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Radio Imaging of the Very-High-Energy gamma-Ray Emission Region in the Central Engine of a Radio Galaxy
Vise andre og tillknytning
2009 (engelsk)Inngår i: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 325, nr 5939, s. 444-448Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The accretion of matter onto a massive black hole is believed to feed the relativistic plasma jets found in many active galactic nuclei (AGN). Although some AGN accelerate particles to energies exceeding 10(12) electron volts and are bright sources of very-high-energy (VHE) gamma-ray emission, it is not yet known where the VHE emission originates. Here we report on radio and VHE observations of the radio galaxy Messier 87, revealing a period of extremely strong VHE gamma-ray flares accompanied by a strong increase of the radio flux from its nucleus. These results imply that charged particles are accelerated to very high energies in the immediate vicinity of the black hole.

sted, utgiver, år, opplag, sider
2009. Vol. 325, nr 5939, s. 444-448
HSV kategori
Forskningsprogram
Fysik, Astropartikelfysik
Identifikatorer
URN: urn:nbn:se:lnu:diva-30263DOI: 10.1126/science.1175406ISI: 000268255100048OAI: oai:DiVA.org:lnu-30263DiVA, id: diva2:705997
Tilgjengelig fra: 2014-03-18 Laget: 2013-11-08 Sist oppdatert: 2017-12-05bibliografisk kontrollert

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