On the Rotationally Driven Pevatron in the Center of the Milky Way

Journal Article · Wed Feb 01 00:00:00 EST 2017 · Astrophysical Journal

DOI:https://doi.org/10.3847/1538-4357/835/2/164· OSTI ID:22663947

Osmanov, Z ^[1]; Mahajan, S ^[2]; Machabeli, G ^[3]

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1. School of Physics, Free University of Tbilisi, 0183-Tbilisi, Georgia (United States)
2. Institute for Fusion Studies, The University of Texas at Austin, Austin, TX 78712 (United States)
3. Centre for Theoretical Astrophysics, ITP, Ilia State University, 0162 Tbilisi, Georgia (United States)

Based on the collective linear and nonlinear processes in a magnetized plasma surrounding the black hole at the Galactic center (GC), an acceleration mechanism is proposed to explain the recent detection/discovery of PeV protons. In a two-stage process, the gravitation energy is first converted to the electrical energy in fast-growing Langmuir waves, and then the electrical energy is transformed to the particle kinetic energy through Landau damping of waves. It is shown that, for the characteristic parameters of GC plasma, proton energy can be boosted up to 5 PeV.

• OSTI ID: 22663947
• Journal Information: Astrophysical Journal, Vol. 835, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ACCELERATION
BLACK HOLES
COSMIC RADIATION
DETECTION
GALAXY NUCLEI
GRAVITATION
KINETIC ENERGY
LANDAU DAMPING
MILKY WAY
NONLINEAR PROBLEMS
PEV RANGE
PLASMA
PROTONS