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Gyoto::Astrobj::Disk3D_BB Class Reference

Geometrically thick optically thin disk read from a set of FITS files. More...

#include <GyotoDisk3D_BB.h>

Inheritance diagram for Gyoto::Astrobj::Disk3D_BB:
Gyoto::Astrobj::Disk3D Gyoto::Astrobj::Generic Gyoto::SmartPointee

Public Member Functions

 Disk3D_BB ()
 Standard constructor.
 
 Disk3D_BB (const Disk3D_BB &)
 Copy constructor.
 
virtual Disk3D_BBclone () const
 Cloner.
 
virtual ~Disk3D_BB ()
 Destructor.
 
void setMetric (SmartPointer< Metric::Generic > gg)
 Set the Metric Generic::gg_.
 
virtual int setParameter (std::string name, std::string content, std::string unit)
 Set parameter by name. More...
 
double emission1date (double nu_em, double dsem, double c_ph[8], double c_obj[8]) const
 Compute emission at one grid date.
 
virtual double emission (double nu_em, double dsem, double c_ph[8], double c_obj[8]) const
 Interpolate emission between grid dates.
 
double transmission1date (double nu_em, double dsem, double c_ph[8], double c_obj[8]) const
 Compute transmission at one grid date.
 
double transmission (double nu_em, double dsem, double c_obj[8]) const
 Interpolate transmission between grid dates.
 
void getVelocity (double const pos[4], double vel[4])
 Get fluid 4-velocity at point. More...
 
double const * getVelocity () const
 Get Disk3D::velocity_.
 
virtual void fillElement (FactoryMessenger *fmp) const
 Fill XML section. More...
 
virtual void fitsRead (std::string filename_)
 Read parameters and arrays from FITS file.
 
virtual void fitsWrite (std::string filename_)
 Write parameters and arrays to FITS file.
 
void setEmissquant (double *pattern)
 Set Disk3D::emissquant_. More...
 
void setVelocity (double *pattern)
 Set Disk3D::velocity__. More...
 
virtual void copyEmissquant (double const *const pattern=NULL, size_t const naxes[4]=NULL)
 Set Disk3D::emissquant_. More...
 
virtual double const * getEmissquant () const
 Get Disk3D::emissquant_.
 
virtual void getEmissquantNaxes (size_t naxes[4]) const
 Get { Disk3D::nnu_, Disk3D::nphi_, Disk3D::nz_, Disk3D::nr_ }.
 
virtual void copyVelocity (double const *const pattern=NULL, size_t const naxes[3]=NULL)
 Set Disk3D::velocity_. More...
 
virtual void repeatPhi (size_t n)
 Set Disk3D::repeat_phi_.
 
virtual size_t repeatPhi () const
 Get Disk3D::repeat_phi_.
 
virtual void nu0 (double freq)
 Set Disk3D::nu0_.
 
virtual double nu0 () const
 Get Disk3D::nu0_.
 
virtual void dnu (double dfreq)
 Set Disk3D::dnu_.
 
virtual double dnu () const
 Get Disk3D::dnu_.
 
void rin (double rrin)
 Set Disk3D::rin_.
 
double rin () const
 Get Disk3D::rin_.
 
void rout (double rout)
 Set Disk3D::rout_.
 
double rout () const
 Get Disk3D::rout_.
 
void zmin (double zmin)
 Set Disk3D::zmin_.
 
double zmin () const
 Get Disk3D::zmin_.
 
void zmax (double zmax)
 Set Disk3D::zmax_.
 
double zmax () const
 Get Disk3D::zmax_.
 
void phimin (double phimin)
 Set Disk3D::phimin_.
 
double phimin () const
 Get Disk3D::phimin_.
 
void phimax (double phimax)
 Set Disk3D::phimax_.
 
double phimax () const
 Get Disk3D::phimax_.
 
int Impact (Photon *ph, size_t index, Astrobj::Properties *data)
 Does a photon at these coordinates impact the object? More...
 
virtual void setParameters (FactoryMessenger *fmp)
 Main loop in Subcontractor_t function. More...
 
virtual SmartPointer
< Metric::Generic
getMetric () const
 Get the Metric Generic::gg_.
 
virtual double getRmax ()
 Get maximal distance from center of coordinate system. More...
 
