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Table 2

Transient outbursts from IGR J00291+5934.

Outburst start Duration Intervala F peak,bol b Fluencec FX d Refs.
calendar date d yr 10-9 erg cm-2 s-1 10-3 erg cm-2 10-11 erg cm-2 s-1

26 Nov. 1998 >2.9 (<1.8)
11 Sep. 2001 2.8 (1.8)
2 Dec. 2004 14 3.2 2.9 ± 0.2 1.6 ± 0.2 1.6 ± 0.2 [1]
13 Aug. 2008 9 3.7 1.5 ± 0.2 0.76 ± 0.03 0.65 ± 0.03 [2]
18 Sep. 2008 15 0.1 1.1 ± 0.1 0.79 ± 0.03 25 ± 1 [2]
22 Jul. 2015 25 6.9 3.5 ± 0.2 2 ± 0.1 0.9 ± 0.1 [3]

Notes.

(a)

The epoch for the outburst prior to the first known is assumed to be earlier than the first RXTE/ASM measurements (typically 1996 January 6 or 50 088 MJD).

(b)

The peak bolometric flux is in the 0.1–250 keV energy range.

(c)

Bolometric fluence.

(d)

Estimated time-averaged bolometric flux. Values in parentheses are estimated from the RXTE/ASM intensity, since RXTE/PCA measurements are not available at the outburst peak, and are approximate.

Reference. [1] Galloway et al. (2005); [2] Hartman et al. (2011); [3] this paper.

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