Table 1:

Model parameters for the flare of 2006 July 17.

Srl. No.	Parameter	Value	Unit
1		4
2	Distance*	8.4	kpc
3	Inclination*	90	degrees
4	r0	7
5	h0	9
6	B0	147	Gauss
7	n0	7	104 cm
8		7	1010 K
9	t0	5.90	h UT
10		1800	s
11		0.60
12		0.12

The mass ( ) and distance were taken from their latest estimates (see e.g., Gillessen et al. 2009; Reid et al. 2009). Inclination of the jet axis to the line of sight was fixed to 90 degrees. The base of the jet is parametrized by radius of the nozzle (r₀), location of the sonic point (h₀), magnetic field strength (B₀), number density (n₀), and temperature () of the thermal leptons. The flare is characterized by its start time (t₀), duration (), density enhancement fraction (), and expansion speed of the overdense region (, as a fraction of the sound speed). Parameters marked with an asterisk (^*) were not varied during fitting.