UNUSED static REAL8 XLALSimInspiralNRWaveformCheckFRef(
UNUSED LALH5File* file,
UNUSED REAL8 fRef
)
{
gsl_vector *omega_w_vec = NULL;
LALH5File *omega_group = NULL;
REAL8 min_fref, lowest_arr_fref;
if (fRef > 0)
{
/* This is the declared f_lower (using 1MSUN total mass) */
XLALH5FileQueryScalarAttributeValue(&min_fref, file, "f_lower_at_1MSUN");
/* This is the lowest f_lower in the Omega-vs-time array */
omega_group = XLALH5GroupOpen(file, "Omega-vs-time");
ReadHDF5RealVectorDataset(omega_group, "Y", &omega_w_vec);
lowest_arr_fref = gsl_vector_get(omega_w_vec, 0);
lowest_arr_fref = lowest_arr_fref / (LAL_MTSUN_SI * LAL_PI);
gsl_vector_free(omega_w_vec);
/* First, is fRef smaller than min_fref?
* Allow some float-precision slop */
if (fRef < 0.9999 * min_fref)
{
XLAL_ERROR(XLAL_EINVAL, "The supplied reference frequency is lower than the start frequency of the waveform. Start frequency (scaled by total mass) is %e and supplied fRef (scaled by total mass) is %e.\n", min_fref, fRef);
}
/* The Omega array may not quite extend to the minimum fRef, if that
* happens, fall back on the attribute values. */
if (fRef < lowest_arr_fref)
{
fRef = -1;
}
}
return fRef;
}
/* Everything needs to be declared as unused in case HDF is not enabled. */
UNUSED static UINT4 XLALSimInspiralNRWaveformGetSpinsFromHDF5FilePointer(
UNUSED REAL8 *S1x, /**< [out] Dimensionless spin1x in LAL frame */
UNUSED REAL8 *S1y, /**< [out] Dimensionless spin1y in LAL frame */
UNUSED REAL8 *S1z, /**< [out] Dimensionless spin1z in LAL frame */
UNUSED REAL8 *S2x, /**< [out] Dimensionless spin2x in LAL frame */
UNUSED REAL8 *S2y, /**< [out] Dimensionless spin2y in LAL frame */
UNUSED REAL8 *S2z, /**< [out] Dimensionless spin2z in LAL frame */
UNUSED LALH5File* file /**< Pointer to HDF5 file */
)
{
#ifndef LAL_HDF5_ENABLED
XLAL_ERROR(XLAL_EFAILED, "HDF5 support not enabled");
#else
REAL8 nrSpin1x, nrSpin1y, nrSpin1z, nrSpin2x, nrSpin2y, nrSpin2z;
REAL8 ln_hat_x, ln_hat_y, ln_hat_z, n_hat_x, n_hat_y, n_hat_z;
XLALH5FileQueryScalarAttributeValue(&nrSpin1x, file, "spin1x");
XLALH5FileQueryScalarAttributeValue(&nrSpin1y, file, "spin1y");
XLALH5FileQueryScalarAttributeValue(&nrSpin1z, file, "spin1z");
XLALH5FileQueryScalarAttributeValue(&nrSpin2x, file, "spin2x");
XLALH5FileQueryScalarAttributeValue(&nrSpin2y, file, "spin2y");
XLALH5FileQueryScalarAttributeValue(&nrSpin2z, file, "spin2z");
XLALH5FileQueryScalarAttributeValue(&ln_hat_x , file, "LNhatx");
XLALH5FileQueryScalarAttributeValue(&ln_hat_y , file, "LNhaty");
XLALH5FileQueryScalarAttributeValue(&ln_hat_z , file, "LNhatz");
XLALH5FileQueryScalarAttributeValue(&n_hat_x , file, "nhatx");
XLALH5FileQueryScalarAttributeValue(&n_hat_y , file, "nhaty");
XLALH5FileQueryScalarAttributeValue(&n_hat_z , file, "nhatz");
*S1x = nrSpin1x * n_hat_x + nrSpin1y * n_hat_y + nrSpin1z * n_hat_z;
*S1y = nrSpin1x * (-ln_hat_z * n_hat_y + ln_hat_y * n_hat_z)
+ nrSpin1y * (ln_hat_z * n_hat_x - ln_hat_x * n_hat_z)
+ nrSpin1z * (-ln_hat_y * n_hat_x + ln_hat_x * n_hat_y) ;
*S1z = nrSpin1x * ln_hat_x + nrSpin1y * ln_hat_y + nrSpin1z * ln_hat_z;
*S2x = nrSpin2x * n_hat_x + nrSpin2y * n_hat_y + nrSpin2z * n_hat_z;
*S2y = nrSpin2x * (-ln_hat_z * n_hat_y + ln_hat_y * n_hat_z)
+ nrSpin2y * (ln_hat_z * n_hat_x - ln_hat_x * n_hat_z)
+ nrSpin2z * (-ln_hat_y * n_hat_x + ln_hat_x * n_hat_y);
*S2z = nrSpin2x * ln_hat_x + nrSpin2y * ln_hat_y + nrSpin2z * ln_hat_z;
return XLAL_SUCCESS;
#endif
}
/* Everything needs to be declared as unused in case HDF is not enabled. */
int XLALSimInspiralNRWaveformGetHplusHcross(
UNUSED REAL8TimeSeries **hplus, /**< Output h_+ vector */
UNUSED REAL8TimeSeries **hcross, /**< Output h_x vector */
UNUSED REAL8 phiRef, /**< orbital phase at reference pt. */
UNUSED REAL8 inclination, /**< inclination angle */
UNUSED REAL8 deltaT, /**< sampling interval (s) */
