Late light curves of SN Ia

Milne, Peter A.; The, Lih-Sin; Leising, Mark D.
June 2000
AIP Conference Proceedings;2000, Vol. 522 Issue 1, p85
Academic Journal
A “positron phase” exists in type Ia supernovae, during which the energy deposition into the SN ejecta is dominated by the slowing of [sup 56]Co→[sup 56]Fe β[sup +] decay positrons. Comparisons of model-generated bolometric light curves with V and B band photometry during this phase suggests that the magnetic field is either too weak to confine positrons, or is radially combed. In each case, positrons escape the ejecta leading to a deficit of energy deposition. Ramifications of this escape upon other studies of SN Ia emission is discussed. © 2000 American Institute of Physics.


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