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Fakultät Physik

MAGIC telescopes observe stellar explosion

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The binary star system RS Ophiuchi: Matter flows from the red giant onto the white dwarf. The newly added stellar envelopes explode in a bright nova about every 15 years. © superbossa.com​/​MPP
The binary star system RS Ophiuchi: Matter flows from the red giant onto the white dwarf. The newly added stellar envelopes explode in a bright nova about every 15 years.

The MAGIC telescopes have observed the nova RS Ophiuchi shining brightly in gamma rays at extremely high energy. The Gamma rays emanate from protons that are accelerated to very high energies in the shock front following the explosion. This suggests that novae are also a source of the ubiquitous cosmic radiation in the universe which consists mainly of protons rich in energy, which race through space at almost the speed of light. Scientists from Dortmund are involved in this result by developing methods for data analysis and simulation. The work was published in Nature Astronomy.

https://www.mpg.de/18529322/0412-phys-nova-outbursts-a-new-source-for-cosmic-rays-151955-x