Return to Home Page
Date: Mon, 19 Apr 93 19:20:53 EDT
From: Kurt w. Weiler <kweiler@shimmer.nrl.navy.mil>
Subject: New radio results
SUPERNOVA 1993J IN NGC 3031
M. P. Rupen and R. A. Sramek, National Radio Astronomy
Observatory; S. D. Van Dyk and K. W. Weiler, Naval Research
Laboratory; and N. Panagia, Space Telescope Science Institute, report
new observations of SN 1993J made on 13 April 1993 at 6 cm
wavelength (4.86 GHz) with the Very Large Array in 'B'
configuration. Two separate observing sessions on that day yield flux
density values of 0.33 +/- 0.08 and 0.28 +/- 0.05 mJy. These
measurements confirm the possible detection of radio emission at 6 cm
on that same day recently reported by Strom (IAUC 5762). Such a
value is also consistent with the model results reported by Panagia,
Van Dyk, and Weiler in IAUC 5762. From the model, SN 1993J is
expected to strengthen rapidly in this radio band and reach a peak of
about 30 mJy by 20 May 1993. Radio monitoring with the VLA is
continuing on a nearly daily basis at this and other wavelengths in
order to follow the supernova's rapidly changing behavior.
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
