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Campus Now

Midsummer Issue (Jul.)

NEWS REPORT

Listed on the website of NASA

Discovery of new types of gamma-ray galaxy by using a fermi gamma-ray space telescope

Gamma-ray radiation from the center of the galaxy is detected for the first time.

Through international joint research including institutions such as America's NASA, a research group composed of Waseda University Assistant Professor Jun Kataoka (Faculty of Science and Engineering), Hiroshima University, JAXA, the Tokyo Institute of Technology, Tokyo University and Nagoya University has discovered 2 new types of gamma-ray galaxies. Gamma-rays are a type of electromagnetic wave with an extremely short wavelength. The rays possess a high amount of energy that is approximately 1 billion times the light which is visible to the human eye. Until now, it was difficult to perform space observation using this kind of high energy. However, thanks to the performance of the fermi gamma-ray space telescope which was launched in June of last year, the form of a violently moving universe is quickly becoming apparent. The new gamma-ray galaxies are celestial bodies that were discovered as part of a solar examination that was several dozen times deeper than conventional examinations.

It is thought that a black hole that is more than 1 million times larger than our sun exists at the center of many galaxies, including our own galaxy. The fermi gamma-ray space telescope has opened a new window in astronomy through the discovery of new types of gamma-ray galaxies.