virtual double getRmax (std::string unit)
 Get rmax_ is specified unit. More...
 
const std::string getKind () const
 Get the kind of the Astrobj (e.g. "Star")
 
virtual void setRmax (double val)
 Set maximal distance from center of coordinate system. More...
 
virtual void setRmax (double val, std::string unit)
 Set maximal distance from center of coordinate system. More...
 
virtual void unsetRmax ()
 Set rmax_set_ to 0. More...
 
void setFlag_radtransf (int flag)
 Set whether the object is optically thin. More...
 
int getFlag_radtransf () const
 Query whether object is optically thin. More...
 
virtual Quantity_t getDefaultQuantities ()
 Which quantities to compute if know was requested. More...
 
virtual void processHitQuantities (Photon *ph, double *coord_ph_hit, double *coord_obj_hit, double dt, Astrobj::Properties *data) const
 Fills Astrobj::Properties. More...
 
virtual void emission (double Inu[], double nu_em[], size_t nbnu, double dsem, double coord_ph[8], double coord_obj[8]=NULL) const
 Specific intensity Iν for several values of νem More...
 
virtual double integrateEmission (double nu1, double nu2, double dsem, double c_ph[8], double c_obj[8]=NULL) const
 ν1ν2 Iν dν (or jν) More...
 
virtual void integrateEmission (double *I, double const *boundaries, size_t const *chaninds, size_t nbnu, double dsem, double *cph, double *co) const
 ν1ν2 Iν dν (or jν) More...
 

Protected Types

typedef Gyoto::SmartPointer
< Gyoto::SmartPointee
Subcontractor_t (Gyoto::FactoryMessenger *)
 A subcontractor builds an object upon order from the Factory. More...
 

Protected Member Functions

void copyQuantities (int iq)
 Set underlying Disk3D pointers to a specific date slice. More...
 
void getIndices (size_t i[4], double const co[4], double nu=0.) const
 Get emissquant_ cell corresponding to position co[4].
 
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.
 
int getRefCount ()
 Get the current number of references.
 

Protected Attributes

SmartPointer< Spectrum::BlackBodyspectrumBB_
 emission law More...
 
SmartPointer
< Gyoto::Metric::Generic
gg_
 The Metric in this end of the Universe.
 
double rmax_
 Maximum distance to the center of the coordinate system [geometrical units]. More...
 
int rmax_set_
 Never recompute rmax: it was externally set. More...
 
const std::string kind_
 Kind of object (e.g. "Star"...) More...
 
int flag_radtransf_
 1 if radiative transfer inside Astrobj, else 0
 

Private Attributes

char * dirname_
 FITS files directory.
 
double tinit_
 Time of the first FITS file.
 
double dt_
 Time increment between two FITS (assumed constant)
 
int nb_times_
 Number of times.
 
double ** temperature_array_
 
double ** velocity_array_
 velocity(r, z, phi) More...
 

Friends

class Gyoto::SmartPointer< Gyoto::Astrobj::Disk3D_BB >
 

Detailed Description

Geometrically thick optically thin disk read from a set of FITS files.

This class describes a PatternDiskBB that evolves dynamically. It is described by a set of FITS files for different times. Its emission is blackbody.

The disk is assumed to be described by a regular, constant in time, grid.

The metric must be Kerr in BL coordinates.

Member Typedef Documentation

typedef Gyoto::SmartPointer<Gyoto::SmartPointee> Gyoto::SmartPointee::Subcontractor_t(Gyoto::FactoryMessenger *)
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().

Member Function Documentation

virtual void Gyoto::Astrobj::Disk3D::copyEmissquant ( double const *const  pattern = NULL,
size_t const  naxes[4] = NULL 
)
virtualinherited

Set Disk3D::emissquant_.

Disk3D::emissquant_ is freed if not NULL, reallocated, and pattern is copied into emission_.

If Disk3D::velocity_ or has been set previously with mismatching sizes, it is deallocated too.

Finally, Disk3D::nnu_, Disk3D::nphi_, Disk3D::nz_ and Disk3D::nr_ are set according to naxes.

