Bump ligo-skymap from 2.1.2 to 2.2.0

[dependabot]

Bumps ligo-skymap from 2.1.2 to 2.2.0.

Changelog

Sourced from ligo-skymap's changelog.

2.2.0 (2025-01-29)

• Display at least three significant figures in the credible area shown in the plots produced by the command line tool ligo-skymap-plot so that a nonzero value is printed if the area is less than 1 deg2.

• Adjust boundary conditions for linear interpolation of credible areas so that nonzero values are reported when the credible region is smaller than one pixel.

• Some improvements to plot markers:

  • The Earth plot marker is now unfilled by default. It is no longer necessary to specify markerfacecolor='none'.

  • Added markers for the Sun and Moon.

• Several improvements in ligo-skymap-from-samples, including a speedup from about 1 min to 20 s for an input of 10,000 samples on high core count (up to 128 core) x86_64 machines:

  • Parallelize the evaluation of the 2D KDE.

  • Pre-whiten the data before clustering to avoid matrix inverses in an inner loop. This speeds up the clustering by about 2x.

  • Replace our pure Python implementation of the k-means assignment step with the Cython implementation from scipy.cluster.vq.

  • Add a progress bar for the HEALPix adaptive refinement step.

  • Record the runtime in the output FITS file's header.

  • Reuse the Python mulitprocessing pool to avoid the overhead of spawning new workers for each parallel section.

  • Add chunk size heuristic to reduce overhead of parallel maps using Python mulitprocessing.

Commits

• cd65a8c Update changelog for version 2.2.0
• 7aa1e3e Update changelog for version 2.2.0rc1
• 1360f70 Add more unit tests for bayestar_adaptive_grid
• e87dac4 Add more checks to test_bayestar_adaptive_grid
• fff0e52 Fix array shape
• 4a503ba Lift whiten points out of another loop
• 6fa7e7c Show docs for sun marker
• 53dc15d Add moon marker
• d26ef08 Adjust path
• e02ebdf Fix import order
• Additional commits viewable in compare view

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