scholarly journals Pulsar Emission Beams and Profiles in an Inverse-Compton Scattering Model

1992 ◽  
Vol 128 ◽  
pp. 238-241 ◽  
Author(s):  
G. J. Qiao
Keyword(s):  
Compton Scattering ◽  
Hollow Cone ◽  
Polar Cap ◽  
Pulsar Emission ◽  
Scattering Model ◽  
Inverse Compton Scattering ◽  
The Core ◽  
Inverse Compton ◽  
Core Components ◽  
Radio Frequencies

AbstractThe vast majority of pulsar profiles at meter wavelengths are dominated by core components (Rankin 1983, 1990; Lyne and Manchester 1988), but in the usual polar cap models of pulsar emission, it is difficult to get central beam or “core” radiation. In this paper, we present a calculation for both the “core” and hollow “cone” emission beams, as well as model pulse profiles in an inverse-Compton scattering (ICS) model. Both “core” and hollow “cone” emission beams axe obtained naturally in the calculations. Examples of pulse profiles of pulsars at different radio frequencies are presented.The theoretical shapes of the pulse profiles agree very satisfactorily with actual observations, which means that the mechanism suggested here may be the actual one.

scholarly journals The Locations of the Core and Conal Emission Regions in an Inverse-Compton Scattering Model

1992 ◽  
Vol 128 ◽  
pp. 242-244
Author(s):  
G. J. Qiao ◽  
C. G. Li ◽  
M. Li
Keyword(s):  
Compton Scattering ◽  
Radio Pulsars ◽  
Hollow Cone ◽  
Scattering Model ◽  
Inverse Compton Scattering ◽  
Physical Conditions ◽  
The Core ◽  
Inverse Compton

AbstractThe physical conditions and locations of the emission regions for core and hollow cone emissions are very important in understanding the mechanism of radio pulsars. We present two related methods in an Inverse-Compton Scattering (ICS) model in this paper, which give a clear scenario for determining the location of the emission regions and are consistent with the results given by Cordes et al. (1984) and Rankin (1990).

An Inverse Compton Scattering Model of Pulsar Emission. III. Polarization

2000 ◽  
Vol 535 (1) ◽  
pp. 354-364 ◽  
Author(s):  
R. X. Xu ◽  
J. F. Liu ◽  
J. L. Han ◽  
G. J. Qiao
Keyword(s):  
Compton Scattering ◽  
Pulsar Emission ◽  
Scattering Model ◽  
Inverse Compton Scattering ◽  
Inverse Compton

scholarly journals Hollow Core?

2000 ◽  
Vol 177 ◽  
pp. 197-198
Author(s):  
G.J. Qiao ◽  
J.F. Liu ◽  
Yang Wang ◽  
X.J. Wu ◽  
J.L. Han
Keyword(s):  
Compton Scattering ◽  
Impact Angle ◽  
Pencil Beam ◽  
Hollow Core ◽  
Radio Pulsars ◽  
Hollow Cone ◽  
Inverse Compton Scattering ◽  
The Core ◽  
Inverse Compton ◽  
The Impact

AbstractWe carried out the Gaussian fitting to the profile of PSR B1237+25 and found that six components rather than five are necessary to make a good fit. In the central part, we found that the core emission is not filled pencil beam but is a small hollow cone. This implies that the impact angle could beβ< 0.5°. The “hollow core” is in agreement with Inverse Compton Scattering model of radio pulsars.

scholarly journals Quiescent Magnetar Emission: Resonant Compton Upscattering

2004 ◽  
Vol 218 ◽  
pp. 267-270
Author(s):  
Matthew G. Baring
Keyword(s):  
Compton Scattering ◽  
Gamma Ray ◽  
Stellar Surface ◽  
X Rays ◽  
Polar Cap ◽  
Inverse Compton Scattering ◽  
Strong Fields ◽  
Inverse Compton ◽  
Gamma Ray Emission

A principal candidate for quiescent non-thermal gamma-ray emission from magnetars is resonant inverse Compton scattering in the strong fields of their magnetospheres. This paper outlines expectations for such emission, formed from non-thermal electrons accelerated in a pulsar-like polar cap potential upscattering thermal X-rays from the hot stellar surface. The resultant spectra are found to be strikingly flat, with fluxes and strong pulsation that could be detectable by GLAST.

scholarly journals Recent developments of inverse Compton scattering model of pulsar radio emission

2000 ◽  
Vol 177 ◽  
pp. 405-408
Author(s):  
G. J. Qiao ◽  
R. X. Xu ◽  
J. F. Liu ◽  
B. Zhang ◽  
J. L. Han
Keyword(s):  
Compton Scattering ◽  
New Classification ◽  
Pulsar Radio ◽  
Inverse Compton Scattering ◽  
The Core ◽  
Conical Emission ◽  
Inverse Compton ◽  
Recent Developments ◽  
Emission Beam ◽  
Pulsar Radio Emission

AbstractMany theoretical efforts were made to understand the core and conal emission identified from observations by Rankin (1983) and Lyne and Manchester (1988). One of them, named as inverse Compton scattering (ICS) model (Qiao & Lin 1998), has been proposed. It is found in the model that: there are central or ‘core’ emission beam, and one or two hollow conical emission beams; the different emission components are emitted at different heights; owing to different radiation components emitted from different height, the observed emission beams can be shifted from each other due to retardation and aberration effects; the sizes of emission components change with frequencies. Recent developments of the model include: simulations of pulse profiles at different frequencies; studying the basic polarization properties of inverse Compton scattering in strong magnetic fields; computing the polarizations and spectrum of core and cones. A new classification system was also proposed. The main results calculated from the model are consistent with the observations.

scholarly journals A Simulation of Radius-frequency Mapping for PSR J1848-0123 with an Inverse Compton Scattering Model

2021 ◽  
Vol 916 (2) ◽  
pp. 62
Author(s):  
L. H. Shang ◽  
X. Xu ◽  
S. J. Dang ◽  
Q. J. Zhi ◽  
J. T. Bai ◽  
...  
Keyword(s):  
Compton Scattering ◽  
Scattering Model ◽  
Inverse Compton Scattering ◽  
Inverse Compton

scholarly journals Investigating the multifrequency pulse profiles of PSRs B0329+54 and B1642–03 in an inverse Compton scattering model

2017 ◽  
Vol 468 (4) ◽  
pp. 4389-4398 ◽  
Author(s):  
Lun-Hua Shang ◽  
Ji-Guang Lu ◽  
Yuan-Jie Du ◽  
Long-Fei Hao ◽  
Di Li ◽  
...  
Keyword(s):  
Compton Scattering ◽  
Scattering Model ◽  
Inverse Compton Scattering ◽  
Inverse Compton
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