UNUSED REAL8 m1, /**< mass of companion 1 (kg) */
UNUSED REAL8 m2, /**< mass of companion 2 (kg) */
UNUSED REAL8 r, /**< distance of source (m) */
UNUSED REAL8 fStart, /**< start GW frequency (Hz) */
UNUSED REAL8 fRef, /**< reference GW frequency (Hz) */
UNUSED REAL8 s1x, /**< initial value of S1x */
UNUSED REAL8 s1y, /**< initial value of S1y */
UNUSED REAL8 s1z, /**< initial value of S1z */
UNUSED REAL8 s2x, /**< initial value of S2x */
UNUSED REAL8 s2y, /**< initial value of S2y */
UNUSED REAL8 s2z, /**< initial value of S2z */
UNUSED const char *NRDataFile /**< Location of NR HDF file */
)
{
#ifndef LAL_HDF5_ENABLED
XLAL_ERROR(XLAL_EFAILED, "HDF5 support not enabled");
#else
/* Declarations */
UINT4 curr_idx;
INT4 model, modem;
size_t array_length;
REAL8 nrEta;
REAL8 S1x, S1y, S1z, S2x, S2y, S2z;
REAL8 Mflower, time_start_M, time_start_s, time_end_M, time_end_s;
REAL8 chi, est_start_time, curr_h_real, curr_h_imag;
REAL8 theta, psi, calpha, salpha;
REAL8 distance_scale_fac;
COMPLEX16 curr_ylm;
REAL8TimeSeries *hplus_corr;
REAL8TimeSeries *hcross_corr;
/* These keys follow a strict formulation and cannot be longer than 11
* characters */
char amp_key[20];
char phase_key[20];
gsl_vector *tmpVector=NULL;
LALH5File *file, *group;
LIGOTimeGPS tmpEpoch = LIGOTIMEGPSZERO;
REAL8Vector *curr_amp, *curr_phase;
/* Use solar masses for units. NR files will use
* solar masses as well, so easier for that conversion
*/
m1 = m1 / LAL_MSUN_SI;
m2 = m2 / LAL_MSUN_SI;
file = XLALH5FileOpen(NRDataFile, "r");
/* Sanity checks on physical parameters passed to waveform
* generator to guarantee consistency with NR data file.
*/
XLALH5FileQueryScalarAttributeValue(&nrEta, file, "eta");
if (fabs((m1 * m2) / pow((m1 + m2),2.0) - nrEta) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "MASSES ARE INCONSISTENT WITH THE MASS RATIO OF THE NR SIMULATION.\n");
}
/* Read spin metadata, L_hat, n_hat from HDF5 metadata and make sure
* the ChooseTDWaveform() input values are consistent with the data
* recorded in the metadata of the HDF5 file.
* PS: This assumes that the input spins are in the LAL frame!
*/
XLALSimInspiralNRWaveformGetSpinsFromHDF5FilePointer(&S1x, &S1y, &S1z,
&S2x, &S2y, &S2z, file);
if (fabs(S1x - s1x) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN1X IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
if (fabs(S1y - s1y) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN1Y IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
if (fabs(S1z - s1z) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN1Z IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
if (fabs(S2x - s2x) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN2X IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
if (fabs(S2y - s2y) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN2Y IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
if (fabs(S2z - s2z) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN2Z IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
/* First estimate the length of time series that is needed.
* Demand that 22 mode that is present and use that to figure this out
*/
XLALH5FileQueryScalarAttributeValue(&Mflower, file, "f_lower_at_1MSUN");
/* Figure out start time of data */
group = XLALH5GroupOpen(file, "amp_l2_m2");
ReadHDF5RealVectorDataset(group, "knots", &tmpVector);
time_start_M = (REAL8)(gsl_vector_get(tmpVector, 0));
time_end_M = (REAL8)(gsl_vector_get(tmpVector, tmpVector->size - 1));
gsl_vector_free(tmpVector);
time_start_s = time_start_M * (m1 + m2) * LAL_MTSUN_SI;
time_end_s = time_end_M * (m1 + m2) * LAL_MTSUN_SI;
/* We don't want to return the *entire* waveform if it will be much longer
* than the specified f_lower. Therefore guess waveform length using
* the SEOBNR_ROM function and add 10% for safety.
* FIXME: Is this correct for precessing waveforms?
