Nuclei in the Cosmos (NIC XVII)

Session

Novae and X-ray bursts, Type IA supernova and the p-process

19 Sept 2023, 15:15

169. Type Ia supernovae: from explosion models to observations

Ivo SEITENZAHL (UNSW Canberra)

19/09/2023, 15:15

Type Ia supernova and the p-process

Invited

In this biased review talk I will first summarise a modelling workflow (the “pipeline”) that connects rapid binary evolution progenitor models to supernova observables, via supernova explosion and nucleosynthesis simulations. I will then highlight how we can use model specific nucleosynthetic signatures of different explosion models to make inferences about what kind of white dwarfs explode as...

23. Recent Advances in the Modeling of Type I X-Ray Bursts and Nova Outbursts

Jordi JOSE (UPC Barcelona)

19/09/2023, 15:45

Novae and X-ray bursts

Oral

Type I X-ray bursts (XRBs) are thermonuclear explosions in the H/He-rich envelopes accreted onto neutron stars in close binary systems. These events constitute the most frequent type of thermonuclear stellar explosion in our Galaxy (the third, in terms of total energy output after novae and supernovae). To date, most of the efforts undertaken in the modeling of XRBs have relied on...

12. Understanding the abundance of 22Na in novae by measuring femtosecond lifetimes in 23Mg with a new method

Chloé FOUGÈRES (Argonne National Laboratory), Dr François DE OLIVEIRA SANTOS (Grand Accélérateur National d'Ions Lourds (GANIL, CEA/DRF-CNRS/IN2P3)

19/09/2023, 16:05

Novae and X-ray bursts

Oral

Simulations of explosive nucleosynthesis in novae predict the production of the radioisotope $^{22}$Na. Its half-life of 2.6 yr makes it a very interesting astronomical observable by allowing space and time correlations with the astrophysical object. Its $\gamma$-ray line at 1.275 MeV has not been observed yet by the $\gamma$-ray space observatories. This radioisotope should bring constraints...

55. Simulations of One and Two Star Explosions in the Double Degenerate Double Detonation Scenario for Type Ia Supernovae

Samuel BOOS (University of Alabama)

19/09/2023, 16:20

Type Ia supernova and the p-process

Oral

The precise origin of Type Ia supernovae (SNe Ia) is unknown despite their value to numerous areas in astronomy. While it is a long-standing consensus that they arise from an explosion of a C/O white dwarf, the exact progenitor configurations and explosion mechanisms that lead to a SN Ia are still debated. One popular theory is the double detonation in which a helium layer, accreted from a...