High energy emission and polarisation limits for the INTEGRAL burst GRB 061122

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Volume 499 / No 2 (May IV 2009)

A&A, 499 2 (2009) 465-472

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Table 3:

Spectral fit parameters for GRB 061122 with spectral models as described in Sect. 4.2 and reduced $\chi ^2$ per degrees of freedom (d.o.f.).
Detector	Spectral	$\alpha$ ^a	$\beta$	E₀/kT	$E_{\rm peak}$	$\chi^2_{\rm red}$	Fluence^b
	model			(keV)	(keV)	/d.o.f.	(10^-6 erg cm^-2)
	PL	-1.67	...	...	...	3.92/58	$\rm 17.79 ^{+0.23}_{-0.32}$
SPI^c	GRBM	$\rm -0.98^{+0.11}_{-0.12}$	$\rm -2.72^{+0.34}_{-0.85}$	$166^{\rm +39}_{-28}$	$\rm 169^{+44}_{-35}$	1.19/56	$\rm 19.63 ^{+0.16}_{-0.71}$
	BB+PL	$\rm -1.81^{+0.08}_{-0.07}$	...	$36\pm 3$	...	1.21/56	$19.96 ^{\rm +0.54}_{-0.71}$
	Cutoff PL	$\rm -1.01^{+0.10}_{-0.11}$	...	...	$\rm 179^{+38}_{-28}$	1.24/57	$\rm 19.64^{+0.64}_{-1.47}$
	PL	-1.47	...	...	...	2.30/92	$\rm 5.13 ^{+0.09}_{-0.11}$
Joint Fit	GRBM	$\rm -1.14^{+0.27}_{-0.32}$	$\rm -1.91^{+0.07}_{-0.10}$	$\rm 81^{+120}_{-70}$	$\rm 70^{+106}_{-63}$	1.35/90	$\rm 8.80 ^{+0.11}_{-4.62}$
(IBIS & SPI)	BB+PL	$-1.74 \pm 0.07$	...	$\rm 15^{+4}_{-3}$	...	1.40/90	$\rm 8.36 ^{+0.04}_{-0.29}$
	Cutoff PL	$\rm -0.97^{+0.12}_{-0.13}$	...	...	$\rm 129^{+45}_{-29}$	1.45/91	$\rm 5.10^{+0.33}_{-0.60}$
KONUS^d	Cutoff PL	$\rm -1.03^{+0.06}_{-0.07}$	...	...	$\rm 160^{+8}_{-7}$	1.03/62	$\rm 23.1^{+0.5}_{-1.2}$

^a Low energy photon index in the Band model/single power-law index for the PL/BB+PL/Cutoff PL models. ^b 20-200 keV.

^c 20 keV-8 MeV. ^d KONUS-WIND spectral parameters are taken from Golenetskii et al. (2006) and are in the energy range 20 keV-2 MeV.

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