*/
chi = XLALSimIMRPhenomBComputeChi(m1, m2, s1z, s2z);
est_start_time = XLALSimIMRSEOBNRv2ChirpTimeSingleSpin(m1 * LAL_MSUN_SI,
m2 * LAL_MSUN_SI, chi, fStart);
est_start_time = (-est_start_time) * 1.1;
if (est_start_time > time_start_s)
{
/* Restrict start time of waveform */
time_start_s = est_start_time;
time_start_M = time_start_s / ((m1 + m2) * LAL_MTSUN_SI);
}
else if (fStart < Mflower / (m1 + m2) )
{
XLAL_ERROR(XLAL_EDOM, "WAVEFORM IS NOT LONG ENOUGH TO REACH f_low. %e %e %e",
fStart, Mflower, Mflower / (m1 + m2));
}
array_length = (UINT4)(ceil( (time_end_s - time_start_s) / deltaT));
/* Compute correct angles for hplus and hcross following LAL convention. */
theta = psi = calpha = salpha = 0.;
XLALSimInspiralNRWaveformGetRotationAnglesFromH5File(&theta, &psi, &calpha,
&salpha, file, inclination, phiRef);
/* Create the return time series, use arbitrary epoch here. We set this
* properly later. */
XLALGPSAdd(&tmpEpoch, time_start_s);
*hplus = XLALCreateREAL8TimeSeries("H_PLUS", &tmpEpoch, 0.0, deltaT,
&lalStrainUnit, array_length );
*hcross = XLALCreateREAL8TimeSeries("H_CROSS", &tmpEpoch, 0.0, deltaT,
&lalStrainUnit, array_length );
hplus_corr = XLALCreateREAL8TimeSeries("H_PLUS", &tmpEpoch, 0.0, deltaT,
&lalStrainUnit, array_length );
hcross_corr = XLALCreateREAL8TimeSeries("H_CROSS", &tmpEpoch, 0.0, deltaT,
&lalStrainUnit, array_length );
for (curr_idx = 0; curr_idx < array_length; curr_idx++)
{
hplus_corr->data->data[curr_idx] = 0.0;
hcross_corr->data->data[curr_idx] = 0.0;
}
/* Create the distance scale factor */
distance_scale_fac = (m1 + m2) * LAL_MRSUN_SI / r;
/* Generate the waveform */
for (model=2; model < 9 ; model++)
{
for (modem=-model; modem < (model+1); modem++)
{
snprintf(amp_key, sizeof(amp_key), "amp_l%d_m%d", model, modem);
snprintf(phase_key, sizeof(phase_key), "phase_l%d_m%d", model, modem);
/* Check that both groups exist */
if (XLALH5CheckGroupExists(file, amp_key) == 0)
{
continue;
}
if (XLALH5CheckGroupExists(file, phase_key) == 0)
{
continue;
}
/* Get amplitude and phase from file */
XLALSimInspiralNRWaveformGetDataFromHDF5File(&curr_amp, file, (m1 + m2),
time_start_s, array_length, deltaT, amp_key);
XLALSimInspiralNRWaveformGetDataFromHDF5File(&curr_phase, file, (m1 + m2),
time_start_s, array_length, deltaT, phase_key);
curr_ylm = XLALSpinWeightedSphericalHarmonic(theta, psi, -2,
model, modem);
for (curr_idx = 0; curr_idx < array_length; curr_idx++)
{
curr_h_real = curr_amp->data[curr_idx]
* cos(curr_phase->data[curr_idx]) * distance_scale_fac;
curr_h_imag = curr_amp->data[curr_idx]
* sin(curr_phase->data[curr_idx]) * distance_scale_fac;
hplus_corr->data->data[curr_idx] = hplus_corr->data->data[curr_idx]
+ curr_h_real * creal(curr_ylm) - curr_h_imag * cimag(curr_ylm);
hcross_corr->data->data[curr_idx] = hcross_corr->data->data[curr_idx]
- curr_h_real * cimag(curr_ylm) - curr_h_imag * creal(curr_ylm);
}
XLALDestroyREAL8Vector(curr_amp);
XLALDestroyREAL8Vector(curr_phase);
}
}
/* Correct for the "alpha" angle as given in T1600045 to translate
* from the NR wave frame to LAL wave-frame
* Helper time series needed.
*/
for (curr_idx = 0; curr_idx < array_length; curr_idx++)
{
(*hplus)->data->data[curr_idx] =
(calpha*calpha - salpha*salpha) * hplus_corr->data->data[curr_idx]
- 2.0*calpha*salpha * hcross_corr->data->data[curr_idx];
(*hcross)->data->data[curr_idx] =
+ 2.0*calpha*salpha * hplus_corr->data->data[curr_idx]
+ (calpha*calpha - salpha*salpha) * hcross_corr->data->data[curr_idx];
}
XLALDestroyREAL8TimeSeries(hplus_corr);
XLALDestroyREAL8TimeSeries(hcross_corr);
XLALH5FileClose(file);
return XLAL_SUCCESS;
#endif
}
UNUSED static UINT4 XLALSimInspiralNRWaveformGetRotationAnglesFromH5File(
UNUSED REAL8 *theta, /**< Returned inclination angle of source */
UNUSED REAL8 *psi, /**< Returned azimuth angle of source */
UNUSED REAL8 *calpha, /**< Returned cosine of the polarisation angle */
UNUSED REAL8 *salpha, /**< Returned sine of the polarisation angle */
UNUSED LALH5File* filepointer, /**< Pointer to NR HDF5 file */
UNUSED const REAL8 inclination, /**< Inclination of source */
UNUSED const REAL8 phi_ref /**< Orbital reference phase*/
)
{
#ifndef LAL_HDF5_ENABLED
XLAL_ERROR(XLAL_EFAILED, "HDF5 support not enabled");
#else
/* Compute the angles necessary to rotate from the intrinsic NR source frame
* into the LAL frame. See DCC-T1600045 for details.
