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-rw-r--r--astro/cosmo_calc/.gitignore2
-rw-r--r--astro/cosmo_calc/Makefile31
-rw-r--r--astro/cosmo_calc/README.txt20
-rw-r--r--astro/cosmo_calc/VERSION.txt10
-rw-r--r--astro/cosmo_calc/adapt_trapezoid.h124
-rw-r--r--astro/cosmo_calc/calc_distance.cc140
-rw-r--r--astro/cosmo_calc/calc_distance.h59
-rw-r--r--astro/cosmo_calc/ddivid.cc56
-rw-r--r--astro/cosmo_calc/ddivid.h8
-rw-r--r--astro/cosmo_calc/main.cc140
10 files changed, 0 insertions, 590 deletions
diff --git a/astro/cosmo_calc/.gitignore b/astro/cosmo_calc/.gitignore
deleted file mode 100644
index 009f466..0000000
--- a/astro/cosmo_calc/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-# ignore the executable
-cosmo_calc
diff --git a/astro/cosmo_calc/Makefile b/astro/cosmo_calc/Makefile
deleted file mode 100644
index abd12bb..0000000
--- a/astro/cosmo_calc/Makefile
+++ /dev/null
@@ -1,31 +0,0 @@
-##
-## Makefile for `calc_distance'
-##
-## Junhua Gu
-## last modified: August 12, 2012
-##
-
-CPP= g++
-CPPFLAGS= -Wall -g
-
-TARGET= cosmo_calc
-
-all: $(TARGET)
-
-cosmo_calc: calc_distance.o ddivid.o main.o
- $(CPP) $(CPPFLAGS) $^ -o $@
-
-calc_distance.o: calc_distance.cc calc_distance.h
- $(CPP) $(CPPFLAGS) -c $<
-
-ddivid.o: ddivid.cc ddivid.h
- $(CPP) $(CPPFLAGS) -c $<
-
-main.o: main.cc ddivid.h calc_distance.h
- $(CPP) $(CPPFLAGS) -c $<
-
-clean:
- rm -f *.o
- rm -f $(TARGET)
-
-
diff --git a/astro/cosmo_calc/README.txt b/astro/cosmo_calc/README.txt
deleted file mode 100644
index b18e120..0000000
--- a/astro/cosmo_calc/README.txt
+++ /dev/null
@@ -1,20 +0,0 @@
-//
-// simple `cosmology calculator'
-// can calc commonly used cosmology distances:
-// hubble distance
-// comoving distance
-// transverse comoving distance
-// angular diameter distance
-// luminoisity distance
-// light-travel distance
-// in addition, this calculator also calc some other
-// useful infomation related with Chandra
-//
-// Junhua Gu
-// LIweitiaNux <liweitianux@gmail.com>
-//
-// Version 2.0
-//
-// Last Modified:
-// August 12, 2012
-//
diff --git a/astro/cosmo_calc/VERSION.txt b/astro/cosmo_calc/VERSION.txt
deleted file mode 100644
index f99d493..0000000
--- a/astro/cosmo_calc/VERSION.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-Version 2.2
-2013/02/09
-
-ChangeLogs:
-v2.2:
- 2013/02/09, LIweitiaNux
- add 'hubble_parameter E(z)'
- modify output format
-
-
diff --git a/astro/cosmo_calc/adapt_trapezoid.h b/astro/cosmo_calc/adapt_trapezoid.h
deleted file mode 100644
index 35d22b4..0000000
--- a/astro/cosmo_calc/adapt_trapezoid.h
+++ /dev/null
@@ -1,124 +0,0 @@
-#ifndef ADAPT_TRAPEZOID_H
-#define ADAPT_TRAPEZOID_H
-#include <list>
-#include <utility>
-#include <cassert>
-//#include <iostream>
-
-//using namespace std;
-
-template<typename T1,typename T2,typename T3>
-class triple
-{
- public:
- T1 first;
- T2 second;
- T3 third;
- triple(T1 x1,T2 x2,T3 x3)
- :first(x1),second(x2),third(x3)
- {
- }
-};
-
-
-template<typename T1,typename T2,typename T3>
-triple<T1,T2,T3> make_triple(T1 x1,T2 x2,T3 x3)
-{
- return triple<T1,T2,T3>(x1,x2,x3);
-}
