Start work on JOSS paper

paper.bib

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+@article{pyuvdata2017,
+    doi = {10.21105/joss.00140},
+    url = {https://doi.org/10.21105/joss.00140},
+    year = {2017},
+    publisher = {The Open Journal},
+    volume = {2},
+    number = {10},
+    pages = {140},
+    author = {Bryna J. Hazelton and Daniel C. Jacobs and Jonathan C. Pober and Adam P. Beardsley},
+    title = {pyuvdata: an interface for astronomical interferometeric datasets in python},
+    journal = {Journal of Open Source Software}
+}
+
+@article{pyuvsim2019,
+    doi = {10.21105/joss.01234},
+    url = {https://doi.org/10.21105/joss.01234},
+    year = {2019},
+    publisher = {The Open Journal},
+    volume = {4},
+    number = {37},
+    pages = {1234},
+    author = {Adam E. Lanman and Bryna J. Hazelton and Daniel C. Jacobs and
+        Matthew J. Kolopanis and Jonathan C. Pober and James E. Aguirre
+        and Nithyanandan Thyagarajan},
+    title = {pyuvsim: A comprehensive simulation package for radio interferometers in python},
+    journal = {Journal of Open Source Software}
+}

paper.md

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+---
+title: 'pyradiosky: A Python package for Radio Sky Models'
+tags:
+  - Python
+  - astronomy
+  - radio astronomy
+  - 21cm cosmology
+authors:
+  - name: Bryna Hazelton
+    orcid: 0000-0001-7532-645X
+    equal-contrib: true
+    affiliation: "1, 2"
+  - name: Matthew Kolopanis
+    orcid: 0000-0002-2950-2974
+    equal-contrib: true
+    affiliation: 3
+  - name: Adam Lanman
+    orcid: 0000-0003-2116-3573
+    equal-contrib: true
+    affiliation: 4
+  - name: Jonathan Pober
+    orcid: 0000-0002-3492-0433
+    equal-contrib: true
+    affiliation: 5
+affiliations:
+ - name: Physics Department, University of Washington, USA
+   index: 1
+ - name: eScience Institute University of Washington, USA
+   index: 2
+ - name: School of Earth and Space Exploration, Arizona State University, USA
+   index: 3
+ - name: Kavli Institute of Astrophysics and Space Research, Massachusetts Institute of Technology, USA
+   index: 4
+ - name: Department of Physics, Brown University, USA
+   index: 5
+date: 25 January 2024
+bibliography: paper.bib
+---
+
+# Summary
+
+Pyradiosky is a package to fully and generally describe models of compact,
+extended and diffuse foregrounds with full polarization support. It
+emphasizes the provenance and metadata required to understand the errors and
+covariances associated with foreground models built from interferometric data.
+
+# Statement of need
+
+The original motivation for the development of pyradiosky was to support
+high-precision simulation of interferometric data for 21 cm cosmology, but was
+deliberately developed to support a broad range of radio astronmy applications.
+Foreground models are key to the future of 21 cm analyses because high-precision
+foreground subtraction has the potential to dramatically increase the sensitivity
+of 21 cm instruments. High-quality foreground models are also extremely
+important for calibration of all radio astronomy data.
+
+Pyradiosky supports reading in catalogs in the widely used VOTable format as
+well as an HDF5 based format we developed. It also supports some formats used by
+21 cm cosmology codes and is easily extensible to other formats. It provides an
+object interface and useful methods for downselecting and combining multiple
+catalogs, coordinate transformations (with polarization support) and calculating
+fluxes at specific frequencies.
+
+As part of the Radio Astronomy Software Group suite (along with pyuvdata
+[@pyuvdata2017] and pyuvsim [@pyuvsim2019]), pyradiosky provides software
+infrastructure for a broad range of radio astronomy applications including
+enabling rigorous, seamless testing of 21 cm cosmology analysis developments.
+
+
+# References