L2KEV_J07#

Name#

L2KEV_J07

Purpose#

Calculates the 2 keV monochromatic luminosity of an AGN given its intrinsic monochromatic luminosity at 2500 Angstroms using the Just et al. (2007) relationship:

\(\alpha_{ox} = -0.137 \log(L_{2500}) + 2.638\)

for \(L_{2500}\) in \(\rm ergs\ s^{-1}\ Hz^{-1}\), and the definition of \(\alpha_{ox}\), the UV-to-X-ray slope:

\(\alpha_{ox} = -0.3838 \log(L_{2500} / L_{\rm 2keV})\).

Calling Sequence#

L2keV = L2keV_J07(L2500 [, dalpha = , /error_check])

Input#

L2500float or double array(…)

The rest-frame 2500 Angstrom monochromatic luminosity \([L_\odot\ {\rm Hz}^{-1}]\).

Optional Inputs#

dalphafloat or double array(…)

Deviation from Just et al. (2007) relationship. A “fudge factor” added to the expected value of \(\alpha_{ox}\). (Default = 0.0)

error_checkflag

If set, all inputs are checked for errors. Otherwise, all inputs are assumed to be of correct format.

Outputs#

L2keVdouble array(…)

The 2 keV monochromatic luminosity \([L_\odot\ {\rm Hz}^{-1}]\).

Reference#

Just, D. W., Brandt, W. N., Shemmer, O., et al. 2007, ApJ, 665, 2

Modification History#

  • 2021/03/19: Created (Erik B. Monson)

  • 2022/03/16: Moved to separate file and documentation improved (Erik B. Monson).

  • 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)

  • 2022/06/20: Removed alpha_ox_L2500_J07 function, since only one line of code (Keith Doore)