QED can explain the non-thermal emission from SGRs and AXPs : Variability
| dc.creator | Heyl, Jeremy S. | |
| dc.date | 2006-08-25 | |
| dc.date.accessioned | 2026-07-07T10:39:52Z | |
| dc.date.available | 2026-07-07T10:39:52Z | |
| dc.description | Owing to effects arising from quantum electrodynamics (QED), magnetohydrodynamical fast modes of sufficient strength will break down to form electron-positron pairs while traversing the magnetospheres of strongly magnetised neutron stars. The bulk of the energy of the fast mode fuels the development of an electron-positron fireball. However, a small, but potentially observable, fraction of the energy ($\sim 10^{33}$ ergs) can generate a non-thermal distribution of electrons and positrons far from the star. This paper examines the cooling and radiative output of these particles. Small-scale waves may produce only the non-thermal emission. The properties of this non-thermal emission in the absence of a fireball match those of the quiescent, non-thermal radiation recently observed non-thermal emission from several anomalous X-ray pulsars and soft-gamma repeaters. Initial estimates of the emission as a function of angle indicate that the non-thermal emission should be beamed and therefore one would expect this emission to be pulsed as well. According to this model the pulsation of the non-thermal emission should be between 90 and 180 degrees out of phase from the thermal emission from the stellar surface. | |
| dc.description | 7 pages, 5 figures, to appear in the proceedings of the conference "Isolated Neutron Stars: from the Interior to the Surface" (April 2006, London), eds. D. Page, R. Turolla, & S. Zane, Astrophysics & Space Science | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0608565 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0608565 | |
| dc.identifier | Astrophys.SpaceSci.308:101-107,2007 | |
| dc.identifier | doi:10.1007/s10509-007-9325-y | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/181183 | |
| dc.subject | Astrophysics | |
| dc.title | QED can explain the non-thermal emission from SGRs and AXPs : Variability | |
| dc.type | text |