Transient High-Latitude X-Ray Source
Abstract
A. P. Willmore, Department of Space Research, University of Birmingham, communicates: "The region of the sky containing the short-lived transient x-ray source MX2348-65 (IAUC 2869) was within the field of view of the Ariel 5 rotating modulation collimators around the time of the event. Data from Nov. 16d13h28m to 13h55m and from 14h13m to 14h46m UT (i.e., up to 2m prior to the event and from 34m afterwards) accumulated in 32s time bins show no excess flux comparable with the reported levels, thus setting tighter time limits on the duration of the event. During the period 11h27m to 13h25m the experiment was in rotating-modulation collimator mode, and there was a marginal detection of a source within the region. The significance of the detection is poor (3.5 sigma) but if real gives a much improved position: R.A. = 23h58m50s, Decl. = -64o06' (equinox 1950.0); the radius of the error circle is 0o.15. This position is 1o.2 from that previously reported. The intensity is 0.15 times that of the Crab. M. V. Penston has pointed out that CPD -64 4393 = SAO 255625 (mv = 9.0, spectrum M4) lies within the error circle."
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- December 1975
- Bibcode:
- 1975IAUC.2876....1W