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Next: 2.9.4 PHA Up: 2.9 Hotspot appearance Previous: 2.9.2 Spatial

  
2.9.3 Temporal

For #1, an examination of light curves and plots of the KS test show that there are many intervals and obis when no activity is seen. #2 is quite different, being more steady (less ``sparking'' or ``flickering''). For the first two, the average count rate drops quickly as the length of the time bin is increased. As mentioned previously, #3 is relatively constant.



 HS #1#2#3
    
First known occurrence8Jul95/rh800694mid-Mar9527Jan97
    
Largest known c/s (1 s bins)57(rh300399)much less than #1-----
Largest known <c/s> for a seq:0.76 (17.2 ks)0.0177(28 ks)0.039(2.5 ksec)
   (rh202596)
Incidence of Detection120 out of 240 seqs;7/240almost all
(Jul-Sep 1995)   

During 1996, the activity of hotspots #1 and #2 subsided to the extent that they are only detectable on rare occasions using their known location for precise measurements. However #1 occassionally reappears (1997).


next up previous contents
Next: 2.9.4 PHA Up: 2.9 Hotspot appearance Previous: 2.9.2 Spatial
rsdc@cfa.harvard.edu
1999-05-25