Browsing Research Output by Subject "Magnetic fields"
Now showing items 1-9 of 9
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Constraining the emission geometry and mass of the white dwarf pulsar AR Sco using the rotating vector model
(IOP Publishing, 2019)We apply the standard radio pulsar rotating vector model to the white dwarf (WD) pulsar AR Sco's optical polarization position angle swings folded at the WD's spin period as obtained by Buckley et al. Owing to the long ... -
Early science with the Karoo Array Telescope: a mini-halo candidate in galaxy cluster Abell 3667
(Oxford University Press, 2015)Abell 3667 is among the most well-studied galaxy clusters in the Southern hemisphere. It is known to host two giant radio relics and a head–tail radio galaxy as the brightest cluster galaxy. Recent work has suggested the ... -
Exploring the acceleration mechanisms for particle injection and power-law formation during transrelativistic magnetic reconnection
(IOP Publishing, 2020)Magnetic reconnection in the relativistic and transrelativistic regimes is able to accelerate particles to hard power-law energy spectra f ∝ γ −p (approaching p = 1). The underlying acceleration mechanism that determines ... -
Hard spectral tails in magnetars
(Cambridge Univ Press, 2017)Pulsed non-thermal quiescent emission between 10 keV and around 150 keV has been observed in ~10 magnetars. For inner magnetospheric models of such hard X-ray signals, resonant Compton upscattering of soft thermal photons ... -
Impact of ordered and disordered magnetic fields on multiwavelength emission of blazars
(IOP Publishing, 2020)We present a detailed analysis of the effects of magnetic field topology on the spectral energy distribution (SED) and spectral variability patterns (SVPs) of blazars. In order to study these effects, we have extended our ... -
The modulation of galactic cosmic-ray electrons in the heliosheath
(IOP Publishing, 2010)Voyager 1 has observed strong increases in the intensities of 2-160 MeV electrons since crossing the termination shock of the heliosphere in 2004 December. Before this time these intensities were submerged below the detector ... -
Opacities for photon splitting and pair creation in neutron star magnetospheres
(Oxford Univ Press, 2019)Over the last four decades, persistent and flaring emission of magnetars observed by various telescopes has provided us with a suite of light curves and spectra in soft and hard X-rays, with no emission yet detected above ... -
Scaling of relativistic shear flows with the bulk Lorentz factor
(IOP Publishing, 2018)We compare Particle-in-cell simulation results of relativistic electron–ion shear flows with different bulk Lorentz factors, and discuss their implications for spine-sheath models of blazar versus gamma-ray burst (GRB) ... -
Toward a greater understanding of the reduction of drift coefficients in the presence of turbulence
(IOP Publishing, 2017)Drift effects play a significant role in the transport of charged particles in the heliosphere. A turbulent magnetic field is also known to reduce the effects of particle drifts. The exact nature of this reduction, however, ...