Multiwavelength study of the flaring activity of Sagittarius A in 2014 February−April

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Volume 589 (May 2016)

A&A, 589 (2016) A116

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Table 7

Spectral properties of the X-ray flares observed by XMM-Newton.

Flare day	N _H ^a	Γ ^b	^c	^d	^h
(yy-mm-dd)	(10²² cm^-2)		(10^-12 erg s^-1 cm^-2)	(10³⁴ erg s^-1)

2014-03-10^e	23.7 (14.5−−37.5)	3.1 (2.1−−4.5)	10.1 (4.9−−33.5)	7.7 (3.7−−25.6)	1.65
2014-04-02^e	9.8 (2.0−−23.5)	2.2 (0.7−−4.7)	6.3 (3.5−−25.7)	4.8 (2.7−−19.7)	1.72
2002-10-03^f	16.1 (13.9–18)	2.3 (2.0–2.6)	26.0 (22.5–30.6)	19.8 (17.1–23.3)
2007-04-04^g	16.3 (13.7–19.3)	2.4 (2.1–2.8)	16.8 (13.8–21.4)	12.8 (10.5–16.3)

Notes.

^(a)

Hydrogen column density;

^(b)

Photon index of the power law;

^(c)

Unabsorbed average flux between 2 and 10 keV;

^(d)

Unabsorbed average luminosity between 2 and 10 keV assuming a distance of 8 kpc;

^(e)

Spectral properties of the EPIC/pn spectrum computed using the MCMC method. The range given between parenthesis represents the 90% confidence interval;

^(f)

Spectral properties of the EPIC (pn+MOS1+MOS2) spectrum. See Porquet et al. (2003) and Nowak et al. (2012);

^(g)

Spectral properties of the EPIC (pn+MOS1+MOS2) spectrum. See Porquet et al. (2008) and Nowak et al. (2012);

^(h)

Reduced χ² for 3 degrees of freedom.

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