-
-template <typename T>
-T trapezoid(T (*fun)(T),T x1,T x2,T err_limit)
-{
- int n=256;
- T result;
- const int max_division=24;
- T old_value=0;
- for(int i=1;i<max_division;i++)
- {
- result=0.;
- n*=2;
- T step=(x2-x1)/n;
- for(int j=0;j<n;j++)
- {
- result+=(fun(x1+(j+1)*step)+fun(x1+j*step))*step/T(2.);
- }
- old_value-=result;
- old_value=old_value<0?-old_value:old_value;
- if(old_value<err_limit)
- {
- return result;
- }
- old_value=result;
- }
-}
-
-
-template <typename T>
-T adapt_trapezoid(T (*fun)(T),T x1,T x2,T err_limit)
-{
- // const err_limit=.001;
- typedef triple<T,T,bool> interval;
- /*T for interval type,
- bool for state trur for still to be updated,
- false for do not need to be updated
- */
- std::list<interval> interval_list;
- T current_sum=((fun(x1)+fun(x2))/2.*(x2-x1));
- interval_list.push_back(make_triple(x1,current_sum,true));
- interval_list.push_back(make_triple(x2,(T)0.,true));
- bool int_state=1;
- int n_intervals=1;
- while(int_state)
- {
- //std::cout<<n_intervals<<std::endl;
- int_state=0;
- typename std::list<interval>::iterator i1=interval_list.begin();
- typename std::list<interval>::iterator i2=interval_list.begin();
- i2++;
- for(;i2!=interval_list.end();i1++,i2=i1,i2++)
- {
- //cout<<i1->first<<"\t"<<i2->first<<endl;
- //assert(i2->first>i1->first);
- if(i1->third)
- {
- interval new_interval((i1->first+i2->first)/2,0,true);
-
- T sum1,sum2;
- sum1=(fun(new_interval.first)+fun(i1->first))/2*(new_interval.first-i1->first);
- sum2=(fun(new_interval.first)+fun(i2->first))/2*(i2->first-new_interval.first);
- new_interval.second=sum2;
- T err;
- err=i1->second-sum1-sum2;
- err=err<0?-err:err;
-
- if(err>err_limit/n_intervals)
- {
- i1->second=sum1;
- interval_list.insert(i2,new_interval);
- n_intervals++;
- if(n_intervals>10e6)
- {
-
- break;
- }
- }
- else
- {
- i1->third=false;
- }
- int_state=1;
- }
- }
-
- }
- T result=0;
- for(typename std::list<interval>::iterator i=interval_list.begin();i!=interval_list.end();i++)
- {
- result+=i->second;
- }
- return result;
-}
-
-#endif
-//end of the file
diff --git a/astro/cosmo_calc/calc_distance.cc b/astro/cosmo_calc/calc_distance.cc
deleted file mode 100644
index 4c96dc8..0000000
--- a/astro/cosmo_calc/calc_distance.cc
+++ /dev/null
@@ -1,140 +0,0 @@
-// calc_distance.cc
-// calculate commonly used cosmology distances
-// Ref: https://en.wikipedia.org/wiki/Distance_measures_(cosmology)
-//
-// Junhua Gu
-//
-// ChangeLogs:
-// 2012/08/12, LIweitiaNux
-// fix a bug in `calc_angular_distance()'
-// add `calc_transcomv_distance()' and
-// account `omega_k >0, <0' cases
-// add `calc_ligtrav_distance()'
-//
-
-#include <iostream>
-#include <cmath>
-#include <cstdlib>
-#include <cstddef>
-#include <cassert>
-// integrator
-#include "adapt_trapezoid.h"
-
-// extern variables in `calc_distance.h'
-extern double c;
-extern double km;
-extern double s;
-extern double Mpc;
-// cosmology parameters
-extern double H0; // units: [km/s/Mpc]
-extern double omega_m;
-extern double omega_l;
-extern double omega_k;
-// precision to determine float number equality
-extern double eps;
