ESA’s gamma-ray satellite, Integral, is fully operational. Today Integral’s first ground-breaking images of the high-energy Universe were presented in Paris, France. Astronomers call such initial ...

Integral’s latest survey of the gamma-ray universe continues to change the way astronomers think of the high-energy cosmos. With over seventy percent of the sky now observed by Integral, astronomers ...

Today, the European Space Agency's gamma-ray telescope ends its observations. During its 22 years in space, Integral has reshaped our view of the most dramatic events in the universe. The high-energy ...

This appendix serves as an introduction to the gamma and beta functions. These are special functions that find wide applications in science and engineering. They are also used in probability and in ...

A number of functions, somewhat more complex in nature than the standard elementary functions, arise from the mathematical analysis of many systems in the sciences. These include the gamma, beta, and ...