Gyoto
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Numerical metric around a rotating star in 3+1 formalism. More...
#include <GyotoRotStar3_1.h>
Public Member Functions | |
RotStar3_1 (const char *lorene_res, const int integ_kind) | |
Constructor. | |
virtual | ~RotStar3_1 () |
Destructor. | |
virtual RotStar3_1 * | clone () const |
Cloner (uses RotStar3_1(file, integ_kind)) | |
char const *const | getFileName () const |
int | getIntegKind () const |
int | myrk4 (const double coord[6], double h, double res[6]) const |
int | myrk4_adaptive (Gyoto::Worldline *line, const double coord[8], double lastnorm, double normref, double coordnew[8], double h0, double &h1) const |
int | myrk4_adaptive (const double coor[6], double lastnorm, double normref, double coornew[6], double cst[2], double &tdot_used, double h0, double &h1, double &hused) const |
int | diff (const double coord[8], double res[8]) const |
int | diff (const double y[6], double res[6], int) const |
void | Normalize4v (const double coordin[8], double coordout[8], const double cst[2], double &tdot_used) const |
double | gmunu (const double *x, int mu, int nu) const |
Display. | |
double | christoffel (const double coord[8], const int alpha, const int mu, const int nu) const |
double | ScalarProd (const double pos[4], const double u1[4], const double u2[4]) const |
Scalar product. | |
virtual void | fillElement (FactoryMessenger *fmp) |
called from Factory | |
const std::string | getKind () const |
void | setKind (const std::string) |
int | getRefCount () |
Get the current number of references. | |
void | setMass (const double) |
Set mass used in unitLength() | |
void | setMass (const double, std::string unit) |
Set mass used in unitLength() | |
int | getCoordKind () const |
Get coordinate kind. | |
void | setCoordKind (int coordkind) |
Set coordinate kind. | |
double | getMass () const |
Get mass used in unitLength() | |
double | unitLength () const |
M * G / c^2, M is in kg, unitLength in meters. | |
virtual void | cartesianVelocity (double const coord[8], double vel[3]) |
Compute xprime, yprime and zprime from 8-coordinates. | |
virtual double | SysPrimeToTdot (const double coord[4], const double v[3]) const |
Compute tdot as a function of dr/dt, dtheta/dt and dphi/dt. Everything is in geometrical units. | |
virtual void | circularVelocity (double const pos[4], double vel[4], double dir=1.) const |
Yield circular valocity at a given position (projected on equatorial plane. | |
virtual void | nullifyCoord (double coord[8]) const |
Set tdot (coord[4]) such that coord is light-like. Everything is in geometrical units. | |
virtual void | nullifyCoord (double coord[8], double &tdot2) const |
Set tdot (coord[4]) such that coord is light-like and return other possible tdot. | |
virtual double | Norm3D (double *pos) const |
not clear | |
void | processGenericParameters (Gyoto::FactoryMessenger *fmp) |
virtual int | myrk4 (Worldline *line, const double coord[8], double h, double res[8]) const |
virtual int | isStopCondition (double const *const coord) const |
virtual void | setParticleProperties (Gyoto::Worldline *line, const double *coord) const |
Static Public Member Functions | |
static void | Init () |
Static Public Attributes | |
static Metric::Subcontractor_t | Subcontractor |
Protected Types | |
typedef Gyoto::SmartPointer < Gyoto::SmartPointee > | Subcontractor_t (Gyoto::FactoryMessenger *) |
A subcontractor builds an object upon order from the Factory. |
Protected Member Functions | |
void | incRefCount () |
Increment the reference counter. Warning: Don't mess with the counter. | |
int | decRefCount () |
Decrement the reference counter and return current value. Warning: Don't mess with the counter. |
Private Attributes | |
char * | filename_ |
Star_rot * | star_ |
int | integ_kind_ |
Friends | |
class | Gyoto::SmartPointer< Gyoto::Metric::RotStar3_1 > |
Numerical metric around a rotating star in 3+1 formalism.
