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Category Archives: Uncategorized
Protostar Formation – Infographic
Took me a while to do that. I hope that you like what I did. In some respects, I am not happy. I wanted to fit much, much more info. But I saw very soon that that was not going to … Continue reading
Protostar formation – mindmap
Edit: see the infographic HERE Why this, actually? Once upon a time, I had an astrophysics exam. I took this book and put myself to work. I read the relevant chapters carefully, and crafted summaries and mindmaps for each block of … Continue reading
Animated astronomy video
I just found this video in YouTube, created by the same people who makes PhD comics. After watching it I had to share it in here. This is good stuff. Albeit not thorough, frenetically fast, deceptively messy, and beautifully executed. … Continue reading
Carolyn Porco: This is Saturn
I wanted to share this with you. A TED talk about the exploration of Saturn by Carolyn Porco. I hope that you enjoy it!
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The Solar Neutrino Problem
The solar core emits neutrinos as a result of the nuclear reactions in the ppchain. The thing with neutrinos is, they have a very small crosssection, and therefore are very difficult to detect (they can go all the way through Earth … Continue reading
Solar Model
The Sun, a typical mainsequence star of spectral class G2, with a surface of composition X = 0.73 (mass fraction of hydrogen) and Z = 0.02 (mass fraction of metals). Current estimated age: 4.52e9 years. The standard solar model applies physical stellar … Continue reading
Stellar Modelling
Stellar Models require: The fundamental stellar structure equations (FSSE) The constitutive relations (CR): “equations of state” describing the physical properties of the matter of the star. If the structure of the star is changing, the influence of gravitational energy must … Continue reading
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Tagged adiabatic convection, boundary conditions, constitutive relations, convection domination, energy equation, equations of state, fundamental stellar structure equations, hydrostatic equilibrium, iterations, main sequence properties, mass conservation, numerical integration, radiation domination, radiative transport, stellar modelling, stellar models, VogtRussell theorem
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