-
-using namespace std;
-
-// auxiliary functions
-// for `calc_comoving_distance'
-double f_comvdist(double z);
-// for `calc_ligtrav_distance'
-double f_ligdist(double z);
-double f_age(double z);
-
-/////////////////////////////////////////////////
-// main functions
-// //////////////////////////////////////////////
-// dimensionless Hubble parameter
-double E(double z)
-{
- return sqrt(omega_m*(1+z)*(1+z)*(1+z) + omega_k*(1+z)*(1+z) + omega_l);
-}
-
-// Hubble distance
-double calc_hubble_distance(void)
-{
- //
- // cerr << "*** H0 = " << H0 << " ***" << endl;
- //
- double _H0_ = H0 * km/s/Mpc;
- return c / _H0_;
-}
-
-// calc `comoving distance'
-double calc_comoving_distance(double z)
-{
- double d_H = calc_hubble_distance();
- return d_H * adapt_trapezoid(f_comvdist, 0.0, z, 1e-4);
-}
-
-// calc `transverse comoving distance'
-double calc_transcomv_distance(double z)
-{
- if (fabs(omega_k) <= eps) {
- // omega_k = 0
- // flat, d_M(z) = d_C(z)
- return calc_comoving_distance(z);
- }
- else if (omega_k > 0.0) {
- // omega_k > 0
- // d_M(z) = d_H/sqrt(omega_k) * sinh(sqrt(omega_k) * d_C(z) / d_H)
- // ^ ^
- double d_H = calc_hubble_distance();
- double d_C = calc_comoving_distance(z);
- return (d_H / sqrt(omega_k) * sinh(sqrt(omega_k) * d_C / d_H));
- }
- else {
- // omega_k < 0
- // d_M(z) = d_H/sqrt(-omega_k) * sin(sqrt(-omega_k) * d_C(z) / d_H)
- // ^ ^ ^
- double d_H = calc_hubble_distance();
- double d_C = calc_comoving_distance(z);
- return (d_H / sqrt(-omega_k) * sin(sqrt(-omega_k) * d_C / d_H));
- }
-}
-
-// calc `angular diameter distance'
-// d_A(z) = d_M(z)/(1+z)
-double calc_angdia_distance(double z)
-{
- return (calc_transcomv_distance(z) / (1+z));
-}
-
-// calc `luminoisity distance'
-// d_L(z) = (1+z)*d_M(z)
-double calc_luminosity_distance(double z)
-{
- return (calc_transcomv_distance(z) * (1+z));
-}
-
-// calc `light-travel distance'
-// d_T(z) = d_H \int_0^z 1/((1+z)*E(z)) dz
-double calc_ligtrav_distance(double z)
-{
- double d_H = calc_hubble_distance();
- return d_H * adapt_trapezoid(f_ligdist, 0.0, z, 1e-4);
-}
-
-
-// auxiliary functions
-// for `calc_comoving_distance'
-double f_comvdist(double z)
-{
- return 1.0/E(z);
-}
-
-// for `calc_ligtrav_distance'
-double f_ligdist(double z)
-{
- return 1.0 / ((1+z)*E(z));
-}
-
-double f_age(double z)
-{
- return f_comvdist(1.0/z) / (z*z);
-}
-
-
-// EOF
-/* vim: set ts=8 sw=4 tw=0 fenc=utf-8 ft=cpp: */
diff --git a/astro/cosmo_calc/calc_distance.h b/astro/cosmo_calc/calc_distance.h
deleted file mode 100644
index a1f3352..0000000
--- a/astro/cosmo_calc/calc_distance.h
+++ /dev/null
@@ -1,59 +0,0 @@
-// calc_distance.h
-// calculate commonly used cosmology distances
-// Ref: https://en.wikipedia.org/wiki/Distance_measures_(cosmology)
-//
-// Junhua Gu
-//
-// ChangeLogs:
-// 2012/08/12, LIweitiaNux
-// fix a bug in `calc_angular_distance()'
-// add `calc_transcomv_distance()' and
-// account `omega_k >0, <0' cases
-//
-
-#ifndef CALC_DISTANCE_H
-#define CALC_DISTANCE_H
-
-double cm=1.0;
-double s=1.0;
-double km=1000*100*cm;
-double Mpc=3.08568e+24*cm;
