The Statistic Analysis of GeV Spectral Breaks in Bright Gamma-Ray FSRQs
Fuente:
arXiv
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917854578737152 |
|---|---|
| author | Zhu, K. R. Chen, J. M. Zhang, L. |
| author_facet | Zhu, K. R. Chen, J. M. Zhang, L. |
| contents | We present the statistic results of GeV spectral breaks of bright gamma-ray flat-spectrum radio quasars (FSRQs) in the energy range of 0.1-10 GeV based on New Pass 8 date of the Large Area Telescope abroad on Fermi Gamma-ray Space Telescope. We have fitted the 15-year average gamma-ray spectra of 755 FSRQs by using both a broken power-law (BPL) and the Logarithmic Parabolas (LP) models, and obtained 87 bright gamma-ray FSRQs with their integrated photon fluxes greater than $2.16\times 10^{-8}$ cm$^{-2}$ s$^{-1}$. From our results, the FSRQ population shows similar preferences for both the BPL and LP models in gamma-ray spectral fitting and clustering analysis suggests that BPL-preferred and LP-preferred FSRQs belong to the same category. Our results indicate that GeV spectral breaks in bright gamma-ray FSRQs are located at $\rm 2.90\pm1.92$ GeV in the rest frame, and the observed change in photon index is $\rm Δγ=0.45 \pm 0.19$, which is consistent with the expected value for a cooling break of electrons scattering seed photons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_02163 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The Statistic Analysis of GeV Spectral Breaks in Bright Gamma-Ray FSRQs Zhu, K. R. Chen, J. M. Zhang, L. High Energy Astrophysical Phenomena We present the statistic results of GeV spectral breaks of bright gamma-ray flat-spectrum radio quasars (FSRQs) in the energy range of 0.1-10 GeV based on New Pass 8 date of the Large Area Telescope abroad on Fermi Gamma-ray Space Telescope. We have fitted the 15-year average gamma-ray spectra of 755 FSRQs by using both a broken power-law (BPL) and the Logarithmic Parabolas (LP) models, and obtained 87 bright gamma-ray FSRQs with their integrated photon fluxes greater than $2.16\times 10^{-8}$ cm$^{-2}$ s$^{-1}$. From our results, the FSRQ population shows similar preferences for both the BPL and LP models in gamma-ray spectral fitting and clustering analysis suggests that BPL-preferred and LP-preferred FSRQs belong to the same category. Our results indicate that GeV spectral breaks in bright gamma-ray FSRQs are located at $\rm 2.90\pm1.92$ GeV in the rest frame, and the observed change in photon index is $\rm Δγ=0.45 \pm 0.19$, which is consistent with the expected value for a cooling break of electrons scattering seed photons. |
| title | The Statistic Analysis of GeV Spectral Breaks in Bright Gamma-Ray FSRQs |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2412.02163 |