Spectra of supernovae during the photospheric phase

3.1 Introduction

3.2 The photospheric phase

3.2.1 Concept of the photosphere

3.2.2 Photospheres in supernovae

3.3 Formation of spectral features

3.3.1 Absorption, scattering and emission processes in expanding atmospheres

3.3.2 The Sobolev approximation for line opacity

3.3.2 Resonance scattering and the P Cygni line profile

3.3.3 Line blocking and fluorescence

3.3.4 Electron scattering line wings

3.4 Spectral modelling

3.4.1 Considerations and challenges

3.4.2 Widely-used simplifications

3.4.2.1 The “Core-halo” approximation

3.4.2.2 Excitation/Ionization approximations

3.4.2.3 Spherical symmetry

3.4.2.4 Time-independence

3.5 Interpretation of spectral analyses

3.5.1 Line velocities

3.5.2 Spectral diagnostics

3.5.3 Composition stratification

3.5.4 Common issues and limitations

public/sim-plan.txt · Last modified: 2015/10/21 10:11 by Stephen Smartt

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