Now showing items 1-4 of 4

    • Extended VHE γ-ray emission towards SGR1806-20, LBV 1806-20, and stellar cluster Cl 1806-20 

      Abdalla, H.; Barnard, M.; Böttcher, M.; Davids, I.D.; Garrigoux, T.; Ivascenko, A.; Krüger, P.P.; Pekeur, N.W.; Seyffert, A.S.; Spanier, F.; Sushch, I.; Van der Walt, D.J.; Venter, C.; Wadiasingh, Z.; H.E.S.S. Collaboration (EDP Sciences, 2018)
      Using the High Energy Spectroscopic System (H.E.S.S.) telescopes we have discovered a steady and extended very high-energy (VHE) γ-ray source towards the luminous blue variable candidate LBV 1806−20, massive stellar cluster ...
    • Opacities for photon splitting and pair creation in neutron star magnetospheres 

      Hu, Kun; Wadiasingh, Zorawar; Baring, Matthew G.; Harding, Alice K. (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 ...
    • Resonant inverse Compton scattering spectra from highly magnetized neutron stars 

      Wadiasingh, Zorawar; Baring, Matthew G.; Gonthier, Peter L.; Harding, Alice K. (IOP Publishing, 2018)
      Hard, nonthermal, persistent pulsed X-ray emission extending between 10 and ~150 keV has been observed in nearly 10 magnetars. For inner-magnetospheric models of such emission, resonant inverse Compton scattering of soft ...
    • Revival of the Magnetar PSR J1622-4950: observations with MeerKAT, Parkes, XMM-Newton, Swift, Chandra, and NuSTAR 

      Camilo, F.; Oozeer, N.; Scholz, P.; Serylak, M.; Buchner, S. (IOP Publishing, 2018)
      New radio (MeerKAT and Parkes) and X-ray (XMM-Newton, Swift, Chandra, and NuSTAR) observations of PSR J1622–4950 indicate that the magnetar, in a quiescent state since at least early 2015, reactivated between 2017 March ...