The search for the superrapid variability and UBVR photometry of A0620-00

Details The search for the superrapid variability and UBVR photometry of A0620-00 The search for the superrapid variability and UBVR photometry of A0620-00

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pazh...15..590s&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 15, July 1989, p. 590-596. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

3

Accretion Disks, Black Holes (Astronomy), Novae, Red Dwarf Stars, Stellar Flares, Astronomical Photometry, Electrophotometry, Stellar Spectra, Ubv Spectra

Scientific paper

Electrophotometric observations of the A0620-00 system, whose compact element is probably a black hole, were carried out on a 6-m telescope within the framework of the MANIA experiment. The following extremely fast events were detected: double ultrashort flares with a duration of 0.5-5 ms and a leading front duration of 0.1-1 ms. Low estimates of the brightness temperature in the flare generation zones amount to 10 to the 9th to 10 to the 11th K. This suggests that nonthermal processes take place in the A0620-00 system in the course of accretion onto a black hole.

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