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dc.contributor.authorKonigl, A.
dc.contributor.authorGranot, J.
dc.identifier.citationKonigl , A & Granot , J 2008 , ' Stability of radiative relativistic shocks to global oscillations ' , International Journal of Modern Physics D , vol. 17 , no. 10 , pp. 1777-1786 .
dc.identifier.otherPURE: 348061
dc.identifier.otherPURE UUID: 6bb465cb-9411-4469-9409-3b9713c1ff54
dc.identifier.otherWOS: 000261167900014
dc.identifier.otherScopus: 56749105135
dc.descriptionOriginal article can be found at : Copyright World Scientific [Full text of this article is not available in the UHRA]
dc.description.abstractThermally emitting, radiative, Newtonian shocks exhibit a global oscillatory instability. The luminosity variations that accompany such oscillations raise the possibility that, if relativistic shocks that emit nonthermal (synchrotron and inverse-Compton) radiation are also subject to such an instability, this could be relevant to the interpretation of certain flares observed in relativistic jet sources associated with AGNs and GRBs. A linear stability analysis, using the equations of special-relativistic MHD and accounting for both the energy and the momentum carried by the radiation, has, however, revealed no unstable modes for physically plausible parameter values. The likely explanation is that, even though synchrotron cooling gives rise to a local radiative instability, the dependence on the magnetic field amplitude is not strong enough to counter the stabilizing effect of enhanced magnetic pressure, due to cooling-induced compression, on the global behavior of the shock. Numerical simulations are under way to ascertain that this conclusion continues to hold also in the nonlinear regime.en
dc.relation.ispartofInternational Journal of Modern Physics D
dc.subjectRelativistic shocks
dc.subjectradiative instability
dc.subjectactive galactic nuclei
dc.subjectgamma-ray bursts
dc.titleStability of radiative relativistic shocks to global oscillationsen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.typeJournal Article/Review

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