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Commit 6ca899d4 authored by Leo Pound Singer's avatar Leo Pound Singer

Link to HEALPix glossary entry from first occurrence of term on every page

The glossary entry points to the official HEALPix web site.

Addresses #145.
parent f1a7f19b
......@@ -22,8 +22,8 @@ and calculates the posterior probability distribution over the sky location and
distance of the source by coherently modeling the response of the
gravitational-wave detector network. It explores the parameter space using
Gaussian quadrature, lookup tables, and sampling on an adaptively refined
HEALPix grid. The sky localization takes tens of seconds and is included in the
preliminary alert.
:term:`HEALPix` grid. The sky localization takes tens of seconds and is
included in the preliminary alert.
**LALInference** [#LALInference]_ is the full CBC parameter estimation
algorithm. It explores a greatly expanded parameter space including sky
......
......@@ -54,7 +54,7 @@ Glossary
HEALPix
Hierarchical Equal Area isoLatitude Pixelation, a scheme for indexing
positions on the unit sphere.
positions on the unit sphere. See https://healpix.sourceforge.io.
HEN
High Energy Neutrino, particularly in the context of multi-messenger
......
Multi-Order Sky Maps (For Advanced Users)
=========================================
For most events, LIGO/Virgo distributes both the standard HEALPix format with
the file extension ``.fits.gz``, as well as an experimental multi-resolution
HEALPix format, distinguished by the file extension ``.multiorder.fits``.
For most events, LIGO/Virgo distributes both the standard :term:`HEALPix`
format with the file extension ``.fits.gz``, as well as an experimental
multi-resolution HEALPix format, distinguished by the file extension
``.multiorder.fits``.
What Problem Do Multi-Resolution Sky Maps Solve?
------------------------------------------------
......
......@@ -13,9 +13,9 @@ need to import a few extra Python modules::
import astropy.units as u
The LIGO/Virgo probability sky maps are always in equatorial coordinates. Once
we have looked up the coordinates of the HEALPix pixels, we will use Astropy to
transform those coordinates to a horizontal (altitude–azimuth) frame for a
particular site on the Earth at a particular time. Then we can quickly
we have looked up the coordinates of the :term:`HEALPix` pixels, we will use
Astropy to transform those coordinates to a horizontal (altitude–azimuth) frame
for a particular site on the Earth at a particular time. Then we can quickly
determine which pixels are visible from that site at that time, and integrate
(sum) the probability contained in those pixels.
......
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