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Fig. 4

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Left: flux time history of 2FGL J1045.0−5941 obtained by likelihood analysis. Each bin represents five months of data in the 10 to 300 GeV energy band. The flux error bars are of 1σ type. The upper limit was determined as described in Fig. 2. The dashed vertical line indicates the time of the periastron passage of the η Car binary system. Right: cumulative TS-value evaluation of 2FGL J1045.0−5941 as obtained by likelihood analysis in the 10 to 300 GeV energy band. Each data point represents the cumulative TS-value of the source for the time interval from the start of the Fermi-LAT data taking. The dotted blue line is a linear fit to the first four data points. The dashed green line connects the origin and the cumulative TS-value obtained last.

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