Central Bureau for Astronomical Telegrams

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IAUC 8101: GRB 030329; 2003cj, 2003ck, 2003cl, 2003cm, 2003cn; 2003cg

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                                                  Circular No. 8101
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


GRB 030329
     G. R. Ricker, Massachusetts Institute of Technology; and the
HETE Science Team report the discovery with the HETE satellite (+
SXC camera) of an extremely bright gamma-ray burst (GRB) on Mar.
29.484 UT located at R.A. = 10h44m50s, Decl. = +21o30'.9 (equinox
2000.0; position uncertainty < 2').  The GRB fluence in the band
30-400 keV was about 1.2 x 10**-4 erg cm**-2 (i.e., about 4000
Crab-s), integrated over the approximately 50-s burst duration.
This is the brightest GRB ever detected by HETE and ranks among the
brightest 1 percent of all GRBs previously detected (cf. Paciesas
et al. 1999, Ap.J. Suppl. 122, 465).  Searches for both new and
contemporaneous observations of the field of GRB 030329 (ecliptic
latitude +12.5 deg), in all wavelength bands, are encouraged.


SUPERNOVAE 2003cj, 2003ck, 2003cl, 2003cm, 2003cn
     Several discoveries of apparent supernovae have been reported
from unfiltered CCD images -- SNe 2003cj, 2003ck, and 2003cl by
W. M. Wood-Vasey, G. Aldering, and P. Nugent (NEAT; cf. IAUC 8095),
and SNe 2003cm in UGC 10590 and 2003cn in IC 849 by M. Papenkova
and W. Li (LOTOSS/KAIT; cf. IAUC 8097).

SN      2003 UT      R.A.  (2000.0)  Decl.    Mag.      Offset
2003cj  Mar. 26.28  12 15 51.90  + 8 59 15.7  20.2   0".8 W, 2".6 S
2003ck  Mar. 26.39  13 06 21.72  + 3 04 21.0  19.3   3".1 W, 0".6 N
2003cl  Mar. 27.24  12 38 50.11  - 2 49 58.8  19.5   2".2 E, 1".8 N
2003cm  Mar. 27.5   16 50 55.02  +59 43 18.1  19.4   8".9 W, 10".9 N
2003cn  Mar. 29.4   13 07 37.05  - 0 56 49.9  18.1   24".2 W, 16".0 S

Additional reported approximate magnitudes:
SN 2003cj, 2002 Apr. 14.21 UT, [21.2; 2003 Feb. 12.51, [20.2; Mar.
16.36, [19.3; 21.64, [18.7; 22.47, [20.0; 27.20, 20.0.  SN 2003ck,
2002 Apr. 13.2, [20.9; 2003 Feb. 3.61, [20.5; 17.45, [19.2; Mar.
28.26, 19.5.  SN 2003cl, 2002 July 21.17, [20.6; 2003 Feb. 16.39,
[18.6; Mar. 6.54, 20.0.  SN 2003cm, 2002 July 27.3, [20; 2003 Mar.
28.5, 19.4; 29.5, 19.4.  SN 2003cn, Mar. 7.4, [19.5; 30.4, 18.1.


SUPERNOVA 2003cg IN NGC 3169
     An unfiltered CCD image taken on Mar. 19.511 UT by Y. Hirose,
Chigasaki, Kanagawa, Japan, shows nothing at the position of SN
2003cg (limiting mag about 16.0 in poor conditions; communicated
via H. Yamaoka).

                      (C) Copyright 2003 CBAT
2003 March 30                  (8101)            Daniel W. E. Green

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