6 papers
Resonant Cyclotron Radiation Transfer Model Fits to Spectra from Gamma-Ray Burst GRB870303
P. E. Freeman, D. Q. Lamb, J. C. L. Wang +5
We demonstrate that models of resonant cyclotron radiation transfer in a strong field (i.e. cyclotron scattering) can account for spectral lines seen at two epochs, denoted S1 and…
Evidence of Fermi acceleration of Lyman alpha in the Radio Galaxy 1243+036
L. Binette, B. Joguet, J. C. L. Wang
The high redshift radiogalaxy 1243+036 (z=3.6) presents an asymmetric Lyman alpha profile of FWHM 1550 km/s as measured by van Ojik et al. We propose that the blue asymmetry in the…
Evidence for magnetic field decay in RX J0720.4-3125
John C. L. Wang
The unidentified X-ray source RX J0720.4-3125 is a candidate isolated neutron star showing evidence for pulsed emission with an 8.39 s period and a spectrum consistent with a black…
Effects of the Geometry of the Line-Forming Region on the Properties of Cyclotron Resonant Scattering Lines
Michael Isenberg, D. Q. Lamb, John C. L. Wang
We use a Monte Carlo radiative transfer code to examine the dependence of the properties of cyclotron resonant scattering lines on the spatial geometry and the optical depth of the…
Cyclotron Line Formation in a Relativistic Outflow
Michael Isenberg, D. Q. Lamb, John C. L. Wang
There is mounting evidence that, if gamma-ray bursters are Galactic in origin, they are located in a Galactic corona at distances greater than 100 kpc. This has created a need to e…
A Potential Cyclotron Line Signature in Low Luminosity X-Ray Sources
Robert W. Nelson, John C. L. Wang, E. E. Salpeter +1
Estimates indicate there may be $\simgreat 10^3$ low luminosity X-ray pulsars ($L \simless 10^{34} \rom{erg\;s^{-1}}$) in the Galaxy undergoing ``low-state'' wind accretion in Be/X…