1. THE 2010 M 87 VHE FLARE AND ITS ORIGIN: THE MULTI-WAVELENGTH PICTURE
- Author
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D. E. Harris, M. Giroletti, R. C. Walker, L. Stawarz, W. McConville, P. Colin, C. M. Hui, D. Mazin, I. A. Steele, M. Beilicke, and Martin Raue
- Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,European VLBI Network ,Active galactic nucleus ,010504 meteorology & atmospheric sciences ,Radio galaxy ,Astrophysics::High Energy Astrophysical Phenomena ,jets [galaxies] ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,7. Clean energy ,01 natural sciences ,law.invention ,Astrophysical jet ,law ,0103 physical sciences ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics ,Very Long Baseline Array ,0105 earth and related environmental sciences ,Physics ,Supermassive black hole ,observations [gamma rays] ,individual (M 87) [galaxies] ,non-thermal [radiation mechanisms] ,Black hole ,13. Climate action ,active [galaxies] ,nuclei ,Astrophysics - Cosmology and Nongalactic Astrophysics ,Flare - Abstract
The giant radio galaxy M 87, with its proximity (16 Mpc) and its very massive black hole ((3 - 6) \times 10^9 M_solar), provides a unique laboratory to investigate very high energy (E>100 GeV; VHE) gamma-ray emission from active galactic nuclei and, thereby, probe particle acceleration to relativistic energies near supermassive black holes (SMBH) and in relativistic jets. M 87 has been established as a VHE gamma-ray emitter since 2005. The VHE gamma-ray emission displays strong variability on timescales as short as a day. In 2008, a rise in the 43 GHz Very Long Baseline Array (VLBA) radio emission of the innermost region (core; extension of < 100 Rs ; Schwarzschild radii) was found to coincide with a flaring activity at VHE. This had been interpreted as a strong indication that the VHE emission is produced in the direct vicinity of the SMBH. In 2010 a flare at VHE was again detected triggering further multi-wavelength (MWL) observations with the VLBA, Chandra, and other instruments. At the same time, M 87 was also observed with the Fermi-LAT telescope at MeV/GeV energies, the European VLBI Network (EVN), and the Liverpool Telescope (LT). Here, preliminary results from the 2010 campaign will be reported., 6 pages, 2 figures; Procceedings of the workshop "High Energy Phenomena in Relativistic Outflows III" (HEPRO III), Barcelona, June 27 - July 1, 2011
- Published
- 2012