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Radio galaxies are galaxies dominated by radio emissions from jets stemming from SMBHs. AGN are the small, dense and luminous components of the centres of galaxies as represented in figure 3 and figure 4. The majority of their energy is derived from gravitational potential energy as opposed to nuclear sources within stars. The core of an AGN emits synchrotron radiation emitted through particle acceleration and collimation into a double lobed structure. These are typical traits of radio galaxies. AGN also have a pair of jets of material ejected from their core. The structure of a radio source is also determined by the interaction of its energetic jets with ionized gas which surround the host galaxy. (Krawczynski et al, 2013) also observes that the black holes in AGN accrete matter and convert the gravitational energy of the accreted matter (and possibly also the rotational energy of the black hole) into mechanical and electromagnetic energy. We also have that inside the accretion disk, a portion of the gravitational energy of the accreted material is converted to heat and electromagnetic radiation which is then radiated away by the accretion disk. The jets are formed from a portion of the material processed through the accretion disk which escapes the accretion system as collimated and uncollimated outflows. Jet plasma velocity can be denoted by v where v = β_jet c ≈ c ,and c represents the speed of light. Γ_j The bulk Lorentz factor of the plasma is given by Γ_(jet ) = (1-〖β_jet〗^2 )^(-1/2) . Emissions from the jets can be red or blue-shifted as a result of the relativistic Doppler factor δ_jet= 1/(Γ_j (1- β_jet⁡(cos⁡θ )))  Where θ being the angle between the jet axis and the line of sight as measured in the observer frame. (Krawczynski et al, 2013). The lobes as seen in figure 5 develop when the jets are stopped by pressure from the gas surrounding the host galaxy. The lobe structure is fairly symmetrical when viewed closer to the nucleus of the galaxy.  (Intro to RA) states that the lobes derive energy from the jets, as the jets dissipate into the lobes and the total energy in the lobes can reach up to 10-53J.  Released gravitational energy of stellar material falling into a supermassive black hole is believed to be the main source of the galaxy’s energy. (Mo et al, 2011) theorizes that almost all spheroidal galaxy components (i.e., ellipticals and bulges) have a SMBH with a mass which correlated with that of the host galaxy, suggesting that the formation of SMBHs is related to the formation of their host galaxies.  In AGN Bremsstrahlung, Synchrotron and Compton emission processes are most common. Synchrotron radiation accounts for much of the radio emissions in AGN. In AGN the jets produce synchrotron radiation due to near-relativistic electrons spiralling around magnetic field lines.  This process produces in polarised radiation in the direction of propagation of the emitting electron. The torus emits unpolarised thermal radiation. It has been theorised that the ionised disk associated with the torus produces a varying magnetic field across its surface. The varying magnetic field then is induces a large electric field which accelerates particles to relativistic speeds. These particles spiral along the magnetic field lines and producing synchrotron radiation. (http://www.jeffstanger.net/Astronomy/emissionprocesses.html - Jeff Stanger ).  Within AGN the radiation is emitted by a variety of sources, where some of the sources are thermal and other non-thermal. (B.F Burke and F Graham-Smith) states that the relative strength of these sources depends on the orientation of the AGN. The overall spectrum however, can be represented by a simple power law.