Add mass_profile tools

* These tools are mainly use to calculate the total gravitational mass
  profile, as well as the intermediate products (e.g., surface
  brightness profile fitting, gas density profile, NFW fitting, etc.)
* There are additional tools for calculating the luminosity and flux.
* These tools mainly developed by Junhua GU, and contributed by
  Weitian (Aaron) LI, and Zhenghao ZHU.

1 files changed, 56 insertions, 0 deletions

diff --git a/mass_profile/nfw.hpp b/mass_profile/nfw.hpp
new file mode 100644
index 0000000..8e3e59e
--- /dev/null
+++ b/mass_profile/nfw.hpp
@@ -0,0 +1,56 @@
+/**
+   \file nfw.hpp
+   \brief Jingying Wang's model
+   \author Jingying Wang
+ */
+
+
+#ifndef NFW
+#define NFW
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <cmath>
+
+namespace opt_utilities
+{
+  template <typename T>
+  class nfw
+    :public model<T,T,std::vector<T>,std::string>
+  {
+  private:
+    model<T,T,std::vector<T> >* do_clone()const
+    {
+      return new nfw<T>(*this);
+    }
+
+    const char* do_get_type_name()const
+    {
+      return "1d power law";
+    }
+  public:
+    nfw()
+    {
+      this->push_param_info(param_info<std::vector<T> >("rho0",1,0,1e99));
+      this->push_param_info(param_info<std::vector<T> >("rs",100,0,1e99));
+    }
+
+    T do_eval(const T& r,const std::vector<T>& param)
+    {
+      T rho0=std::abs(param[0]);
+      T rs=std::abs(param[1]);
+      static const T pi=4*std::atan(1);
+      return 4*pi*rho0*rs*rs*rs*(std::log((r+rs)/rs)-r/(r+rs));
+    }
+
+  private:
+    std::string do_get_information()const
+    {
+      return "";
+    }
+  };
+}
+
+
+
+#endif
+//EOF