X-Ray Flare
Abstract
L. J. Kaluzienski and S. S. Holt, Goddard Space Flight Center, report that 3-6 keV (fine spatial mode) observations with the Ariel 5 all-sky monitor have revealed a strong x-ray flare from a region centered on l = 359o.3 +/- 1o.0, b = +8o.9 +/- 1o.5 (R.A. = 17h08m, Decl. = -24o.5, equinox 1950.0; 90-percent-confidence error box). Upon entry of the source into the instrument's field of view late on Aug. 31 the flux was measured at 0.43 +/- 0.14 (half-day average measured relative to the Crab Nebula). Subsequent observations yielded a source intensity of 0.73 +/- 0.09 (Sept. 3) and 0.63 +/- 0.10 (Sept. 5). It can be noted that the source 4U 1708-23 (maximum 4U flux about 0.03 times the Crab) lies ~ 0o.3 from the edge of the error box.
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- September 1977
- Bibcode:
- 1977IAUC.3104....3K