*/
/* Attribute declarations go in here */
/* Declarations */
REAL8 orb_phase, ln_hat_x, ln_hat_y, ln_hat_z, ln_hat_norm;
REAL8 n_hat_x, n_hat_y, n_hat_z, n_hat_norm;
REAL8 corb_phase, sorb_phase, sinclination, cinclination;
REAL8 ln_cross_n_x, ln_cross_n_y, ln_cross_n_z;
REAL8 z_wave_x, z_wave_y, z_wave_z;
REAL8 stheta, ctheta, spsi, cpsi, theta_hat_x, theta_hat_y, theta_hat_z;
REAL8 psi_hat_x, psi_hat_y, psi_hat_z;
REAL8 n_dot_theta, ln_cross_n_dot_theta, n_dot_psi, ln_cross_n_dot_psi;
REAL8 y_val;
/* Following section IV of DCC-T1600045
* Step 1: Define Phi = phiref/2 ... I'm ignoring this, I think it is wrong
*/
orb_phase = phi_ref;
/* Step 2: Compute Zref
* 2.1: Compute LN_hat from file. LN_hat = direction of orbital ang. mom.
*/
XLALH5FileQueryScalarAttributeValue(&ln_hat_x , filepointer, "LNhatx");
XLALH5FileQueryScalarAttributeValue(&ln_hat_y , filepointer, "LNhaty");
XLALH5FileQueryScalarAttributeValue(&ln_hat_z , filepointer, "LNhatz");
ln_hat_norm = sqrt(ln_hat_x * ln_hat_x + ln_hat_y * ln_hat_y + ln_hat_z * ln_hat_z);
ln_hat_x = ln_hat_x / ln_hat_norm;
ln_hat_y = ln_hat_y / ln_hat_norm;
ln_hat_z = ln_hat_z / ln_hat_norm;
/* 2.2: Compute n_hat from file.
* n_hat = direction from object 2 to object 1
*/
XLALH5FileQueryScalarAttributeValue(&n_hat_x , filepointer, "nhatx");
XLALH5FileQueryScalarAttributeValue(&n_hat_y , filepointer, "nhaty");
XLALH5FileQueryScalarAttributeValue(&n_hat_z , filepointer, "nhatz");
n_hat_norm = sqrt(n_hat_x * n_hat_x + n_hat_y * n_hat_y + n_hat_z * n_hat_z);
n_hat_x = n_hat_x / n_hat_norm;
n_hat_y = n_hat_y / n_hat_norm;
n_hat_z = n_hat_z / n_hat_norm;
/* 2.3: Compute Z in the lal wave frame */
corb_phase = cos(orb_phase);
sorb_phase = sin(orb_phase);
sinclination = sin(inclination);
cinclination = cos(inclination);
ln_cross_n_x = ln_hat_y * n_hat_z - ln_hat_z * n_hat_y;
ln_cross_n_y = ln_hat_z * n_hat_x - ln_hat_x * n_hat_z;
ln_cross_n_z = ln_hat_x * n_hat_y - ln_hat_y * n_hat_x;
z_wave_x = sinclination * (sorb_phase * n_hat_x + corb_phase * ln_cross_n_x);
z_wave_y = sinclination * (sorb_phase * n_hat_y + corb_phase * ln_cross_n_y);
z_wave_z = sinclination * (sorb_phase * n_hat_z + corb_phase * ln_cross_n_z);
z_wave_x += cinclination * ln_hat_x;
z_wave_y += cinclination * ln_hat_y;
z_wave_z += cinclination * ln_hat_z;
/* Step 3.1: Extract theta and psi from Z in the lal wave frame
* NOTE: Theta can only run between 0 and pi, so no problem with arccos here
*/
*theta = acos(z_wave_z);
/* Degenerate if Z_wave[2] == 1. In this case just choose psi randomly,
* the choice will be cancelled out by alpha correction (I hope!)
*/
if(fabs(z_wave_z - 1.0 ) < 0.000001)
{
*psi = 0.5;
}
else
{
/* psi can run between 0 and 2pi, but only one solution works for x and y */
/* Possible numerical issues if z_wave_x = sin(theta) */
if(fabs(z_wave_x / sin(*theta)) > 1.)
{
if(fabs(z_wave_x / sin(*theta)) < 1.00001)
{
if((z_wave_x * sin(*theta)) < 0.)
{
*psi = LAL_PI;
}
else
{
*psi = 0.;
}
}
}
else
{
*psi = acos(z_wave_x / sin(*theta));
}
y_val = sin(*psi) * sin(*theta);
/* If z_wave[1] is negative, flip psi so that sin(psi) goes negative
* while preserving cos(psi) */
if( z_wave_y < 0.)
