| Name: Ravi Seth |
| Affiliation: Trinity College Dublin |
| Conference ID: ASI2026_147 |
| Title: The Violent Merger Model as a Progenitor for Peculiar Type Ia Supernovae |
| Abstract Type: Poster |
| Abstract Category: High Energy Phenomena, Fundamental Physics and Astronomy |
| Author(s) and Co-Author(s) with Affiliation: Ravi Seth(Trinity College Dublin, Dublin - D02 PN40, Ireland) |
| Abstract: The progenitors for type Ia supernovae (SNe) is an area of large debate. Type Ia SNe are widely believed to come from the thermonuclear explosion of white dwarfs. I will give a brief summary on the diversity of type Ia SNe and the plausible progenitor systems. There has been growing evidence towards the violent merger of two white dwarfs being the progenitor for a class of under-luminous (02es-like) and over-luminous (03fg-like) type Ia SNe. These events are rare (<1% of the normal SN Ia rate) but have been recently linked, based on their colour and early flux excess suggesting a common explosion scenario.
I will present a parameter study on the violent merger model by simulating spectra using radiative transfer code TARDIS. My findings showcase the extremely asymmetrical nature of the violent merger model through the synthetic spectrum. I will compare my work to objects that have been classified as 02es-like and 03fg-like type Ia SNe as part of the ZTF DR2 sample and then the extensive range in the literature to better understand if the violent merger model can fully explain the observables in these classes. I hope to extend these methods to find "hidden" violent mergers in the normal type Ia SNe to find a continuum of objects from over to under-luminous type Ia SNe that can all be explained by the violent merger model. This parameter study should show us some of the diversity of SNe Ia that are possible via a violent merger that may not yet have been observed due to the low number of 02es and 03fg-like detections. |
