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Article

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Accepted version

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2009

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/44499

Radio Imaging of the Very-High-Energy γ-Ray Emission Region in the Central Engine of a Radio Galaxy

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http://dx.doi.org/10.1126/science.1175406

Abstract

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 1012 electron volts and are bright sources of very-high-energy (VHE) γ-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 γ-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.

Subject

Forats negres (Astronomia), Nucli galàctic actiu, Radioastronomia, Jets (Astrofísica)

Subject (English)

Black holes (Astronomy), Active galactic nuclei, Radio astronomy, Astrophysical jets

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

MAGIC Collaboration, et al. Radio Imaging of the Very-High-Energy γ-Ray Emission Region in the Central Engine of a Radio Galaxy. Science. 2009. Vol. 325, num. 5939, pags. 444-448. ISSN 0036-8075. [consulted: 12 of August of 2026]. Available at: https://hdl.handle.net/2445/44499

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