| Name: Jagriti Gaba |
| Affiliation: GD Goenka University |
| Conference ID: ASI2026_640 |
| Title: A Comparative Study of 56Ni Mass Estimates in Type Ia Supernovae |
| Abstract Type: Poster |
| Abstract Category: Stars, Interstellar Medium, and Astrochemistry in Milky Way |
| Author(s) and Co-Author(s) with Affiliation: Jagriti Gaba(GD Goenka University, Gurugram-122103, India), Rahul Kumar Thakur(IILM University, Gurugram-122003, India), Naresh Sharma(GD Goenka University, Gurugram-122103, India), Dinkar Verma(GD Goenka University, Gurugram-122103, India), Shashikant Gupta(GD Goenka University, Gurugram-122103, India) |
| Abstract: Type Ia Supernovae (SNe Ia) are stellar explosions occurring in binary star systems containing white dwarfs (WD). SNe Ia plays a fundamental role as standardizable candles in astrophysics. The radioactive decay of 56Ni, synthesized in the explosion, is the main source of the SN luminosity. Thus, estimation of nickel mass is a crucial parameter for understanding the explosion mechanism.
In this work, we have estimated the 56Ni mass for a sample of Type Ia supernovae using two independent methods. The first is Arnett’s rule, which gives the correlation between the instantaneous energy input through radioactive decay and the observed bolometric luminosity at maximum light. The second method is based on energy conservation method, which examines the total radioactive energy deposition over the light-curve evolution. We applied both methods to the same dataset to examine their consistency.
Our results confirm the robustness of both estimation techniques and establish their consistency in determining the mass of 56Ni synthesized in Type Ia supernova explosions. The close agreement between the two methods reinforces the validity of nickel mass estimates and provides deeper insight into SNe Ia explosion physics and their role in cosmological applications.
Keywords: Stars, Supernovae, White Dwarf
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