-double kpc=3.08568e+21*cm;
-double yr=365.*24.*3600.*s;
-double Gyr=1e9*yr;
-double arcsec2arc_ratio=1./60/60/180*3.1415926;
-double c=299792458.*100.*cm;
-
-// cosmology parameters
-double H0=71.0; // units: [km/s/Mpc]
-double omega_m=0.27;
-double omega_l=0.73;
-double omega_k=1.0-omega_m-omega_l;
-
-// precision to determine float number equality
-double eps=1.0e-7;
-
-// open functions
-//
-// dimensionless Hubble parameter
-extern double E(double z);
-// Hubble distance
-extern double calc_hubble_distance(void);
-// calc `comoving distance'
-extern double calc_comoving_distance(double z);
-// calc `transverse comoving distance'
-extern double calc_transcomv_distance(double z);
-// calc `angular diameter distance'
-// d_A(z) = d_M(z)/(1+z)
-extern double calc_angdia_distance(double z);
-// calc `luminoisity distance'
-// d_L(z) = (1+z)*d_M(z)
-extern double calc_luminosity_distance(double z);
-// calc `light-travel distance'
-// d_T(z) = d_H \int_0^z 1/((1+z)*E(z)) dz
-extern double calc_ligtrav_distance(double z);
-
-#endif /* CALC_DISTANCE_H */
-
-//EOF
-/* vim: set ts=8 sw=4 tw=0 fenc=utf-8 ft=cpp: */
diff --git a/astro/cosmo_calc/ddivid.cc b/astro/cosmo_calc/ddivid.cc
deleted file mode 100644
index aa72471..0000000
--- a/astro/cosmo_calc/ddivid.cc
+++ /dev/null
@@ -1,56 +0,0 @@
-#include <cassert>
-
-double ddivid(double (*foo)(double),double x1,double x2,double err)
-{
- assert(x2>x1);
- assert(foo(x2)*foo(x1)<0);
- while(x2-x1>err)
- {
- double x=(x2+x1)/2.;
- double y=foo(x);
- double y1=foo(x1);
- double y2=foo(x2);
- if(y1*y<0)
- {
- x2=x;
- }
- else if(y2*y<0)
- {
- x1=x;
- }
- else
- {
- assert(0);
- }
-
- }
- return (x1+x2)/2.;
-}
-
-
-double ddivid(double (*foo)(double),double z,double x1,double x2,double err)
-{
- assert(x2>x1);
- assert((foo(x2)-z)*(foo(x1)-z)<0);
- while(x2-x1>err)
- {
- double x=(x2+x1)/2.;
- double y=foo(x)-z;
- double y1=foo(x1)-z;
- double y2=foo(x2)-z;
- if(y1*y<0)
- {
- x2=x;
- }
- else if(y2*y<0)
- {
- x1=x;
- }
- else
- {
- assert(0);
- }
-
- }
- return (x1+x2)/2.;
-}
diff --git a/astro/cosmo_calc/ddivid.h b/astro/cosmo_calc/ddivid.h
deleted file mode 100644
index a957de5..0000000
--- a/astro/cosmo_calc/ddivid.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef DDIVID
-#define DDIVID
-
-extern double ddivid(double (*foo)(double),double x1,double x2,double err);
-extern double ddivid(double (*foo)(double),double z,double x1,double x2,double err);
-
-#endif
-//EOF
diff --git a/astro/cosmo_calc/main.cc b/astro/cosmo_calc/main.cc
deleted file mode 100644
index bbd73ba..0000000
--- a/astro/cosmo_calc/main.cc
+++ /dev/null
@@ -1,140 +0,0 @@
-//
-// simple `cosmology calculator'
-// can calc commonly used cosmology distances:
-// hubble distance
-// comoving distance
-// transverse comoving distance
-// angular diameter distance
-// luminoisity distance
-// light-travel distance
-// in addition, this calculator also calc some other
-// useful infomation related with Chandra
-//
-// Junhua Gu
-//
-// Modified by: LIweitiaNux
-//
-// ChangeLogs:
-// v2.1, 2012/08/12, LIweitiaNux
-// improve cmdline parameters
