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Title: Radio Imaging of the Very-High-Energy γ-Ray Emission Region in the Central Engine of a Radio Galaxy
Author: MAGIC , VERITAS, HESS Collaboration
Ribó Gomis, Marc
Bosch i Ramon, Valentí
Paredes i Poy, Josep Maria
Keywords: Forats negres (Astronomia)
Nucli galàctic actiu
Jets (Astrofísica)
Black holes (Astronomy)
Active galactic nuclei
Radio astronomy
Astrophysical jets
Issue Date: 2009
Publisher: American Association for the Advancement of Science
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.
Note: Versió postprint del document publicat a:
It is part of: Science, 2009, vol. 325, num. 5939, p. 444-448
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ISSN: 0036-8075
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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