ZTF SN Ia DR2 follow-up: early excess in Type Ia supernova light curves

arXiv:2607.22050 · astro-ph.CO · Submitted 2026-07-24 · Read on arXiv

Tomás E. Müller-Bravo, Kate Maguire, Alaa Alburai, Umut Burgaz, Georgios Dimitriadis, Lluís Galbany, Joel Johansson, Young-Lo Kim, Chang Liu, Adam A. Miller, Mathew Smith, Jesper Sollerman, Eric C. Bellm, Joahan Castaneda Jaimes, Mansi M. Kasliwal, Russ R. Laher, Roger Smith, Niharika Sravan

astro-ph.CO

Submitted: 2026-07-24

Comments: Accepted in A&A. 14+8 pages, 12+11 figures. Abstract edited due to Arxiv's characters limit

Code: https://github.com/MickaelRigault/ztfidr

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Core — 13× in this paper · explained in 2 episodes
• Double Detonation — 8× in this paper
• Trace — 2× in this paper · explained in 2 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Adam — 1× in this paper · explained in 2 episodes
• Archetype — 1× in this paper · explained in 1 episode
• BK21 Fostering Outstanding Universities for Research — 1× in this paper

Sources

• Companion Shocking Fits to the 2018 ZTF Sample of SNe Ia Are Consistent with Single-Degenerate Progenitor Systems
• Rapid follow-up observations of infant supernovae with the Gran Telescopio Canarias
• Seeing the Outer Edge of the Infant Type Ia Supernova 2024epr in the Optical and Near Infrared
• The First Day of a Type Ia Supernova from a Double-Degenerate Binary
• Decoding the Early-Time Light Curves of Type Ia Supernovae. I. A Hierarchical Bayesian Framework for Demographic Inference
• Decoding the Early-Time Light Curves of Type Ia Supernovae. II. Population Parameters of One Thousand ZTF Supernovae
• The La Silla Schmidt Southern Survey
• WFST Supernovae in the First Year: I. Statistical Study of 16 Early-phase Type Ia Supernovae from the Pilot Survey

Related papers

• Angular clustering and bias of photometric quasars in the Kilo-Degree Survey Data Release 4
• A Novel kinetic Sunyaev-Zel'dovich Estimator for Electron-Electron Correlations
• Magnetic fields at the dawn of structure formation I. The CARLA J1510+5958 proto-cluster
• Dark Energy Survey Year 6 Results: Weak Lensing and Galaxy Clustering Cosmological Analysis Framework
• Exploring the Impact of Systematic Bias in Type Ia Supernova Cosmology Across Diverse Dark Energy Parametrizations
• Non-Gaussian Galaxy Stochasticity and the Noise-Field Formulation