LALSimulation  5.4.0.1-fe68b98
LALSimIMRSEOBNRv4ROM_NSBHAmplitudeCorrection.c File Reference

Prototypes

REAL8 TanhWindow (const REAL8 f, const int sign, const REAL8 f0, const REAL8 sigma)
 Tanh window function w^{+/-}_{f0,sigma}(f) = 0.5 * (1 +/- tanh(4*(f-f0)/sigma)) Auxiliary function used by SEOBNRv4_ROM_NRTidalv2_NSBH. More...
 
REAL8 CalcRDFrequency (REAL8 MF, REAL8 chiF, REAL8 Mtot)
 Returns ringdown frequency in units of the total mass using fits from gr-qc/0512160/. More...
 
SEOBNRv4_ROM_NRTidalv2_NSBH

C code for SEOBNRv4_ROM_NRTidalv2_NSBH model. A technical note deescribing the model can be found at https://dcc.ligo.org/LIGO-T1900723.

Author
Andrew Matas

SEOBNRv4_ROM_NRTidalv2_NSBH is a frequency domain model that applies amplitude corrections due to tidal disruption to the SEOBNRv4ROM model. It is based on the SEOBNRv4_ROM_NRTidalv2.

Note
Parameter ranges:
  • 1 <= q = m1/m2 <= 100
  • m2 <= 3 Msun
  • lambda1 = 0
  • 0 <= lambda2 <= 5000 mi = mass of object i, lambdai = tidal parameter of object i (i={1,2}). i=1 is the black hole, i=2 is the neutron star. The model was compared with NR simulations with BH spin magnitudes up to 0.9.
A warning is issued when
  • chi2 is not 0 (model was fit to NR simulations with chi2=0, but checked against existing simulations with chi2=-0.2)
  • m1 < 1 Msun

chi2 = neutron star spin

Review status:
SEOBNRv4_ROM_NRTidalv2_NSBH review by Frank Ohme, Tim Dietrich, Shrobana Ghosh, Andrew Matas, Jonathan Thompson, Edward Fauchon-Jones. The review concluded on 3 February 2020. The review documentation, resources, and final git hash can be found at https://git.ligo.org/waveforms/reviews/nsbh-models/wikis/home.
int XLALSEOBNRv4ROMNSBHAmplitudeCorrectionFrequencySeries (const REAL8Sequence *amp_tidal, const REAL8Sequence *fHz, REAL8 m1_SI, REAL8 m2_SI, REAL8 chi1, REAL8 lambda2)
 Compute amplitude correction to SEOBNRv4_ROM_NRTidalv2 in LAL format at specified frequencies for the SEOBNRv4_ROM_NRTidalv2_NSBH model, incorporating tidal disruption effects. More...
 

Go to the source code of this file.

Function Documentation

◆ TanhWindow()

REAL8 TanhWindow ( const REAL8  f,
const int  sign,
const REAL8  f0,
const REAL8  sigma 
)

Tanh window function w^{+/-}_{f0,sigma}(f) = 0.5 * (1 +/- tanh(4*(f-f0)/sigma)) Auxiliary function used by SEOBNRv4_ROM_NRTidalv2_NSBH.

Parameters
ffrequency at which to evaluate window function
signsign (+1 or -1), used to determine whether window is "on" or "off"
f0central frequency of window function
sigmawidth of window function

Definition at line 43 of file LALSimIMRSEOBNRv4ROM_NSBHAmplitudeCorrection.c.

◆ CalcRDFrequency()

REAL8 CalcRDFrequency ( REAL8  MF,
REAL8  chiF,
REAL8  Mtot 
)

Returns ringdown frequency in units of the total mass using fits from gr-qc/0512160/.

Auxiliary function used by SEOBNRv4_ROM_NRTidalv2_NSBH.

Parameters
MFFinal mass (in solar masses)
chiFFinal spin (dimensionless
MtotIniital toal mass (in solar masses

Definition at line 61 of file LALSimIMRSEOBNRv4ROM_NSBHAmplitudeCorrection.c.