission features of its surroundings. The temporal resolution of such observations has to be better than ∼ rg/c, and it lies in the 10−6–10s range depending on the black hole mass. In SAO RAS we have developed the MANIA hardware and software complex based on the panoramic photon counter and use it in observations on 6m telescope for the search and investigation of the optical variability on the time scales of 106–103 s of various astronomical objects. We present the hardware and methods used for these photometrical, spectroscopic and polarimetrical observations, the principles and criteria of the object selection. The list of the latter includes objects with featureless optical spectra (DC white dwarfs, blazars) and long microlensing events.

We present the results of the observations of two objects-candidates – long MACHO event MACHO-1999-BLG-22 and radio-loud x-ray source with featureless optical spectrum J1942+10 – on the 6-m telescope in June-July 2006.

Keywords

Accretion – black hole physics – methods: data analysis – instrumentation: photometers – instrumentation: polarimeters – instrumentation: spectrographs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S238: Black Holes from Stars to Galaxies – Across the Range of Masses , August 2006 , pp. 159 - 163
Copyright
Copyright © International Astronomical Union 2007

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