Imaging the positron annihilation line with 20 years of INTEGRAL/SPI observations

Open Access

Table 1

List of bright sources subtracted in the image reconstruction.

Name	Location		Flux
	l (deg)	b (deg)	(×10⁻⁵ cm⁻² s⁻¹)
Crab	184.55	−5.78	11.08
Cygnus X-1	71.33	3.07	3.54
SWIFT J1753.5-0127	24.90	12.19	1.44
PSR B1509-58	320.31	−1.15	0.83
GRS 1915+105	45.37	−0.22	0.71
Centaurus A	309.52	19.42	0.62
3C 273	289.95	64.36	0.43

Notes. The fluxes shown here are integrated over the energy range of 508 keV to 514 keV. The source locations are given in Galactic coordinates.

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