{
*psi = 2 * LAL_PI - *psi;
y_val = sin(*psi) * sin(*theta);
}
if( fabs(y_val - z_wave_y) > 0.0001)
{
XLAL_ERROR(XLAL_EDOM, "Something's wrong in Ian's math. Tell him he's an idiot!");
}
}
/* 3.2: Compute the vectors theta_hat and psi_hat */
stheta = sin(*theta);
ctheta = cos(*theta);
spsi = sin(*psi);
cpsi = cos(*psi);
theta_hat_x = cpsi * ctheta;
theta_hat_y = spsi * ctheta;
theta_hat_z = - stheta;
psi_hat_x = -spsi;
psi_hat_y = cpsi;
psi_hat_z = 0.0;
/* Step 4: Compute sin(alpha) and cos(alpha) */
n_dot_theta = n_hat_x * theta_hat_x + n_hat_y * theta_hat_y + n_hat_z * theta_hat_z;
ln_cross_n_dot_theta = ln_cross_n_x * theta_hat_x + ln_cross_n_y * theta_hat_y + ln_cross_n_z * theta_hat_z;
n_dot_psi = n_hat_x * psi_hat_x + n_hat_y * psi_hat_y + n_hat_z * psi_hat_z;
ln_cross_n_dot_psi = ln_cross_n_x * psi_hat_x + ln_cross_n_y * psi_hat_y + ln_cross_n_z * psi_hat_z;
*salpha = corb_phase * n_dot_theta - sorb_phase * ln_cross_n_dot_theta;
*calpha = corb_phase * n_dot_psi - sorb_phase * ln_cross_n_dot_psi;
/* Step 5: Also useful to keep the source frame vectors as defined in
* equation 16 of Harald's document.
*/
/*
* x_source_hat[0] = corb_phase * n_hat_x - sorb_phase * ln_cross_n_x;
* x_source_hat[1] = corb_phase * n_hat_y - sorb_phase * ln_cross_n_y;
* x_source_hat[2] = corb_phase * n_hat_z - sorb_phase * ln_cross_n_z;
* y_source_hat[0] = sorb_phase * n_hat_x + corb_phase * ln_cross_n_x;
* y_source_hat[1] = sorb_phase * n_hat_y + corb_phase * ln_cross_n_y;
* y_source_hat[2] = sorb_phase * n_hat_z + corb_phase * ln_cross_n_z;
* z_source_hat[0] = ln_hat_x;
* z_source_hat[1] = ln_hat_y;
* z_source_hat[2] = ln_hat_z;
*/
return XLAL_SUCCESS;
#endif
}
/* Everything needs to be declared as unused in case HDF is not enabled. */
int XLALSimInspiralNRWaveformGetHplusHcross(
UNUSED REAL8TimeSeries **hplus, /**< Output h_+ vector */
UNUSED REAL8TimeSeries **hcross, /**< Output h_x vector */
UNUSED REAL8 phiRef, /**< orbital phase at reference pt. */
UNUSED REAL8 inclination, /**< inclination angle */
UNUSED REAL8 deltaT, /**< sampling interval (s) */
UNUSED REAL8 m1, /**< mass of companion 1 (kg) */
UNUSED REAL8 m2, /**< mass of companion 2 (kg) */
UNUSED REAL8 r, /**< distance of source (m) */
UNUSED REAL8 fStart, /**< start GW frequency (Hz) */
UNUSED REAL8 fRef, /**< reference GW frequency (Hz) */
UNUSED REAL8 s1x, /**< initial value of S1x */
UNUSED REAL8 s1y, /**< initial value of S1y */
UNUSED REAL8 s1z, /**< initial value of S1z */
UNUSED REAL8 s2x, /**< initial value of S2x */
UNUSED REAL8 s2y, /**< initial value of S2y */
UNUSED REAL8 s2z, /**< initial value of S2z */
UNUSED const char *NRDataFile, /**< Location of NR HDF file */
UNUSED LALValue* ModeArray /**< Container for the ell and m modes to generate. To generate all available modes pass NULL */
)
{
#ifndef LAL_HDF5_ENABLED
XLAL_ERROR(XLAL_EFAILED, "HDF5 support not enabled");
#else
/* Declarations */
UINT4 curr_idx, nr_file_format;
INT4 model, modem;
size_t array_length;
REAL8 nrEta;
REAL8 S1x, S1y, S1z, S2x, S2y, S2z;
REAL8 Mflower, time_start_M, time_start_s, time_end_M, time_end_s;
REAL8 est_start_time, curr_h_real, curr_h_imag;
REAL8 theta, psi, calpha, salpha;
REAL8 distance_scale_fac;
COMPLEX16 curr_ylm;
REAL8TimeSeries *hplus_corr;
REAL8TimeSeries *hcross_corr;
/* These keys follow a strict formulation and cannot be longer than 11
* characters */
char amp_key[20];
char phase_key[20];
gsl_vector *tmpVector=NULL;
LALH5File *file, *group;
LIGOTimeGPS tmpEpoch = LIGOTIMEGPSZERO;
REAL8Vector *curr_amp, *curr_phase;
/* Use solar masses for units. NR files will use
* solar masses as well, so easier for that conversion
*/
m1 = m1 / LAL_MSUN_SI;
m2 = m2 / LAL_MSUN_SI;
file = XLALH5FileOpen(NRDataFile, "r");
if (file == NULL)
{
XLAL_ERROR(XLAL_EIO, "NR SIMULATION DATA FILE %s NOT FOUND.\n", NRDataFile);
}
/* Sanity checks on physical parameters passed to waveform
* generator to guarantee consistency with NR data file.
