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Project Description

MOSFiT (Modular Open-Source Fitter for Transients) is a Python 2.7/3.x package that performs maximum likelihood analysis to fit semi-analytical model predictions to observed transient data. Data can be provided by the user, or can be pulled automatically from the Open Supernova Catalog by its name, and thus the code can be used to fit any supernova within that database, or any database that shares the format described in the OSC schema (such as the Open TDE Catalog or the Open Nova Catalog).

Getting Started

To install MOSFiT into your Python environment, clone the package and then run the setup.py file:

git clone https://github.com/guillochon/MOSFiT.git
cd MOSFiT
python setup.py install

Once installed, MOSFiT can be run from any directory, and it’s typically convenient to make a new directory for your project.

mkdir mosfit_runs
cd mosfit_runs

Then, to run MOSFiT, pass an event name to the program via the -e flag (the default model is a simple Nickel-Cobalt decay with diffusion):

python -m mosfit -e LSQ12dlf

Multiple events can be fit in succession by passing a list of names separated by spaces (names containing spaces can be specified using quotation marks):

python -m mosfit -e LSQ12dlf SN2015bn "SDSS-II SN 5751"

MOSFiT is parallelized and can be run in parallel by prepending mpirun -np #, where # is the number of processors in your machine +1 for the master process. So, if you computer has 4 processors, the above command would be:

mpirun -np 5 python -m mosfit -e LSQ12dlf

MOSFiT can also be run without specifying an event, which will yield a collection of light curves for the specified model described by the priors on the possible combinations of input parameters specified in the parameters.json file. This is useful for determining the range of possible outcomes for a given theoretical model:

mpirun -np 5 python -m mosfit -i 0 -m magnetar

The code outputs JSON files for each event/model combination that each contain a set of walkers that have been relaxed into an equilibrium about the combinations of parameters with the maximum likelihood. This output is visualized via an example Jupyter notebook (mosfit.ipynb) included with the software in the main directory, which by default shows output from the last MOSFiT run.

Release History

Release History

0.2.5

This version

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0.2.3

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0.2.2

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0.2.1

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0.2.0

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0.1.5

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0.1.4

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0.1.3

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0.1.2

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0.1.1

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0.1.0

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
mosfit-0.2.5.tar.gz (1.8 MB) Copy SHA256 Checksum SHA256 Source Feb 22, 2017

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