Common envelope to explosion delay time of Type Ia supernovae

Noam Soker*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


I study the rate of Type Ia supernovae (SNe Ia) within about a million years after the assumed common envelope evolution (CEE) that forms the progenitors of these SNe Ia, and find that the population of SNe Ia with short CEE to explosion delay (CEED) time is ≈few × 0.1 of all SNe Ia. I also claim for an expression for the rate of these SNe Ia that occur at short times after the CEE (tCEED ≲ 106 yr), which is different from that of the delay time distribution (DTD) billions of years after star formation. This tentatively hints that the physical processes that determine the short CEED time distribution (CEEDTD) are different (at least to some extent) from those that determine the DTD at billions of years. To reach these conclusions I examine SNe Ia that interact with a circumstellar matter (CSM) within months after explosion, so-called SNe Ia-CSM, and the rate of SNe Ia that on a time-scale of tens to hundreds of years interact with a CSM that might have been a planetary nebula, so-called SNe Ia inside a planetary nebula (SNIPs). I assume that the CSM in these populations results from a CEE, and hence this study is relevant mainly to the core-degenerate (CD) scenario, the double-degenerate (DD) scenario, the double-detonation (DDet) scenario with white dwarf companions, and to the CEE-wind channel of the single-degenerate (SD) scenario.

Original languageEnglish
Pages (from-to)2430-2435
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Issue number2
StatePublished - 1 Dec 2019


  • Binaries: close
  • Supernovae: general
  • White dwarfs


Dive into the research topics of 'Common envelope to explosion delay time of Type Ia supernovae'. Together they form a unique fingerprint.

Cite this