Parameters
patternArray to copy as emission_. May be NULL in which case emission_ is simply deallocated and set to NULL.
naxes{ nnu_, nphi_, nz_, nr_ }.
void Gyoto::Astrobj::Disk3D_BB::copyQuantities ( int  iq)
protected

Set underlying Disk3D pointers to a specific date slice.

Parameters
iqIndex of the date slice.
virtual void Gyoto::Astrobj::Disk3D::copyVelocity ( double const *const  pattern = NULL,
size_t const  naxes[3] = NULL 
)
virtualinherited

Set Disk3D::velocity_.

Disk3D::velocity_ is first freed if not NULL and set to NULL.

If pattern is not NULL, Disk3D::emissquant_ must have been set previously with matching dimensions. Disk3D::velocity_ is then reallocated, and pattern is copied into velocity_.

Parameters
patternArray to copy as velocity_. May be NULL in which case velocity_ is simply deallocated and set to NULL.
naxes{ nphi_, nz_, nr_ }.
virtual void Gyoto::Astrobj::Generic::emission ( double  Inu[],
double  nu_em[],
size_t  nbnu,
double  dsem,
double  coord_ph[8],
double  coord_obj[8] = NULL 
) const
virtualinherited

Specific intensity Iν for several values of νem

Called by the default implementation for processHitQuantities().

emission() computes the intensity Iν emitted by the small volume of length dsem. It should take self-absorption along dsem into account.

Same as emission(double nu_em, double dsem, double coord_ph[8], double coord_obj[8]=NULL) const looping on several values of nu_em.

Parameters
Inu[nbnu]Output (must be set to a previously allocated array of doubles)
nu_em[nbnu]Frequencies at emission
nbnuSize of Inu[] and nu_em[]
dsemLength over which to integrate inside the object
coord_phPhoton coordinate
coord_objEmitter coordinate at current photon position
Returns
Iν or dIν [W m-2 sr-2]

Reimplemented in Gyoto::Astrobj::PolishDoughnut.

virtual void Gyoto::Astrobj::Disk3D_BB::fillElement ( FactoryMessenger fmp) const
virtual

Fill XML section.

Astrobj implementations should impement fillElement to save their parameters to XML and call the generic implementation to save generic parts such as Flag_radtrans: Generic::fillElement(fmp).

Reimplemented from Gyoto::Astrobj::Disk3D.

virtual Quantity_t Gyoto::Astrobj::Generic::getDefaultQuantities ( )
virtualinherited

Which quantities to compute if know was requested.

Return a Gyoto::Quantity_t suitable as input to Gyoto::Scenery::setRequestedQuantities() to set de default quantities to compute for this object. The default of these defaults GYOTO_QUANTITY_INTENSITY.

Reimplemented in Gyoto::Astrobj::PageThorneDisk.

int Gyoto::Astrobj::Generic::getFlag_radtransf ( ) const
inherited

Query whether object is optically thin.

See setFlag_radtransf(int flag).

virtual double Gyoto::Astrobj::Generic::getRmax ( )
virtualinherited

Get maximal distance from center of coordinate system.

Get maximal distance from center of coordinate system at which a Photon may hit the object.

Child classes may use the rmax_ member to cache this value.

It can also be set using setRmax(). If setRmax has been used to set rmax_, getRmax() must not recompute it.

Returns
rmax_ in geometrical units

Reimplemented in Gyoto::Astrobj::Star, and Gyoto::Astrobj::Torus.

virtual double Gyoto::Astrobj::Generic::getRmax ( std::string  unit)
virtualinherited

Get rmax_ is specified unit.

Call getRmax() and convert result to unit.

Parameters
unitstring
Returns
double rmax converted to unit
void Gyoto::Astrobj::Disk3D_BB::getVelocity ( double const  pos[4],
double  vel[4] 
)
virtual

Get fluid 4-velocity at point.

Fill vel with the 4-vector velocity of the fluid at 4-position pos.

Parameters
[in]pos4-position at which to compute velocity;
[out]vel4-velocity at pos.

Reimplemented from Gyoto::Astrobj::Disk3D.

int Gyoto::Astrobj::Disk3D::Impact ( Photon ph,
size_t  index,
Astrobj::Properties data 
)
virtualinherited

Does a photon at these coordinates impact the object?

