Add low frequency formula for thermoelastic noise from Cerdonio
Adds low frequency formula for thermoelastic noise from 10.1103/PhysRevD.63.082003.
Also fixes a typo in the infrasound label (no change to calculation).
Edited by Kevin Kuns
Adds low frequency formula for thermoelastic noise from 10.1103/PhysRevD.63.082003.
Also fixes a typo in the infrasound label (no change to calculation).