<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mastichiadis, Apostolos</style></author><author><style face="normal" font="default" size="100%">Florou, Ioulia</style></author><author><style face="normal" font="default" size="100%">Kefala, Elina</style></author><author><style face="normal" font="default" size="100%">Boula, Stella S.</style></author><author><style face="normal" font="default" size="100%">Petropoulou, Maria</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A roadmap to hadronic supercriticalities: a comprehensive study of the parameter space for high-energy astrophysical sources</style></title><short-title><style face="normal" font="default" size="100%">Monthly Notices of the Royal Astronomical Society</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Astrophysics - High Energy Astrophysical Phenomena</style></keyword><keyword><style  face="normal" font="default" size="100%">galaxies: active</style></keyword><keyword><style  face="normal" font="default" size="100%">gamma-ray burst: general</style></keyword><keyword><style  face="normal" font="default" size="100%">INSTABILITIES</style></keyword><keyword><style  face="normal" font="default" size="100%">radiation mechanisms: non-thermal</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2020</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2020/06/1</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://ui.adsabs.harvard.edu/abs/2020MNRAS.495.2458M</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">OUP</style></publisher><volume><style face="normal" font="default" size="100%">495</style></volume><pages><style face="normal" font="default" size="100%">2458 - 2474</style></pages><isbn><style face="normal" font="default" size="100%">0035-8711</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Hadronic supercriticalities are radiative instabilities that appear when large amounts of energy are stored in relativistic protons. When the proton energy density exceeds some critical value, a runaway process is initiated resulting in the explosive transfer of the proton energy into electron-positron pairs and radiation. The runaway also leads to an increase of the radiative efficiency, namely the ratio of the photon luminosity to the injected proton luminosity. We perform a comprehensive study of the parameter space by investigating the onset of hadronic supercriticalities for a wide range of source parameters (I.e. magnetic field strengths of 1 G-100 kG and radii of 10&lt;SUP&gt;11&lt;/SUP&gt;-10&lt;SUP&gt;16&lt;/SUP&gt; cm) and maximum proton Lorentz factors (10&lt;SUP&gt;3&lt;/SUP&gt;-10&lt;SUP&gt;9&lt;/SUP&gt;). We show that supercriticalities are possible for the whole range of source parameters related to compact astrophysical sources, like gamma-ray bursts and cores and jets of active galactic nuclei. We also provide an in-depth look at the physical mechanisms of hadronic supercriticalities and show that magnetized relativistic plasmas are excellent examples of non-linear dynamical systems in high-energy astrophysics.</style></abstract></record></records></xml>