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inherited |
A subcontractor builds an object upon order from the Factory.
Various classes need to provide a subcontractor to be able to instanciate themselves upon order from the Factory. A subcontractor is a function (often a static member function) which accepts a pointer to a FactoryMessenger as unique parameter, communicates with the Factory using this messenger to read an XML description of the object to build, and returns this objet. SmartPointee::Subcontractor_t* is just generic enough a typedef to cast to and from other subcontractor types: Astrobj::Subcontractor_t, Metric::Subcontractor_t, Spectrum::Subcontractor_t. A subcontractor needs to be registered using the relevant Register() function: Astrobj::Register(), Metric::Register(), Spectrum::Register().
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virtual |
Value of Christoffel symbol $^{}_{}$ at point $(x_{1},x_{2},x_{3})$
Implements Gyoto::Metric::Generic.
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virtualinherited |
Yield circular valocity at a given position (projected on equatorial plane.
pos | input: position, |
vel | output: velocity, |
dir | 1 for corotating, -1 for counterrotating. |
Reimplemented in Gyoto::Metric::KerrBL, and Gyoto::Metric::KerrKS.
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virtual |
F function such as dy/dtau=F(y,cst)
Reimplemented from Gyoto::Metric::Generic.
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virtual |
Display.
x[4] | 4-position at which to compute the coefficient; |
0<=mu<=3 | 1st index of coefficient; |
0<=nu<=3 | 2nd index of coefficient; |
sys | coordinate systemp in which x is expressed (see GyotoMetric.h) |
Implements Gyoto::Metric::Generic.
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virtualinherited |
The integrating loop will ask this the Metric through this method whether or not it is happy to conitnue the integration. Typically, the Metric should answer 0 when everything is fine, 1 when too close to the event horizon, inside the BH...
coord[8] | coordinates to check. |
Reimplemented in Gyoto::Metric::KerrKS.
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virtualinherited |
Set tdot (coord[4]) such that coord is light-like. Everything is in geometrical units.
Set coord[4] so that the 4-velocity coord[4:7] is lightlike, i.e. of norm 0. There may be up to two solutions. coord[4] is set to the hightest. The lowest can be retrieved in tdot2. Everything is expressed in geometrical units.
coord[4] | 8-position, coord[4] will be set according to the other elements; |
Reimplemented in Gyoto::Metric::KerrBL, and Gyoto::Metric::KerrKS.
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virtualinherited |
Set tdot (coord[4]) such that coord is light-like and return other possible tdot.
Set coord[4] so that the 4-velocity coord[4:7] is lightlike, i.e. of norm 0. There may be up to two solutions. coord[4] is set to the hightest. The lowest can be retrieved in tdot2. Everything is expressed in geometrical units.
coord[4] | 8-position, coord[4] will be set according to the other elements; |
tdot2 | will be set to the smallest solution |
Reimplemented in Gyoto::Metric::KerrBL, and Gyoto::Metric::KerrKS.
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virtual |
Scalar product.
Compute the scalarproduct of the two quadrivectors u1 and u2 in this Metric, at point pos expressed in coordinate system sys.
pos[4] | 4-position; |
u1[4] | 1st quadrivector; |
u2[4] | 2nd quadrivector; |
Reimplemented from Gyoto::Metric::Generic.
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virtualinherited |
Set Metric-specific constants of motion. Used e.g. in KerrBL.
Reimplemented in Gyoto::Metric::KerrBL, and Gyoto::Metric::KerrKS.
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virtualinherited |
Compute tdot as a function of dr/dt, dtheta/dt and dphi/dt. Everything is in geometrical units.
coord[4] | 4-position (geometrical units); |
v[3] | 3-velocity dx1/dx0, dx2/dx0, dx3/dx0; |
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inherited |
M * G / c^2, M is in kg, unitLength in meters.
Metrics implementations are free to express lengths and distances in whatever unit they see fit (presumably most often geometrical units). This function returns this unit in SI (meters).