TITLE:   GCN CIRCULAR
NUMBER:  3112
SUBJECT: RXTE Observations of GRB050318
DATE:    05/03/18 23:07:23 GMT
FROM:    Craig Markwardt at NASA/GSFC/UMD  <craigm@milkyway.gsfc.nasa.gov>

C. B. Markwardt (GSFC/UMD), P. Boyd (GSFC/UMBC), N. Gehrels (GSFC)
K. Hurley (UCB), F. E. Marshall (GSFC), M. Still (GSFC/USRA)

RXTE observed GRB 050318 starting at 17:47 UTC (123 minutes after the
BAT trigger), at the BAT reported position (Krimm et al, GCN Circ
#3111).  The exposure was 768 seconds.  The RXTE PCA is a non-imaging
instrument with a field of view of approximately 1 degree (FWHM).

A PCA flux of 7E-12 erg/s/cm^2 was detected (2-10 keV), which is about
four times the expected fluctuations due to the cosmic X-ray
background.  The flux is primarily below 6 keV.  No obvious temporal
variations are detected.