W.R. Webber

Recognize the background in the picture above? It is actually solar protons!

Click here to listen to a clip of "Heaven and Hell, part 1" from the soundtrack; The Music Of Cosmos, by Carl Sagan.

Dr. Webber has cosmic ray experiments on both the Pioneer 10 and Voyager 1 & 2 spacecraft. These spacecraft are the first manmade objects to leave the solar system.

A replica of the plaque aboard Pioneer 10 intended to show to beings of other galaxies when, where and by whom it was launched is shown here.

Click Here for more information about Cosmic Rays

Where are these spacecraft now? A map of the heliosphere showing the location of the spacecraft is shown below.

The effects of 11 year solar cycle on cosmic rays

Individual Spacecraft Plots, Data and Links to Information Pages.

Research Interests

Study of Cosmic Rays in the Heliosphere using the Pioneer and Voyager Spacecraft, (See my latest data).

H and He isotope studies and Anti-proton measurements - I MAX balloon experiment.

Measurement of nuclear cross sections using liquid H targets at SATURNE accelerator in France and Big Bang Nucleosynthesis.

The far IR - radio correlation of galaxies.

Monte Carlo Simulations of Cosmic Ray Nucleons and Electrons in the Galaxy.

Studies of Cosmic Ray Elemental and Isotopic Composition on Voyager.

Gamma-Ray Distribution in Galaxy and Gamma Ray Bursts.

Recent Publications

Please note that the text version available for some of the publications may have slight problems with special characters and do not contain the figures at this time.

Monte Carlo Calculations of Cosmic Ray Electron and Nuclei Diffusion in the Galaxy - A comparison of Data and Predictions, by W.R. Webber and J.M. Rockstroh 1996.

An Estimate of the Location of the Modulation Boundary for E>70 MeV Galactic Cosmic Rays Using Voyager and Pioneer Spacecraft Data, by J.A. Lockwood and W.R. Webber, Astrophysical Journal, 442:852-860, April 1995.

Measurement of 0.25 - 3.2 GeV Antiprotons in the Cosmic Radiation, by J.W. Mitchell, et. al., 1995

Pioneer 10 and Voyager 1 Observations of Anomalous Cosmic-Ray Hydrogen in the Outer Heliosphere, by F.B. McDonald, A. Lukasiak and W.R. Webber, Astrophysical Journal, 446:L101-L104, June 1995.

Comparison of FIR and 20 cm radio continuum emission with 1' resolution in 8 edge on and 2 face on galaxies - some new ideas regarding the global FIR-radio correlation, by W.R. Webber and B. Heikkila.

New High Statistical - High Resolution Measurements of the Cosmic Ray CNO Isotopes From a 17 Year Study Using the Voyager 1 and 2 Spacecraft, by W.R. Webber, A. Lukasiak, F.B. McDonald and P. Ferrando, The Astrophysical Journal, 447:000-000, January 1996.

Gamma Ray Bursts Localized to Within 0.25 Square Degree: A Correlation with Extragalactic Objects, by W.R. Webber, T.E. Harrison, B.J. McNamara, and A. Lopez, Astrophysical Journal, Volume 110, Number 2, August 1995.

Updated 07 February, 2000

<bwebber@nmsu.edu>