MOSFiT (Modular Open-Source Fitter for Transients) is a Python 3.11+ package for fitting, sharing, and estimating the parameters of transients via user-contributed transient models. This is MOSFiT 2.0. Data for a transient can be provided by the user in a wide range of formats (JSON, ASCII tables, CDS, LaTeX).
See CHANGELOG.md for unreleased work and versioned notes.
Installation
Development installs use uv and Python 3.11+:
git clone https://github.com/guillochon/MOSFiT.git
cd MOSFiT
uv sync
Then run MOSFiT with uv run mosfit ..., or activate .venv.
Published installs are also available via conda and pip. conda-forge will
ship 2.0 after a feedstock update (see recipe/); astrocats >= 0.5.0 must
land on conda-forge first:
conda install -c conda-forge mosfit
or:
pip install mosfit
MPI support (mpi4py) is optional and needs a system MPI library:
uv sync --extra mpi
The SESN SEDONA emulator (sesn_sedona) needs PyTorch. Install that extra with:
uv sync --extra sedona
or, for a published install, pip install 'mosfit[sedona]'. Default models do not require it.
Using MOSFiT
The default sampler is nested sampling with dynesty. Pass local catalog JSON (or ASCII) with -e. Use --max-cores for local process-pool parallelism (no MPI required):
mosfit -e ./my_transient.json -m slsn --max-cores 10
mosfit -e mosfit/tests/PS1-10jh.json -m tde --max-cores 10 -R
Switch to ensemble MCMC with -D ensembler, or UltraNest with -D ultranest. Fits write products under products/ (including walkers.h5, and optionally chain.h5 if run with -c). For detailed instructions, see the documentation on RTD: https://mosfit.readthedocs.io/
3 maintainers
Release files for mosfit 2.0.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| mosfit-2.0.0.tar.gz | 58.9 MB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| mosfit-2.0.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 118.0 MB
Release files / mosfit-2.0.0.tar.gz
| Download URL | mosfit-2.0.0.tar.gz |
|---|---|
| Size | 58.9 MB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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| Download URL | mosfit-2.0.0-py3-none-any.whl |
|---|---|
| Size | 59.1 MB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
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Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
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