Interactive Explorer for Lu. et al 2026 TARDIS Spectral Emulator
This page runs a neural-network emulator that maps the ejecta parameters (design for Type Ic supernova SN2014L), including time since explosion, bolometric luminosity,outer velocity, density structure, and the integrated masses of 13 elements — onto a full optical + near-infrared synthetic spectrum (3000–24000 Å). A important note here is that these integrated elemental masses are NOT the total ejecta mass, rather it is a choice of representation for the ejecta composition. See the Lu. et al 2026 publication for more details.
The emulator was trained on roughly 700,000 radiative-transfer simulations computed with TARDIS. Here is a visualizer to explore the emulated spectra. You can pin down a baseline model, then watch how the spectrum responds when one parameter at a time is swept across the full range covered by the training grid.
Everything below — the network weights and every spectrum you see — is evaluated locally in your browser with ONNX Runtime Web. No data is sent to a server.
1. Baseline model updating…
Each panel shows the distribution of one parameter in the training grid. Drag the vertical line (or type a value) to move the baseline; the comparison plots below update immediately. The starting point is the median of the training grid.
2. Varying one parameter
Each comparison panel sweeps a single parameter across its full prior range while every other parameter stays at the baseline.