*/
XLALH5FileQueryScalarAttributeValue(&nrEta, file, "eta");
if (fabs((m1 * m2) / pow((m1 + m2),2.0) - nrEta) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "MASSES (%e and %e) ARE INCONSISTENT WITH THE MASS RATIO OF THE NR SIMULATION (eta=%e).\n", m1, m2, nrEta);
}
/* Read spin metadata, L_hat, n_hat from HDF5 metadata and make sure
* the ChooseTDWaveform() input values are consistent with the data
* recorded in the metadata of the HDF5 file.
* PS: This assumes that the input spins are in the LAL frame!
*/
XLALH5FileQueryScalarAttributeValue(&nr_file_format, file, "Format");
if (nr_file_format < 2)
{
XLALPrintInfo("This NR file is format %d. Only formats 2 and above support the use of reference frequency. For formats < 2 the reference frequency always corresponds to the start of the waveform.", nr_file_format);
fRef = -1;
}
XLALSimInspiralNRWaveformGetSpinsFromHDF5FilePointer(&S1x, &S1y, &S1z,
&S2x, &S2y, &S2z,
fRef, m1+m2, file);
if (fabs(S1x - s1x) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN1X IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
if (fabs(S1y - s1y) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN1Y IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
if (fabs(S1z - s1z) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN1Z IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
if (fabs(S2x - s2x) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN2X IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
if (fabs(S2y - s2y) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN2Y IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
if (fabs(S2z - s2z) > 1E-3)
{
XLAL_ERROR(XLAL_EDOM, "SPIN2Z IS INCONSISTENT WITH THE NR SIMULATION.\n");
}
/* First estimate the length of time series that is needed.
* Demand that 22 mode that is present and use that to figure this out
*/
XLALH5FileQueryScalarAttributeValue(&Mflower, file, "f_lower_at_1MSUN");
/* Figure out start time of data */
group = XLALH5GroupOpen(file, "amp_l2_m2");
ReadHDF5RealVectorDataset(group, "X", &tmpVector);
time_start_M = (REAL8)(gsl_vector_get(tmpVector, 0));
time_end_M = (REAL8)(gsl_vector_get(tmpVector, tmpVector->size - 1));
gsl_vector_free(tmpVector);
time_start_s = time_start_M * (m1 + m2) * LAL_MTSUN_SI;
time_end_s = time_end_M * (m1 + m2) * LAL_MTSUN_SI;
/* We don't want to return the *entire* waveform if it will be much longer
* than the specified f_lower. Therefore guess waveform length using
* the SEOBNR_ROM function and add 10% for safety.
* FIXME: Is this correct for precessing waveforms?
*/
if (fStart < Mflower / (m1 + m2) )
{
XLAL_ERROR(XLAL_EDOM, "WAVEFORM IS NOT LONG ENOUGH TO REACH f_low. %e %e %e",
fStart, Mflower, Mflower / (m1 + m2));
}
XLALH5FileQueryScalarAttributeValue(&nr_file_format, file, "Format");
if (nr_file_format > 1)
{
if (XLALSimInspiralNRWaveformCheckFRef(file, fStart * (m1+m2)) > 0)
{
/* Can use Omega array to get start time */
est_start_time = XLALSimInspiralNRWaveformGetRefTimeFromRefFreq(file, fStart * (m1+m2)) * (m1 + m2) * LAL_MTSUN_SI;
}
else
{
/* This is the potential weird case where Omega-vs-time does not start
* at precisely the same time as flower_at_1MSUN. This gap should be
* small, so just use the full waveform here.
*/
est_start_time = time_start_s;
}
}
else
{
/* Fall back on SEOBNR chirp time estimate */
XLALSimIMRSEOBNRv4ROMTimeOfFrequency(&est_start_time, fStart, m1 * LAL_MSUN_SI, m2 * LAL_MSUN_SI, s1z, s2z);
est_start_time = (-est_start_time) * 1.1;
}
if (est_start_time > time_start_s)
{
/* Restrict start time of waveform */
time_start_s = est_start_time;
time_start_M = time_start_s / ((m1 + m2) * LAL_MTSUN_SI);
}
array_length = (UINT4)(ceil( (time_end_s - time_start_s) / deltaT));
/* Compute correct angles for hplus and hcross following LAL convention. */
theta = psi = calpha = salpha = 0.;
XLALSimInspiralNRWaveformGetRotationAnglesFromH5File(&theta, &psi, &calpha,
&salpha, file, inclination, phiRef, fRef*(m1+m2));
/* Create the return time series, use arbitrary epoch here. We set this
* properly later. */
XLALGPSAdd(&tmpEpoch, time_start_s);
*hplus = XLALCreateREAL8TimeSeries("H_PLUS", &tmpEpoch, 0.0, deltaT,
&lalStrainUnit, array_length );
*hcross = XLALCreateREAL8TimeSeries("H_CROSS", &tmpEpoch, 0.0, deltaT,