Impact() checks whether a Photon impacts the object between two integration steps of the photon's trajectory (those two steps are photon->getCoord(index, coord1) and photon->getCoord(index+1, coord2)). Impact returns 1 if the photon impacts the object between these two steps, else 0. In many cases of geometrically thick obects, the implementation Astrobj::Standard::Impact() will be fine.

Impact will call Generic::processHitQuantities() (which is virtual and may be re-implemented) to compute observable properties on demand: if the data pointer is non-NULL, the object will look in it for pointers to properties which apply to its kind. If a pointer to a property known to this object is present, then the property is computed and store at the pointed-to adress. For instance, all objects know the "intensity" property. If data->intensity != NULL, the instensity is computed and stored in *data->intensity.

If data is non-NULL and only in this case, processHitQuantities() will also call ph->transmit() to update the transmissions of the Photon (see Photon::transmit(size_t, double)). This must not be done if data is NULL (see Astrobj::Complex::Impact() for an explanation).

Parameters
phGyoto::Photon aimed at the object;
indexIndex of the last photon step;
dataPointer to a structure to hold the observables at impact.
Returns
1 if impact, 0 if not.

Implements Gyoto::Astrobj::Generic.

virtual double Gyoto::Astrobj::Generic::integrateEmission ( double  nu1,
double  nu2,
double  dsem,
double  c_ph[8],
double  c_obj[8] = NULL 
) const
virtualinherited

ν1ν2 Iν dν (or jν)

Compute the integral of emission() from ν1 to ν2. The default implementation is a numerical integrator which works well enough and is reasonably fast if emission() is a smooth function (i.e. no emission or absorption lines). If possible, it is wise to implement an analytical solution. It is used by processHitQuantities to compute the "BinSpectrum" quantity which is the most physical: it is the only quantity that can be actually measured directly by a real-life instrument.

Reimplemented in Gyoto::Astrobj::UniformSphere, and Gyoto::Astrobj::Torus.

virtual void Gyoto::Astrobj::Generic::integrateEmission ( double *  I,
double const *  boundaries,
size_t const *  chaninds,
size_t  nbnu,
double  dsem,
double *  cph,
double *  co 
) const
virtualinherited

ν1ν2 Iν dν (or jν)

Like double integrateEmission(double nu1, double nu2, double dsem, double c_ph[8], double c_obj[8]) const for each Spectrometer channel.

virtual void Gyoto::Astrobj::Generic::processHitQuantities ( Photon ph,
double *  coord_ph_hit,
double *  coord_obj_hit,
double  dt,
Astrobj::Properties data 
) const
virtualinherited

Fills Astrobj::Properties.

processHitQuantities fills the requested data in Impact. To use it, you need to call it in the Impact() method for your object in case of hit. It will fill Redshift, Intensity, Spectrum, BinSpectrum and update the Photon's transmission by calling Photon::transmit(), only if data==NULL.

You can overload it for your Astrobj. The generic implementation calls emission(), integrateEmission() and transmission() below.

Reimplemented in Gyoto::Astrobj::PageThorneDisk.

void Gyoto::Astrobj::Disk3D::setEmissquant ( double *  pattern)
inherited

Set Disk3D::emissquant_.

The pointer is copied directly, not the array content.

This is a low-level function. Beware that:

  • previously allocated array will not be freed automatically;
  • array attached when the destructor is called will be freed.
void Gyoto::Astrobj::Generic::setFlag_radtransf ( int  flag)
inherited

Set whether the object is optically thin.

Set flag indicating that radiative transfer should be integrated, i.e. the object is to be considered optically thin.

Parameters
flag,:1 if optically thin, 0 if optically thick.
virtual int Gyoto::Astrobj::Disk3D_BB::setParameter ( std::string  name,
std::string  content,
std::string  unit 
)
virtual

Set parameter by name.

Assume MyKind is a subclass of Astrobj::Generic which has two members (a string StringMember and a double DoubleMember):

* int MyKind::setParameter(std::string name,
* std::string content,
* std::string unit) {
* if (name=="StringMember") setStringMember(content);
* else if (name=="DoubleMember") setDoubleMember(atof(content.c_str()),
* unit);
* else return Generic::setParameter(name, content, unit);
* return 0;
* }
*

If MyKind is not a direct subclass of Generic but is a subclass of e.g. Standard, UniformSphere of ThinDisk, it should call the corresponding setParameter() implementation instead of Generic::setParameter().

