BeppoSAX MAIL n. 01/11: ALERT: Possible X-ray rich GRB011030 On Oct. 30, 06:28:02 U.T. a faint transient has been detected by the WFC1 aboard BeppoSAX, without counterpart in the GRBM. Preliminary coordinates from WFC are: R.A.(2000)= 310.927 DEC.(2000)= 77.293 The error radius at this stage of analysis is 5'. A preliminary analysis of quick-look data shows that the event could be an X-ray rich GRB, but the low galactic latitude and the presence of a faint Rosat source (1RXS J204310.8+77172) inside the error box can not exclude the x-ray burster nature of the source. We are not planning a follow-up observation of this burst, due to the on-going testing phase of gyroless attitude control system. Giangiacomo Gandolfi on behalf of BeppoSAX Mission Scientist #----------------------------------#------------------------------------------# Luigi Piro | E-mail: Istituto Astrofisica Spaziale | piro@ias.rm.cnr.it C.N.R. | SAX program: saxsci@ias.rm.cnr.it Via Fosso del Cavaliere | phone: -39-06-4993-4007 I-00133 Roma | phone BeppoSAX center: -39-06-4079-6393 Italy | fax(CNR) : -39-06-20660188 #__________________________________#___________________________________________#