&lalStrainUnit, array_length );
hplus_corr = XLALCreateREAL8TimeSeries("H_PLUS", &tmpEpoch, 0.0, deltaT,
&lalStrainUnit, array_length );
hcross_corr = XLALCreateREAL8TimeSeries("H_CROSS", &tmpEpoch, 0.0, deltaT,
&lalStrainUnit, array_length );
for (curr_idx = 0; curr_idx < array_length; curr_idx++)
{
hplus_corr->data->data[curr_idx] = 0.0;
hcross_corr->data->data[curr_idx] = 0.0;
}
/* Create the distance scale factor */
distance_scale_fac = (m1 + m2) * LAL_MRSUN_SI / r;
/* Generate the waveform */
/* NOTE: We assume that for a given ell mode, all m modes are present */
INT4 NRLmax;
XLALH5FileQueryScalarAttributeValue(&NRLmax, file, "Lmax");
if ( ModeArray == NULL )
{/* Default behaviour: Generate all modes upto NRLmax */
ModeArray = XLALSimInspiralCreateModeArray();
for (int ell=2; ell<=NRLmax; ell++)
{
XLALSimInspiralModeArrayActivateAllModesAtL(ModeArray, ell);
}
}
/* else Use the ModeArray given */
for (model=2; model < (NRLmax + 1) ; model++)
{
for (modem=-model; modem < (model+1); modem++)
{
/* first check if (l,m) mode is 'activated' in the ModeArray */
/* if activated then generate the mode, else skip this mode. */
if (XLALSimInspiralModeArrayIsModeActive(ModeArray, model, modem) != 1)
{
XLAL_PRINT_INFO("SKIPPING model = %i modem = %i\n", model, modem);
continue;
}
XLAL_PRINT_INFO("generateing model = %i modem = %i\n", model, modem);
snprintf(amp_key, sizeof(amp_key), "amp_l%d_m%d", model, modem);
snprintf(phase_key, sizeof(phase_key), "phase_l%d_m%d", model, modem);
/* Check that both groups exist */
if (XLALH5FileCheckGroupExists(file, amp_key) == 0)
{
continue;
}
if (XLALH5FileCheckGroupExists(file, phase_key) == 0)
{
continue;
}
/* Get amplitude and phase from file */
XLALSimInspiralNRWaveformGetDataFromHDF5File(&curr_amp, file, (m1 + m2),
time_start_s, array_length, deltaT, amp_key);
XLALSimInspiralNRWaveformGetDataFromHDF5File(&curr_phase, file, (m1 + m2),
time_start_s, array_length, deltaT, phase_key);
curr_ylm = XLALSpinWeightedSphericalHarmonic(theta, psi, -2,
model, modem);
for (curr_idx = 0; curr_idx < array_length; curr_idx++)
{
curr_h_real = curr_amp->data[curr_idx]
* cos(curr_phase->data[curr_idx]) * distance_scale_fac;
curr_h_imag = curr_amp->data[curr_idx]
* sin(curr_phase->data[curr_idx]) * distance_scale_fac;
hplus_corr->data->data[curr_idx] = hplus_corr->data->data[curr_idx]
+ curr_h_real * creal(curr_ylm) - curr_h_imag * cimag(curr_ylm);
hcross_corr->data->data[curr_idx] = hcross_corr->data->data[curr_idx]
- curr_h_real * cimag(curr_ylm) - curr_h_imag * creal(curr_ylm);
}
XLALDestroyREAL8Vector(curr_amp);
XLALDestroyREAL8Vector(curr_phase);
}
}
/* Correct for the "alpha" angle as given in T1600045 to translate
* from the NR wave frame to LAL wave-frame
* Helper time series needed.
*/
for (curr_idx = 0; curr_idx < array_length; curr_idx++)
{
(*hplus)->data->data[curr_idx] =
(calpha*calpha - salpha*salpha) * hplus_corr->data->data[curr_idx]
- 2.0*calpha*salpha * hcross_corr->data->data[curr_idx];
(*hcross)->data->data[curr_idx] =
+ 2.0*calpha*salpha * hplus_corr->data->data[curr_idx]
+ (calpha*calpha - salpha*salpha) * hcross_corr->data->data[curr_idx];
}
XLALDestroyREAL8TimeSeries(hplus_corr);
XLALDestroyREAL8TimeSeries(hcross_corr);
XLALH5FileClose(file);
XLALDestroyValue(ModeArray);
return XLAL_SUCCESS;
#endif
}
/* Everything needs to be declared as unused in case HDF is not enabled. */
UNUSED static UINT4 XLALSimInspiralNRWaveformGetSpinsFromHDF5FilePointer(
UNUSED REAL8 *S1x, /**< [out] Dimensionless spin1x in LAL frame */
UNUSED REAL8 *S1y, /**< [out] Dimensionless spin1y in LAL frame */
UNUSED REAL8 *S1z, /**< [out] Dimensionless spin1z in LAL frame */
UNUSED REAL8 *S2x, /**< [out] Dimensionless spin2x in LAL frame */
UNUSED REAL8 *S2y, /**< [out] Dimensionless spin2y in LAL frame */
UNUSED REAL8 *S2z, /**< [out] Dimensionless spin2z in LAL frame */
UNUSED REAL8 fRef, /**< Reference frequency */
UNUSED REAL8 mTot, /**< Total mass */
UNUSED LALH5File* file /**< Pointer to HDF5 file */
)
{
#ifndef LAL_HDF5_ENABLED
XLAL_ERROR(XLAL_EFAILED, "HDF5 support not enabled");
#else
REAL8 nrSpin1x, nrSpin1y, nrSpin1z, nrSpin2x, nrSpin2y, nrSpin2z;
REAL8 ln_hat_x, ln_hat_y, ln_hat_z, n_hat_x, n_hat_y, n_hat_z, n_norm;
