GILBERTSON22_LX_TAU#
Name#
GILBERTSON22_LX_TAU
Purpose#
Produces the 2-10 keV LMXB and HMXB luminosities appropriate for the stellar population(s), according to the \(L_X/M\) parametrizations with stellar age (that is, \(\tau = \log(\rm age)\)) from Gilbertson et al. (2022).
Calling Sequence#
Lnu_XRB = gilbertson22_LX_tau(stellar_models, psi [, /error_check, $
Lnu_LMXB_steps=Lnu_LMXB_steps, Lnu_HMXB_steps=Lnu_HMXB_steps])
Inputs#
stellar_models
structureA structure containing the spectra, SEDs, and stellar parameters for the non-parametric stellar model. (See
binned_stellar_models.pro
for details and contents.)psi
int, float, or double array(Nsteps, Nmodels)The non-parametric SFH coefficients \([M_\odot\ {\rm yr}^{-1}]\).
Optional Input#
error_check
flagIf set, all inputs are checked for errors. Otherwise, all inputs are assumed to be of correct format.
Output#
Lnu_XRB
double array(2, Nmodels)The total LMXB (first column) and HMXB (second column) 2-10 keV luminosities \([L_\odot\ {\rm Hz}^{-1}]\).
Optional Outputs#
Lnu_LMXB_steps
double array(Nsteps, Nmodels)2-10 keV Lnu from LMXBs for each stellar age bin \([L_\odot\ {\rm Hz}^{-1}]\).
Lnu_HMXB_steps
double array(Nsteps, Nmodels)2-10 keV Lnu from HMXBs for each stellar age bin \([L_\odot\ {\rm Hz}^{-1}]\).
Notes#
The parametrizations of \(\gamma = L_X / M\) as a function of stellar age are as follows:
\(\gamma(t_{\rm age}) = \gamma_{\rm HMXB}(t_{\rm age}) + \gamma_{\rm LMXB}(t_{\rm age}) = [a_0(\tau - b_0)^2 + c_0] + [a_1(\tau - b_1)^2 + c_1]\)
where \(\tau = \log_{10}(t_{\rm age})\). Gilbertson et al. (2022) has:
\(a_0 = -0.24 \ [{\rm erg s^{-1}\ M_\odot^{-1}}\ \log({\rm yr})^{-1}]\)
\(b_0 = 5.23 \ [\log({\rm yr})^{-1}]\)
\(c_0 = 32.54 \ [{\rm erg s^{-1}\ M_\odot^{-1}}]\)
\(a_1 = -1.21 \ [{\rm erg s^{-1}\ M_\odot^{-1}}\ \log({\rm yr})^{-1}]\)
\(b_1 = 9.32 \ [\log({\rm yr})^{-1}]\)
\(c_1 = 29.09 \ [{\rm erg s^{-1}\ M_\odot^{-1}}]\)
Reference#
Gilbertson, W., Lehmer, B. D., Doore, K., et al. 2022, ApJ, 926, 28
Modification History#
2022/04/21: Created (Erik B. Monson)
2022/06/20: Renamed variables to common naming scheme (Keith Doore)
2022/06/20: Replaced
!cv
with!lightning_cgs
(Keith Doore)2022/06/20: Updated documentation (Keith Doore)
2022/06/20: Added error handling (Keith Doore)
2022/06/20: Added
error_check
keyword to do error handling (Keith Doore)2022/07/12: Removed reforming of
psi
ifNmodels=1
as it is not necessary (Keith Doore)