Magnetospheric Structure and Non-Thermal Emission of AXPs and SGRs
| dc.creator | Lyutikov, M. | |
| dc.creator | Thompson, C. | |
| dc.creator | Kulkarni, S. R. | |
| dc.date | 2001-11-16 | |
| dc.date.accessioned | 2026-07-07T02:01:24Z | |
| dc.date.available | 2026-07-07T02:01:24Z | |
| dc.description | In the framework of the magnetar model for the Soft Gamma Repeaters and Anomalous X-ray Pulsars, we consider the structure of neutron star magnetospheres threaded by large-scale electrical currents. We construct self-similar, force-free equilibria under the assumption of axisymmetry and a power law dependence of magnetic field on radius, ${\bf B} \propto r^{-(2+p)}$. A large-scale twist of the field lines softens the radial dependence to $p < 1$, thereby accelerating the spindown torque with respect to a vacuum dipole. A magnetosphere with a strong twist ($B_ϕ/B_θ= O(1)$ at the equator) has an optical depth $\sim 1$ to resonant cyclotron scattering, independent of frequency (radius), surface magnetic field strength, or the charge/mass ratio of the scattering charge. We investigate the effects of the resonant Compton scattering by the charge carriers (both electrons and ions) on the emergent X-ray spectra and pulse profiles. | |
| dc.description | 4 pages, 2 figures, PSR/SNR Workshop ``Neutron Stars in Supernova Remnants'' | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0111319 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0111319 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/3732 | |
| dc.subject | Astrophysics | |
| dc.title | Magnetospheric Structure and Non-Thermal Emission of AXPs and SGRs | |
| dc.type | text |