GRB990704 optical observation by Michel Boer (fwd) 光学対応天体候補としては比較的明るい(mag 19.4)ものが候補に上がっています。 条件のよい位置ですので、CCDをお使いの方は向けてみてください。 We forward an e-mail by Michel Boer which is trying to send a urgent GCN circular about GRB990704 with several mailer errors back. The text should be useful for all observers. Giangiacomo Gandolfi on behalf of BeppoSAX Mission Scientist #----------------------------------#---------------------------------------= ---# Luigi Piro | E-mail: Istituto Astrofisica Spaziale | piro@alpha1.ias.rm.cnr.it C.N.R. | SAX program: saxsci@alpha1.ias.rm.cnr.= it=20 Via Fosso del Cavaliere | phone: -39-06-4993-4007=20 I-00133 Roma | phone BeppoSAX center: -39-06-4079-639= 3 Italy | fax(CNR) : -39-06-20660188 #__________________________________#_______________________________________= ____# ---------- Forwarded message ---------- Date: Mon, 05 Jul 1999 11:46:11 +0200 From: Michel Boer <Michel.Boer@cesr.fr> To: Luigi Piro - BeppoSAX Mission Scientist <piro@ias.rm.cnr.it> Subject: Re: BeppoSAX MAIL n. 99/14: GRB990704: possible X-ray afterglow TEXT OF THE GCN CIRCULAR Alain Maury (OCA), Boris Gaillard (OCA) and Michel Boer (CESR) report on behalf of the OCA/CESR GRB collaboration, the tentative identification of a possible optical counterpart for GRB990704 announced in GCN#360 and GCN#361 on CCD images obtained on the 90cm Schmidt telescope of the Observatoire de la Cote d'Azur. An object which is not detected on the POSS has been detected at RA2000.0 12h19m29.29s -03=B047'25.8" at m19.4 (unfiltered images) on July 4th 21h01 UT. Contact information : boer@cesr.fr or maury@obs-azur.fr Web page with images at : http://vsnetrc.obs-azur.fr/schmidt/observations/GRB990704.html