High-Energy Aspects of Astrophysical Jets

Abstract

Various aspects of the high-energy emission from relativistic jets associated wi th compact astrophysical systems are reviewed. The main leptonic and hadronic processes responsible for the production of high-energy $\gamma$-rays, very-high energy neutrinos and ultra-high energy cosmic rays are discussed. Relations between the $\gamma \gamma$ pair production and photomeson production opacities are derived, and their consequences for the relative emission of $\gamma$-rays and neutrinos are examined. The scaling of the size and location of the various emission zones and other quantities with black hole mass and dimensionless luminosity is elucidated. The results are applied to individual classes of objects, including blazars, microquasars and gamma-ray bursts. It is concluded that if baryons are present in the jet at sufficient quantities, then under optimal conditions most systems exhibiting relativistic jets may be detectable by upcoming neutrino telescopes. An exception is the class of TeV blazars, for which $\gamma$-ray observations imply neutrino yields well below detection limit.

Invited review, references added, typos corrected, some changes made

References in corpus (5)

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• On the Origin of Rapid Flares in TeV Blazars
• Jet Parameters in the Black-Hole X-Ray Binary MAXI J1820+070
• LS I +61 303 as a potential neutrino source on the light of MAGIC results
• The minimum jet power and equipartition
• Exploring the connection between radio and GeV-TeV gamma-ray emission in the 1FHL and 2FHL AGN samples
• On the nature of the AGILE galactic transient sources
• Collimation and Radiative Deceleration of Jets in TeV AGNs
• Six-year Optical Monitoring of BL Lacertae Object 1ES 0806+52.4
• Radio Jet Properties of the Flaring Gamma-Ray Blazar PKS 0346-27