SUMMARY
The discussion focuses on calculating the solar photon flux in photons m-2 s-1 for a satellite in low Earth orbit, given the Solar Constant of 1000 W m-2 and the distance of 0.5 AU from the Sun. Participants emphasize the need to apply Planck's radiation law, specifically E = hν, to convert energy flux into photon flux. The integration of the Planck function over the wavelength range of 100 nm to 1000 nm is necessary to derive an accurate photon flux value, which is expected to fall within the range of 1020 to 1022 photons m-2 s-1.
PREREQUISITES
- Understanding of Planck's radiation law and its application.
- Familiarity with the concepts of solar constant and photon flux.
- Knowledge of numerical integration techniques for continuous functions.
- Basic grasp of units conversion between energy and photon counts.
NEXT STEPS
- Study the application of Planck's law in astrophysics.
- Learn numerical integration methods using tools like Mathematica or Maple.
- Research the relationship between energy flux and photon flux in detail.
- Explore the concept of solid angles and their relevance in astrophysical calculations.
USEFUL FOR
Astrophysicists, satellite engineers, and students in physics or astronomy looking to understand solar radiation effects on satellites in low Earth orbit.