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Origin of nonthermal emission from the Fermi bubbles and mechanisms of particle acceleration there

Published online by Cambridge University Press:  22 May 2014

V. A. Dogiel ,
K.-S. Cheng ,
D. O. Chernyshov  and
C.-M. Ko
V. A. Dogiel
Affiliation:
P. N. Lebedev Institute of Physics, Leninskii pr. 53, 119991 Moscow, Russia email: dogiel@lpi.ru, chernyshov@lpi.ru
K.-S. Cheng
Affiliation:
Department of Physics, University of Hong Kong, Pokfulam Road, Hong Kong, China email: hrspksc@hku.hk
D. O. Chernyshov
Affiliation:
P. N. Lebedev Institute of Physics, Leninskii pr. 53, 119991 Moscow, Russia email: dogiel@lpi.ru, chernyshov@lpi.ru
C.-M. Ko
Affiliation:
Institute of Astronomy, National Central University, Chung-Li 32054, Taiwan email: cmko@gm.astro.ncu.edu.tw
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The discovery of the two giant γ-ray lobes (Fermi bubbles) in the Galactic center (see Dobler et al. 2010 and Su et al. 2010) was one of the most impressive events of the last few years in astrophysics. However, some indications on giant structures in the Galactic center (GC) were observed several years before by WMAP in the radio frequency range between 23 and 33 MHz (Finkbeiner 2004), and by ROSAT in hard X-rays (Bland-Hawthorn & Cohen 2003). Recent observations performed by the Planck Collaboration (Ade et al. 2012) found also lobes in the microwave range which spatially coincided the Fermi bubbles that indicated on the common origin of these phenomena.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S303: The Galactic Center: Feeding and Feedback in a Normal Galactic Nucleus , October 2013 , pp. 399 - 402
Copyright
Copyright © International Astronomical Union 2014 

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