Wang et al, ApJ 591, 1110 Spectropolarimetry of SN 2001el in NGC 1448: Asphericity of a Normal Type Ia Supernova
- this level of asymmetry would produce an absolute luminosity dispersion of about 0.1 mag when viewed at different viewing angles. If typical for SNe Ia, this would create an rms scatter of several hundredths of a magnitude around the mean brightness–decline relation. We discuss the possible implications of this scatter for the high-precision measurements required to determine the cosmological equation of state.
