On the Spectral Shape of Non-recycled γ-ray Pulsars
More than 100 γ−ray pulsars have been discovered by the Fermi Gamma-ray Space Telescope. With a significantly enlarged sample size, it is possible to compare the properties of different classes. Radio-quiet (RQ) γ−ray pulsars form a distinct population, and various studies have shown that the prop...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
The Korean Space Science Society
2016-06-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2016/v33n2/OJOOBS_2016_v33n2_101.pdf |
| Summary: | More than 100 γ−ray pulsars have been discovered by the Fermi Gamma-ray Space Telescope. With a significantly enlarged
sample size, it is possible to compare the properties of different classes. Radio-quiet (RQ) γ−ray pulsars form a distinct
population, and various studies have shown that the properties of the RQ population can be intrinsically different from
those of radio-loud (RL) pulsars. Utilizing these differences, it is possible to further classify the pulsar-like unidentified
γ−ray sources into sub-groups. In this study, we suggest the possibility of distinguishing RQ/RL pulsars by their spectral
shape. We compute the probabilities of a pulsar to be RQ or RL for a given spectral curvature. This can provide a key to the
estimation of the intrinsic fraction of radio-quietness in the γ−ray pulsar population, which can place a tight constraint on
the emission geometry. |
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| ISSN: | 2093-5587 2093-1409 |