Given \(\tau_0\) and \(\tau_4\) solve for the mass ratio \(\eta.\). More...

Prototypes
void	LALEtaTau04 (LALStatus status, REAL8 x, REAL8 eta, void *p)

REAL8	XLALEtaTau04 (REAL8 eta, void *p)

Detailed Description

Given \(\tau_0\) and \(\tau_4\) solve for the mass ratio \(\eta.\).

Author: Sathyaprakash, B. S.

Description

Given \(\tau_0\) and \(\tau_4\) one can determine \(\eta\) by solving

\begin{equation} -\eta^{4/5} \tau_4 + A_4 \left ( \frac {\tau_0}{A_0} \right )^{1/5} \left (1 + B_4\eta + C_4 \eta^2 \right ) = 0, \end{equation}

where \(A_0 = 5/[256 (\pi f_{s} )^{8/3}],\) \(A_4 = 5 \times 3058673/ [128 \times 1016064 (\pi f_s)^{4/3}],\) \(B_4 = 5429 \times 1016064 /(1008 \times 3058673),\) and \(C_4 = 617 \times 1016064/(144 \times 3058673).\) This function returns the LHS of the above equation in x for a given eta.

Algorithm

None.

Uses

None.

Notes

The void pointer *p should point to a struct of type EtaTau04In

{
void *p;
EtaTau04In q;
...
p = (void *) &q;
}

Definition in file LALEtaTau04.c.

Go to the source code of this file.

Function Documentation

◆ LALEtaTau04()

void LALEtaTau04	(	LALStatus *	status,
		REAL8 *	x,
		REAL8	eta,
		void *	p
	)

Definition at line 67 of file LALEtaTau04.c.

◆ XLALEtaTau04()

REAL8 XLALEtaTau04	(	REAL8	eta,
		void *	p
	)

Definition at line 89 of file LALEtaTau04.c.

Prototypes