particle_halo2.h File Reference

Defines classes for representing gravitational lensing by collections of simulation particles using tree codes. More...

#include <thread>
#include <mutex>
#include "geometry.h"
#include "quadTree.h"
#include "simpleTree.h"
#include "particle_types.h"
#include "utilities_slsim.h"
#include "lens_halos.h"
#include "oTreeNB.h"
#include "gadget.hh"

Include dependency graph for particle_halo2.h:

Go to the source code of this file.

Classes
class	LensHaloParticles< DType >
	A class that represents the lensing by a collection of simulation particles by tree code. More...
class	LensHaloParticlesM< DType >
	LensHaloParticles but where the "particles" have different masses. More...
class	LensHaloParticlesO< DType >
	LensHaloParticles only with a hole cut out of it. More...
class	LensHaloParticlesP< DType >
	LensHaloParticles only with pseudo-periodic boundary conditions. More...
class	LensHaloParticlesMO< DType >
	LensHaloParticlesM only with a hole cut out of it. More...
class	LensHaloH< HType >
	LensHalo for collecting LensHalos into one. More...
class	LensHaloHP< HType >
	LensHalo for collecting LensHalos into one with pseudo-periodic boundary conditions. More...

Detailed Description

Defines classes for representing gravitational lensing by collections of simulation particles using tree codes.

This header provides the LensHaloParticles and LensHaloParticlesO template classes, which model lensing effects from particle distributions, such as those found in cosmological simulations. The classes support reading particle data from files (ASCII or Gadget2 formats), adaptive smoothing, tree-based force calculations, and geometric transformations.

Key Features:

• Construction from simulation files or direct particle vectors.
• Adaptive smoothing based on local particle density.
• Tree-based calculation of lensing quantities (deflection, convergence, shear, potential).
• Support for recentering, rotation, and translation of particle distributions.
• Optional exclusion of a central region ("hole") for specialized lensing scenarios.
• Static factory method for creating halos from simulation snapshots, supporting multiple particle types.

Classes:

• LensHaloParticles<DType>: Main class for lensing by particle collections.
• LensHaloParticlesO<DType>: Extension of LensHaloParticles with support for a central hole.

Dependencies:

• geometry.h, quadTree.h, simpleTree.h, particle_types.h, utilities_slsim.h, lens_halos.h, oTreeNB.h, gadget.hh

Usage:

• Instantiate LensHaloParticles or LensHaloParticlesO with appropriate parameters and data sources.
• Use provided methods to compute lensing quantities, manipulate particle distributions, and query properties.

Author

[RB METCALF]

Date

[Date]