Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007arep...51..863g&link_type=abstract
Astronomy Reports, Volume 51, Issue 10, pp.863-868
Astronomy and Astrophysics
Astronomy
97.60.Jd, 97.10.Ld, 95.85.Bh, 95.30.Gv
Scientific paper
The results of radio observations of the afterglow produced by a giant gamma-ray flare from the magnetar SGR 1806-20 on December 27, 2004 are reported. The observations were carried out on the 32-m radio telescope of the Zelenchuk Observatory of the Institute of Applied Astronomy, Russian Academy of Sciences, at a wavelength of 3.5 cm. The observations confirm the enhanced radio brightness of the nebula around the magnetar in the period from 25 to 31 days after the flare. A comparison of the Zelenchuk observations with other data have enabled us to estimate the magnetic-field intensity in the radio-afterglow region using a model of synchrotron radiation with self-absorption in a relativistic plasma. The kinetic energy of the blast wave produced by the giant explosion of the magnetar is estimated.
Finkel'Shtein A. M.
Gnedin Yu N.
Ipatov A. V.
Kharinov M. A.
Piotrovich Yu. M.
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