Inverse Compton Scattering in strong Magnetic Field: a Possible Mechanism for Hard x-Ray production from Accreting Neutron stars
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Date
2007-07
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Addis Ababa University
Abstract
We began by considering Dirac equation to derive the inverse compton scattering
cross section in strong magnetic field and this cross section has simple form for the
scattering of a low frequency photon with relativistic electron.
We also derived the spectrum function from this cross section,which has a direct
application on the hardening of thermal photons(soft x-rays)through inverse compton
scattering by relativistic electron beams on the surface of strongly magnetized neutron
stars to get the highest scattered photon energy of magnitude:
!f = 4
2!i
for the incident photon angle i = and scattered photon angle f = 0 which
can give hard x-ray spectrum in the energy range of 12KeV-50MeV by considering
soft X-ray as incident photon and to get this spectrum the electron energy
for
pulsars(rotating Neutron stars)is considered as well. And we showed the application
of Inverse compton scattering in X-ray Astronomy during Roche Lobe overflow and
formation of Accretion disc in the compact object in our case(Strongly magnetized
Neutron stars)
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A Possible Mechanism for Hard x-Ray production