ipymspectrum(temperature, eDensity, wavelength, filter=(<function gaussianR>, 1000.0), label=None, elementList=None, ionList=None, minAbund=None, keepIons=0, doLines=1, doContinuum=1, allLines=1, em=None, abundanceName=0, verbose=0, timeout=0.1)¶
this is the multiprocessing version of spectrum for using inside an IPython Qtconsole or notebook.
be for creating an instance, it is necessary to type something like the following into a console > ipcluster start –profile=notebook –n=3 this is the way to invoke things under the IPython 2.1 notation, a bit different in 2.0
Calculate the emission spectrum as a function of temperature and density.
temperature and density can be arrays but, unless the size of either is one (1), the two must have the same size
the returned spectrum will be convolved with a filter of the specified width on the specified wavelength array
the default filter is gaussianR with a resolving power of 100. Other filters, such as gaussian, box and lorentz, are available in ChiantiPy.filters. When using the box filter, the width should equal the wavelength interval to keep the units of the continuum and line spectrum the same.
A selection of elements can be make with elementList a list containing the names of elements that are desired to be included, e.g., [‘fe’,’ni’]
A selection of ions can be make with ionList containing the names of the desired lines in Chianti notation, i.e. C VI = c_6
Both elementList and ionList can not be specified at the same time
a minimum abundance can be specified so that the calculation can be speeded up by excluding elements with a low abundance. With solar photospheric abundances -
setting minAbund = 1.e-4 will include H, He, C, O, Ne setting minAbund = 2.e-5 adds N, Mg, Si, S, Fe setting minAbund = 1.e-6 adds Na, Al, Ar, Ca, Ni
Setting em will multiply the spectrum at each temperature by the value of em.
em [for emission measure], can be a float or an array of the same length as the temperature/density. allLines = 1 will include lines with either theoretical or observed wavelengths. allLines=0 will include only those lines with observed wavelengths
proc = the number of processors to use timeout - a small but non-zero value seems to be necessary