LAL: FlatPulsarMetric.c File Reference

#include <math.h>
#include <gsl/gsl_block.h>
#include <gsl/gsl_vector.h>
#include <gsl/gsl_matrix.h>
#include <gsl/gsl_linalg.h>
#include <gsl/gsl_blas.h>
#include <gsl/gsl_integration.h>
#include <lal/DetectorStates.h>
#include <lal/PulsarTimes.h>
#include <lal/FlatPulsarMetric.h>

Detailed Description

Define Documentation

#define TRUE (1==1)

Definition at line 49 of file FlatPulsarMetric.c.

#define FALSE (1==0)

Definition at line 50 of file FlatPulsarMetric.c.

Enumeration Type Documentation

enum component_t

Enumerator:

COMP_RX
COMP_RY
COMP_S0
COMP_S1
COMP_S2
COMP_S3
COMP_LAST

Definition at line 55 of file FlatPulsarMetric.c.

Function Documentation

NRCSID	(	FLATPULSARMETRICC	,
		"$Id: FlatPulsarMetric.	c,
		v 1.4 2008/04/30 18:53:06 kipp Exp $"
	)

double Phi_i	(	double	ti,
		void *	params
	)

Definition at line 165 of file FlatPulsarMetric.c.

double Phi_i_Phi_j	(	double	ti,
		void *	params
	)

Definition at line 144 of file FlatPulsarMetric.c.

REAL8 cov_Phi_ij ( const cov_params_t * params )

Definition at line 87 of file FlatPulsarMetric.c.

int XLALFlatMetricCW	(	gsl_matrix *	gij,
		LIGOTimeGPS	refTime,
		LIGOTimeGPS	startTime,
		REAL8	Tspan,
		const EphemerisData *	edat
	)

Compute a flat approximation for the continuous-wave metric (by neglecting the z-motion of the detector in ecliptic coordinates.

gij has to be an allocated symmetric matrix of dimension dim: the order of coordinates is $[ \omega_0, \tilde{n}_x, \tilde{n}_y, \omega_1, \omega_2, ... ]$ , but dim must be at least 3 and maximally 6 (Freq + 2 sky + 3 spin-downs) The dimensionless coordinates are defined as $\omega_s \equiv 2\pi \, f^{(s)}\, T^{s+1} / (s+1)!$ in terms of the observation time $T$ , and $\tilde{n}_l \equiv 2\pi \bar{f} \hat{n} R_{orb} / c$ , where $R_{orb}$ is the orbital radius (AU).

Parameters:

gij	[out] metric
refTime	[in] reference time for spin-parameters
startTime	[in] startTime
Tspan	[in] total observation time spanned
edat	[in] ephemeris data

Definition at line 227 of file FlatPulsarMetric.c.

void LALFlatPulsarMetric	(	LALStatus *	status,
		REAL8Vector **	metric,
		LIGOTimeGPS	startTime,
		REAL8	duration,
		const LALDetector *	site
	)

[OBSOLETE?] Compute the constant-coefficient approximate pulsar-metric.

The returned metric symmetric matrix $g_{\alpha \beta}$ is encoded in a 1D vector $v_l$ in the same way as in LALPulsarMetric(), namely: $g_{\alpha \beta} = v_l$ , where for $\alpha<=\beta$ the vector-index $l$ is $l = \alpha + \beta \,(\beta + 1)/2$ .

The (dimensionless) parameter-space coordinates (and their order) are: $\{ \kappa^X, \kappa^Y, \varpi_0, \varpi_1, \varpi_2, ...\}$ , defined as

$\kappa^i \equiv R_{ES} {2\pi \over c} f \, n^i\,,$

$\varpi_s \equiv T^{s+1}\, 2\pi f^{(s)}\,$

where $R_{ES} = 1\,\textrm{AU} \sim 1.5\times10^{11}$ m is the orbital radius, $f$ is the frequency, $n^i$ is the unit-vector pointing to a sky-location, $T$ is the observation time and $f^{(s)}$ is the s-th time-derivative of the frequency.

The two cartesian coordinate-directions $X, Y$ are referring to the ecliptic cartesian reference-frame.

Parameters:

metric	[out] constant pulsar-metric
startTime	start time of observation
duration	duration of observation in seconds
site	[in] detector location

Definition at line 338 of file FlatPulsarMetric.c.

FlatPulsarMetric.c File Reference

Data Structures

Defines

Enumerations

Functions

Variables

Detailed Description

Define Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation


Data Structures
struct	cov_params_t
Defines
#define	TRUE (1==1)
#define	FALSE (1==0)
Enumerations
enum	component_t { COMP_RX = -2, COMP_RY = -1, COMP_S0, COMP_S1, COMP_S2, COMP_S3, COMP_LAST }
Functions
	NRCSID (FLATPULSARMETRICC,"$Id: FlatPulsarMetric.c,v 1.4 2008/04/30 18:53:06 kipp Exp $")
double	Phi_i (double ti, void *params)
double	Phi_i_Phi_j (double ti, void *params)
REAL8	cov_Phi_ij (const cov_params_t *params)
int	XLALFlatMetricCW (gsl_matrix gij, LIGOTimeGPS refTime, LIGOTimeGPS startTime, REAL8 Tspan, const EphemerisData edat)
	Compute a flat approximation for the continuous-wave metric (by neglecting the z-motion of the detector in ecliptic coordinates.
void	LALFlatPulsarMetric (LALStatus status, REAL8Vector metric, LIGOTimeGPS startTime, REAL8 duration, const LALDetector site)
	[OBSOLETE?] Compute the constant-coefficient approximate pulsar-metric.
Variables
LALStatus	empty_status