-// v2.2, 2013/02/09, LIweitiaNux
-// add 'hubble_parameter E(z)'
-// modify output format
-//
-
-
-#include "calc_distance.h"
-#include "ddivid.h"
-#include <cstdio>
-#include <cstdlib>
-#include <cmath>
-#include <iostream>
-
-using namespace std;
-
-// extern variables in `calc_distance.h'
-extern double cm;
-extern double s;
-extern double km;
-extern double Mpc;
-extern double kpc;
-extern double yr;
-extern double Gyr;
-extern double H0; // units: [km/s/Mpc]
-extern double c;
-extern double omega_m;
-extern double omega_l;
-extern double omega_k;
-extern double arcsec2arc_ratio;
-
-// README, ABOUT
-static char DESC[] = "simple cosmology calculator";
-static char VER[] = "v2.2, 2013-02-09";
-
-// setting parameters
-static double PI = 4*atan(1.0);
-// chandra related
-static double arcsec_per_pixel = 0.492;
-// above cosmology paramters can also be changed
-// through cmdline paramters
-
-// functions
-void usage(const char *name);
-
-//////////////////////////////////////////////
-// main part
-//////////////////////////////////////////////
-int main(int argc,char* argv[])
-{
- double z; // given redshift
-
- // cmdline parameters
- if (argc == 2) {
- // get input redshift
- z = atof(argv[1]);
- }
- else if (argc == 3) {
- z = atof(argv[1]);
- // use specified `H0'
- H0 = atof(argv[2]);
- }
- else if (argc == 4) {
- z = atof(argv[1]);
- H0 = atof(argv[2]);
- // get specified `Omega_M'
- omega_m = atof(argv[3]);
- omega_l = 1.0-omega_m;
- }
- else {
- usage(argv[0]);
- exit(-1);
- }
-
- // calc `Hubble parameter E(z)'
- double E_z = E(z);
- // calc `comoving distance'
- double d_C = calc_comoving_distance(z);
- // calc `angular diameter distance'
- double d_A = calc_angdia_distance(z);
- // calc `luminoisity distance'
- double d_L = calc_luminosity_distance(z);
-
- // output results
- // parameters
- printf("Parameters:\n");
- printf(" z= %lf, H0= %lf, Omega_M= %lf, Omega_L= %lf\n",
- z, H0, omega_m, omega_l);
- printf("Distances:\n");
- printf(" Comoving_distance: D_C(%lf)= %lg [cm], %lf [Mpc]\n",
- z, d_C, d_C/Mpc);
- printf(" Angular_diameter_distance: D_A(%lf)= %lg [cm], %lf [Mpc]\n",
- z, d_A, d_A/Mpc);
- printf(" Luminoisity_distance: D_L(%lf)= %lg [cm], %lf [Mpc]\n",
- z, d_L, d_L/Mpc);
- printf("Chandra_related:\n");
- printf(" kpc/pixel (D_A): %lf\n",
- (d_A / kpc * arcsec_per_pixel* arcsec2arc_ratio));
- printf(" cm/pixel (D_A): %lg\n",
- (d_A * arcsec_per_pixel* arcsec2arc_ratio));
- printf("Other_data:\n");
- printf(" Hubble_parameter: E(%lf)= %lf\n", z, E_z);
- printf(" kpc/arcsec (D_A): %lf\n", (d_A / kpc * arcsec2arc_ratio));
- printf(" norm (cooling_function): %lg\n",
- (1e-14 / (4.0 * PI * pow(d_A*(1+z), 2))));
-
- //cout<<ddivid(calc_distance,d,0,1,.0001)<<endl;
-
- return 0;
-}
-
-// other auxiliary functions
-void usage(const char *name)
-{
- cerr << "Usage: " << endl;
- cerr << " " << name << " z [H0] [Omega_M]" << endl;
- // description
- cout << endl << "About:" << endl;
- cout << DESC << endl << VER << endl;
-}
-
-/* vim: set ts=8 sw=4 tw=0 fenc=utf-8 ft=cpp: */
Copyright © 2017-2018 Aaron LI. All Rights Reserved.