New X-Ray Source
Abstract
Y. Tanaka and the Tenma Team report that a new x-ray source, located at R.A. = 3h31m05s +/- 12s, Decl. = +53deg00'6 +/- 3'0 (equinox 1950.0), was discovered from the x-ray satellite Tenma on Nov. 14. There is no previously catalogued source within the error circle. The source is peculiar in that its intensity shows erratic short-term variations, very similar to those of Cyg X-1, on timescales down to 100 ms. The average source intensity was constant at ~ 50 ufu during Nov. 14-18. The energy spectrum can be represented by a power law with a photon index of ~ 0.6 and a cutoff above 20 keV. The Hakucho satellite was due to take over observations after Nov. 19. Observers are urged to attempt to locate the source at optical and radio wavelengths.
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- November 1983
- Bibcode:
- 1983IAUC.3891....2T