X0331+53
Abstract
F. Makino and the Ginga Team, Institute of Space and Astronautical Science, telex: "Follow-up observations with the All Sky Monitor aboard Ginga showed that the transient x-ray source X0331+53 is still in a bright state (IAUC 4858). The x-ray intensity in 2-20 keV remained at 0.3 Crab from Sept. 21 through Oct. 1. A clear absorption feature, presumably due to cyclotron resonance, was discovered at about 29 keV in the x-ray spectra taken with the Large Area Counters."
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- October 1989
- Bibcode:
- 1989IAUC.4872....2M