REAL8 pos1x, pos1y, pos1z, pos2x, pos2y, pos2z;
REAL8 ref_time;
INT8 nr_file_format;
/* We'll work by always using mTot = 1 */
fRef = fRef * mTot;
XLALH5FileQueryScalarAttributeValue(&nr_file_format, file, "Format");
if ((nr_file_format < 2) && (fRef > 0))
{
/* Supplying a fRef > 0 indicates that the user actually wants to use
* fRef. If this is not possible, because the file format is < 2, then
* the code will fail. */
XLAL_ERROR(XLAL_EINVAL, "This NR file is format 1. Only formats 2 and above support the use of reference frequency. For formats < 2 give the reference frequency as 0 or -1 to indicate that the start of the waveform should be used as the reference.");
}
/* Check if fRef is possible given inputs */
fRef = XLALSimInspiralNRWaveformCheckFRef(file, fRef);
if (fRef <= 0)
{
XLALH5FileQueryScalarAttributeValue(&nrSpin1x, file, "spin1x");
XLALH5FileQueryScalarAttributeValue(&nrSpin1y, file, "spin1y");
XLALH5FileQueryScalarAttributeValue(&nrSpin1z, file, "spin1z");
XLALH5FileQueryScalarAttributeValue(&nrSpin2x, file, "spin2x");
XLALH5FileQueryScalarAttributeValue(&nrSpin2y, file, "spin2y");
XLALH5FileQueryScalarAttributeValue(&nrSpin2z, file, "spin2z");
XLALH5FileQueryScalarAttributeValue(&ln_hat_x , file, "LNhatx");
XLALH5FileQueryScalarAttributeValue(&ln_hat_y , file, "LNhaty");
XLALH5FileQueryScalarAttributeValue(&ln_hat_z , file, "LNhatz");
XLALH5FileQueryScalarAttributeValue(&n_hat_x , file, "nhatx");
XLALH5FileQueryScalarAttributeValue(&n_hat_y , file, "nhaty");
XLALH5FileQueryScalarAttributeValue(&n_hat_z , file, "nhatz");
}
else
{
/* This will be real slow if done many times!
* One speed issue is we create the spline for *all* points, but only
* evaluate at a single point. */
/* First interpolate between time and freq to get a reference time */
ref_time = XLALSimInspiralNRWaveformGetRefTimeFromRefFreq(file, fRef);
/* Now use ref_time to get spins, LN and nhat */
nrSpin1x = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "spin1x-vs-time", ref_time);
nrSpin1y = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "spin1y-vs-time", ref_time);
nrSpin1z = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "spin1z-vs-time", ref_time);
nrSpin2x = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "spin2x-vs-time", ref_time);
nrSpin2y = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "spin2y-vs-time", ref_time);
nrSpin2z = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "spin2z-vs-time", ref_time);
ln_hat_x = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "LNhatx-vs-time", ref_time);
ln_hat_y = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "LNhaty-vs-time", ref_time);
ln_hat_z = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "LNhatz-vs-time", ref_time);
/* Would have been easier if we could store n_hat directly!! */
pos1x = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "position1x-vs-time", ref_time);
pos1y = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "position1y-vs-time", ref_time);
pos1z = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "position1z-vs-time", ref_time);
pos2x = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "position2x-vs-time", ref_time);
pos2y = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "position2y-vs-time", ref_time);
pos2z = XLALSimInspiralNRWaveformGetInterpValueFromGroupAtPoint
(file, "position2z-vs-time", ref_time);
n_hat_x = pos2x - pos1x;
n_hat_y = pos2y - pos1y;
n_hat_z = pos2z - pos1z;
n_norm = sqrt(n_hat_x*n_hat_x + n_hat_y*n_hat_y + n_hat_z*n_hat_z);
n_hat_x = n_hat_x / n_norm;
n_hat_y = n_hat_y / n_norm;
n_hat_z = n_hat_z / n_norm;
}
*S1x = nrSpin1x * n_hat_x + nrSpin1y * n_hat_y + nrSpin1z * n_hat_z;
*S1y = nrSpin1x * (-ln_hat_z * n_hat_y + ln_hat_y * n_hat_z)
+ nrSpin1y * (ln_hat_z * n_hat_x - ln_hat_x * n_hat_z)
+ nrSpin1z * (-ln_hat_y * n_hat_x + ln_hat_x * n_hat_y) ;
*S1z = nrSpin1x * ln_hat_x + nrSpin1y * ln_hat_y + nrSpin1z * ln_hat_z;
*S2x = nrSpin2x * n_hat_x + nrSpin2y * n_hat_y + nrSpin2z * n_hat_z;
*S2y = nrSpin2x * (-ln_hat_z * n_hat_y + ln_hat_y * n_hat_z)
+ nrSpin2y * (ln_hat_z * n_hat_x - ln_hat_x * n_hat_z)
+ nrSpin2z * (-ln_hat_y * n_hat_x + ln_hat_x * n_hat_y);
*S2z = nrSpin2x * ln_hat_x + nrSpin2y * ln_hat_y + nrSpin2z * ln_hat_z;
return XLAL_SUCCESS;
#endif
}