Parameters
nameXML name of the parameter
contentstring representation of the value
unitstring representation of the unit
Returns
0 if this parameter is known, 1 if it is not.

Reimplemented from Gyoto::Astrobj::Disk3D.

virtual void Gyoto::Astrobj::Disk3D::setParameters ( FactoryMessenger fmp)
virtualinherited

Main loop in Subcontractor_t function.

The Subcontractor_t function for each Astrobj kind should look somewhat like this (templated as Gyoto::Astrobj::Subcontractor<MyKind>):

* SmartPointer<Astrobj::Generic>
* Gyoto::Astrobj::MyKind::Subcontractor(FactoryMessenger* fmp) {
* SmartPointer<MyKind> ao = new MyKind();
* ao -> setParameters(fmp);
* return ao;
* }
*

Each object kind should implement setParameter(string name, string content, string unit) to interpret the individual XML elements. setParameters() can be overloaded in case the specific Astrobj class needs low level access to the FactoryMessenger. See UniformSphere::setParameters().

Reimplemented from Gyoto::Astrobj::Generic.

virtual void Gyoto::Astrobj::Generic::setRmax ( double  val)
virtualinherited

Set maximal distance from center of coordinate system.

Set maximal distance from center of coordinate system at which a Photon may hit the object.

Side effect: set rmax_set_ to 1.

Parameters
valnew rmax_ in geometrical units.
virtual void Gyoto::Astrobj::Generic::setRmax ( double  val,
std::string  unit 
)
virtualinherited

Set maximal distance from center of coordinate system.

Call Generic::setRmax(double val) after converting val from unit to geometrical units.

Parameters
valrmax_ expressed in unit "unit";
unitstring...
void Gyoto::Astrobj::Disk3D::setVelocity ( double *  pattern)
inherited

Set Disk3D::velocity__.

The pointer is copied directly, not the array content.

This is a low-level function. Beware that:

  • previously allocated array will not be freed automatically;
  • array attached when the destructor is called will be freed.
virtual void Gyoto::Astrobj::Generic::unsetRmax ( )
virtualinherited

Set rmax_set_ to 0.

getRmax() will then be free to recompute rmax_. Astrobjs which cache rmax_ may need to update it when unsetRmax() is called.

Reimplemented in Gyoto::Astrobj::Star.

Member Data Documentation

const std::string Gyoto::Astrobj::Generic::kind_
protectedinherited

Kind of object (e.g. "Star"...)

The kind should match the name of the class, e.g. "Star" for a Gyoto::Star.

double Gyoto::Astrobj::Generic::rmax_
protectedinherited

Maximum distance to the center of the coordinate system [geometrical units].

Maximum distance from the center of the coordinate system at which a photon may hit the object. Child classes may choose to update rmax at all time or to use it to cache the value, for instance when getRmax() is called. External classes (Photons in particular) must use getRmax() to access this information.

rmax_set_==1 means that rmax_ was set using setRmax() or the constructor. In this case, getRmax() must always return this value, not recompute it.

rmax_ is in geometrical units.

int Gyoto::Astrobj::Generic::rmax_set_
protectedinherited

Never recompute rmax: it was externally set.

rmax_set_==1 means that rmax_ was set using setRmax() or the constructor. In this case, getRmax() must always return this value, not recompute it.

Use unsetRmax() to reset rmax_set_ to 0.

SmartPointer<Spectrum::BlackBody> Gyoto::Astrobj::Disk3D_BB::spectrumBB_
protected

emission law

disk black body

double** Gyoto::Astrobj::Disk3D_BB::temperature_array_
private

An array of arrays of dimensionality double[nr_][nz_][nphi_][nnu_]. In FITS format, the first dimension is nu, the second phi, the third z, the last r. It contains temperature.

double** Gyoto::Astrobj::Disk3D_BB::velocity_array_
private

velocity(r, z, phi)

An array of arrays of dimensionality double[nr_][nz_][nphi_][3]. In FITS format, the second dimension is phi, and the third r. The first plane in the first FITS dimention is dphi/dt, the second dz/dt, the third dr/dt.


The documentation for this class was generated from the following file: