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Electrodynamics of Magnetars: Implications for the Persistent X-Ray Emission and Spin-down of the Soft Gamma Repeaters and Anomalous X-Ray Pulsars
We consider the structure of neutron star magnetospheres threaded by large-scale electrical currents and the effect of resonant Compton scattering by the charge carriers (both electrons and ions) onExpand
Detection of Pulsed Gamma Rays Above 100 GeV from the Crab Pulsar
This detection constrains the mechanism and emission region of gamma-ray radiation in the pulsar’s magnetosphere and requires that these gamma rays be produced more than 10 stellar radii from the neutron star. Expand
The Pulsar Wind Nebula in G11.2–0.3
We present an X-ray and radio study of the wind nebula surrounding the central pulsar PSR J1811-1925 in the supernova remnant G11.2-0.3. Using high-resolution data obtained with the Chandra X-RayExpand
Resonant cyclotron scattering and Comptonization in neutron star magnetospheres
Resonant cyclotron scattering of the surface radiation in the magnetospheres of neutron stars may considerably modify the emergent spectra and impede efforts to constrain neutron star properties.Expand
Explosive reconnection in magnetars
The X-ray activity of anomalous X-ray pulsars and soft γ-ray repeaters may result from the heating of their magnetic corona by direct currents dissipated by magnetic reconnection. We investigate theExpand
Magnetar giant flares and afterglows as relativistic magnetized explosions
We propose that giant flares on soft γ-ray repeaters produce relativistic, strongly magnetized, weakly baryon-loaded magnetic clouds, somewhat analogous to solar coronal mass ejection (CME) events.Expand
Polarization and structure of relativistic parsec-scale AGN jets
We consider the polarization properties of optically thin synchrotron radiation emitted by relativistically moving electron-positron jets carrying large-scale helical magnetic fields. In our model,Expand
The electromagnetic model of gamma-ray bursts
The electromagnetic model (EMM) of gamma-ray bursts (GRBs) and a contrast of its main properties and predictions with the hydrodynamic fireball model (FBM) and its magnetohydrodynamical extension areExpand
We observed the Crab pulsar with the 43?m telescope in Green Bank, WV over a timespan of 15 months. In total we obtained 100 hr of data at 1.2?GHz and seven hours at 330?MHz, resulting in a sample ofExpand
Did Swift measure gamma-ray burst prompt emission radii?
The Swift X-Ray Telescope often observes a rapidly decaying X-ray emission stretching to as long as t∼ 103 s after a conventional prompt phase. This component is most likely due to a prompt emissionExpand