pysm
19 posts
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PySM: produce CAR output at the smoothing stage
PySM 3 only builds HEALPix skies. Here is how to produce CAR pixelization output at the smoothing stage with a single spherical harmonic transform, and a validation against the smooth-then-reproject route.
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PySM 3.4.6 released: FLAMINGO kSZ models and c1 documentation
A practical introduction to the new FLAMINGO kinetic SZ presets and documented c1 cosmology in PySM 3.4.6.
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PySM 3.4.5: HalfDome TSZ model, scipy pin removed, Python 3.9 dropped
PySM 3.4.5 is now available on PyPI and GitHub. Changes in this release:
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PySM 3.4.4 released with new SZ models and NumPy 2 support
PySM 3.4.4 is now available both on PyPI and on conda-forge. This release is mostly about extending the Sunyaev-Zeldovich model suite and making sure PySM works cleanly with NumPy 2.
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PySM 3.4.3 Released
PySM version 3.4.3 is now live. Install it from PyPI or upgrade existing environments with pip install --upgrade pysm3. Full details are available in the GitHub release notes.
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PySM methods paper published in ApJ
The Astrophysical Journal formally published our paper, Full-sky Models of Galactic Microwave Emission and Polarization at Sub-arcminute Scales for the Python Sky Model, on September 12, 2025. I wanted to capture the news here now that the issue is out, following up on my March note about the ArXiv submission.
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BK18 added to Panexp model suite and new WebSky radio source models in PySM 3.4.1
Following up on my previous post about Panexp model suite simulations, there have been several important updates: BK18 Simulation Now Available
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PySM 3.4.1 Released
PySM version 3.4.1 is now available. It can be downloaded from PyPI. The release notes detail new features and improvements.
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New simulations of the Panexp model suite for Planck and WMAP
Following up on my recent post about PySM models for Galactic emission, I have recently executed three new simulations of the Panexp model suite:
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New paper on arXiv about models of Galactic emission in the microwaves for CMB experiments
A new paper has been published on Arxiv discussing models of Galactic emission in the microwaves for Cosmic Microwave Background (CMB) experiments:
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Generate sample Cosmology data for Cheap and FAIR data portal with PySM
This notebook generates some figures of Galactic and Extra-Galactic emissions using PySM. Mostly for displaying purposes.
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2024-07-29-pysm-point-source-pixell-healpix
Testing the pixell simobjects functionality to create maps of point sources pre-smoothed with a gaussian beam. The purpose is to include this functionality in PySM to be able to generate on the fly maps of source starting from a catalog.
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News item on SDSC website about Advanced Simons Observatory and PySM
In collaboration with the SDSC Communications team I prepared a news item for the SDSC Website announcing my participation in the Advanced Simons Observatory project focusing on my work on supporting PySM.
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2024-05-02-pysm-point-source-pixell
Testing the pixell simobjects functionality to create maps of point sources pre-smoothed with a gaussian beam. The purpose is to include this functionality in PySM to be able to generate on the fly maps of source starting from a catalog.
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Generate figures for PySM emissions
This notebook generates some figures of Galactic and Extra-Galactic emissions using PySM. Mostly for displaying purposes.