Distribution of the number of peaks within a long gamma-ray burst

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Volume 685 (May 2024)

A&A, 685 (2024) A34

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Table 1.

Best-fit values and 90% confidence intervals of the parameters of the mixture model of two exponentials (Eq. (1)) applied to the different data sets.

Catalog	N^(a)	N_p^(b)	k	n₁	⟨n⁽¹⁾⟩ ^(c)	n₂	⟨n⁽²⁾⟩ ^(c)	ξ	^(d)	χ² test
										p-value
BATSE	1457	8112								0.164
BAT	1277	3817	0.78 ± 0.08	1.47 ± 0.17	2.03 ± 0.17					0.845
BeppoSAX	820	2151								0.440
HXMT	202	616								0.600
All ^(e)	3756	14 696	0.59 ± 0.03		2.36 ± 0.10				0.20 ± 0.03	0.033
W. aver. ^(f)	–	–	–	–	2.1 ± 0.1	–	8.3 ± 0.1	–	0.19 ± 0.03	–

Notes.

^(a)

Number of GRBs.

^(b)

Total number of peaks.

^(c)

Expected number of peaks per GRB of the corresponding exponential component, calculated as in Eq. (2).

^(d)

Defined in Eq. (3), it is the total fraction of GRBs contributed by the second exponential, characterised by a higher average number of peaks per GRB.

^(e)

All data sets have been merged together and treated as one sample.

^(f)

Weighted average value using the different estimates of the four catalogues.

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