Spectrum Configuration

Finally, the spectrum configuration tells TARDIS information needed for spectrum generation (see Spectrum Generation):

type	object
properties
start	type	quantity
stop	type	quantity
num	type	number
	multipleOf	1.0
method	The method to generate the final spectrum
	type	string
	enum	integrated, virtual, real
	default	virtual
integrated	type	object
	default
	properties
	points	Number of impact parameters p used in the calculation of the integrated spectrum
		type	number
		default	1000
	interpolate_shells	Number of shells on which the formal integral quantities are interpolated. For -1 no interpolation is used. The default is to use twice the number of computational shells but at least 80.
		type	number
		default	0
	additionalProperties	False
virtual	type	object
	default
	properties
	tau_russian	For optical depths greater tau_russian russian rouletting is used for the v-packets
		type	number
		default	10.0
	survival_probability	Probability for not terminating the packet path
		type	number
		default	0.0
	enable_biasing	If True bias v-packet emission based on the electron scattering optical depth
		type	boolean
		default	False
	virtual_packet_logging	If True, enable virtual packet logging output
		type	boolean
		default	False
	additionalProperties	False

Start and end are given as Quantities with units. If they are given in frequency space they are switched around if necessary. The number of bins is just an integer. Finally, the method option selects the final spectral synthesis mode. Currently, there are three options:

• real: construct spectrum from the real packet population alone

• virtual: use the virtual packet scheme for spectral synthesis

• integrated: use the formal integral method of Lucy 1999

Warning

Currently, the “integrated” mode only works with the downbranching line interaction mode. Note also the limitations listed at the bottom of the dedicated page.