Astrophys

Useful programs for astrophysics written in javascript

In this site, you can find the following programs:

• White Dwarf Structure Program
  This program is intended to give a brief description of a white dwarf according to the central density value.

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• Euler Approximation:
  Sample program to solve the differential equation
  y' = f(x,y)
  Using the euler's method.
• Midpoint Approximation:
  Sample program to solve the differential equation
  y' = f(x,y)
  Using the midpoint method.
• Predictor - Corrector Approximation:
  Sample program to solve the differential equation
  y' = f(x,y)
  Using the predictor method.
• Runge - Kutta Approximation:
  Sample program to solve the differential equation
  y' = f(x,y)
  Using the runge-kutta method.
  

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• Newton - Raphson Method:
  Sample program to search a zero of a non linear function f(x)
• Simson's Method:
  Sample program to compute the integral of a function f(x) between a lower boundry a and an upper boundry b.

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• Second Euler Approximation:
  Sample program to solve the system of two coupled differeintial equations
  y' = fy(x,y,z)
  z' = fz(x,y,z)
  using the euler's method.
• Second Midpoint Approximation:
  Sample program to solve the system of two coupled differeintial equations
  y' = fy(x,y,z)
  z' = fz(x,y,z)
  using the midpoint method.
• Second Predictor Approximation
  Sample program to solve the system of two coupled differeintial equations
  y' = fy(x,y,z)
  z' = fz(x,y,z)
  using th predictor method.
• Second Runge Approximation:
  Sample program to solve the system of two coupled differeintial equations
  y' = fy(x,y,z)
  z' = fz(x,y,z)
  using the runge method.