SCULIB_JNU

Calculate the Rayleigh-Jeans corrected brightness temperature

Description:

This function calculates the Rayleigh-Jeans corrected brightness temperature of radiation at frequency NU (ν) and temperature T.
ȷν = XT exp(X) 1 (56)

where

X = hν kT (57)

If the absolute value of X is less than 1e-4 JNU = T, or if the absolute value of X is greater than 20 JNU = 0.

Invocation

JNU = SCULIB_JNU (NU, T, STATUS)

Arguments

NU = REAL (Given)
frequency (Hz)
T = REAL (Given)
temperature (K)
STATUS = INTEGER (Given and returned)
global status

Returned Value

SCULIB_JNU = REAL
Rayleigh-Jeans corrected brightness temperature

Copyright

Copyright ©1995,1996,1997,1998,1999 Particle Physics and Astronomy Research Council. All Rights Reserved.