Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...284..161s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 284, no. 1, p. 161-173
Astronomy and Astrophysics
Astrophysics
16
Pulse Modulation, Pulses, Scattering, Stellar Atmospheres, X Ray Spectra, Energy Distribution, Stellar Models
Scientific paper
We propose that radiation-supported scattering atmospheres near accreting X-ray pulsars (XRPs) can explain energy-dependent features observed in the pulse profiles of 4U 1626-67, 4U 1538-52, 4U 1907+09 and Vela X-1. These atmospheres provide a physical model for the phenomenological annular emitting regions employed by Leahy to fit X-ray pulsar pulse profiles. We examine the effects of the scattering atmospheres under the assumptions that stable, optically thick atmospheres exist in a region where the optically thin resonant radiation force exceeds the force of gravity on ionized hydrogen. We predict that less complex pulse profiles will be observed at higher photon energies because the scattering atmospheres, which are supported by resonant Compton radiation pressure, become transparent to photons with energies greater than the cyclotron energy at the neutron star surface.
Dermer Charles D.
Sturner Steven J.
No associations
LandOfFree
Energy-dependent effects of scattering atmospheres on X-ray pulsar pulse profiles does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Energy-dependent effects of scattering atmospheres on X-ray pulsar pulse profiles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy-dependent effects of scattering atmospheres on X-ray pulsar pulse profiles will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1254094