Re: LB obs 2004-11-14

From: b_gimle@algonet.se
Date: Mon Nov 15 2004 - 03:54:02 EST

  • Next message: Robert Holdsworth: "SWIFT launch today"

    Leo reprted:
    >
    >86- 61 A 04-11-14 18:37:57   LB   95.6 0.2  47  2.034 AA, 4->i
    >Timings: 2.29 7.54 5.89 4.09 10.01 9.87 6.64 4.13 4.55 3.93
    >3.57 7.92 2.46 3.40 6.67 7.35 2.50 2.77 sec
    >Hard to figure a correct period from this randomly taken timings.
    >
    I agree - a previous statement by me should be moderated:
    "It is easier to detect correct flashing patterns when timing flashes
    at random intervals - if it is inconvenient or impossible to time all,
    and some sequences contain each flash, and/or the basic period
    is already known."
    
    However, graphing the flashes using Leo's period and Synodic.exe
    I spotted three intervals a little shorter than 5*2.034 s (flashes
    0-2, 7-8, 17-19) and many showing the same slope, but at different
    intervals. Despite an arithmetic error that made my guess 9.17 s,
    a plot of this period immediately revealed a good pattern at about
    9.95 s (0-2, 2-4, 4-5, 5-6, 11-13, 13-15, 15-17)
    
    The last three intervals are displaced by +1/3 period.
    There is an indication of flashes no. 3,7,9,14,18 being around
    +2/3 period displacement. Flashes 8,12,16 show an interval of
    twice the assumed period (19.9s). This leaves only flash no. 1,
    which could be a precursor of 11...17, and flash no. 10.
    
    (graphs and data on request)
    
    /Björn
    
    
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