Right Ascension           Declination
Geminga SN 437       06hr 33min 54sec     17deg 46min 12.9sec
Crab PSR0531 +21   05hr 34min 32sec     22deg 00min 52.0sec

See A Ritzian Interpretation of Variable Stars for background material on the astrophysical hypothesis being modeled on this web page.

The light curve of the Geminga gamma-ray pulsar is double-peaked (with an interior saddle/bridge). [Erroneous sentence about the proximity of Geminga to the Crab pulsar has been removed.] It's repetition period is about 1/4 second (0.237 sec) and at least one neutron star is thought to be involved in the production of the pulse train. The following web sources provide light curves of Geminga from different platforms.

      Gamma-Ray Pulsar Light Curves NASA Compton Gamma-Ray Observatory.
      Lightcurve of Geminga NASA HEASARC (EGRET).

Here is the NASA/GSFC EGRET lightcurve of Geminga, extracted from the later source.

Credit: P. Sreekumar (NASA/GSFC)

This page displays computer modeling printouts for a Ritzian relativity process which may be responsible for Geminga's unique light curve.

The following computer generated printouts show light and apparent radial velocity curves for a single visible component of a close binary star system (not the Geminga system) with an extinction distance of 1.5 times the Ritz-de Sitter overtaking distance (Lo). (An extinction distance on the order of 2.5 Lo will be needed to more properly approximate the Geminga light curve.)

The menu-driven computer program that produced the graphs below can be run online by clicking on the following link. [Added 20 Feb 2006.]

The orbit being modeled has an eccentricity of 0.2 and print-outs are made for perihelion angles decremented in 90 degree steps. (Orbit eccentricities are exaggerated in the figures.)

Recommended reading.

[pdf] GLAST Exploring - Exploring Nature's Highest Energy Processes with the Gamma-ray large Area Space Telescope.