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BATSE Pulsars
4U 1538-52

Source Not Detected with Standard 1-day Monitor

CGRO/BATSE Mission Frequency History

Data for the above plot are obtained from an enhanced analysis. One frequency measurement per 22.38 days (6x system orbital period) is made.
PS file FITS file (FITS readme file) Typical Pulse Profile

Long-term Frequency History

The same BATSE data is plotted here, along with measurements of the source made since discovery of pulsations.
PS file