| Autor: |
Wang, P. J., Kong, L. D., Zhang, S., Doroshenko, V., Santangelo, A., Ji, L., Yorgancioglu, E. S., Chen, Y. P., Zhang, S. N., Qu, J. L., Ge, M. Y., Li, J., Chang, Z., Tao, L., Peng, J. Q., Shui, Q. C. |
| Rok vydání: |
2022 |
| Předmět: |
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| Druh dokumentu: |
Working Paper |
| DOI: |
10.3847/1538-4357/ac8230 |
| Popis: |
We report results on the timing analysis of the 2020 giant outburst of 1A 0535+262, using broadband data from Insight-HXMT. The analysis of the pulse profile evolution from the sub-critical luminosity to super-critical luminosity regime is presented for the first time. We found that the observed pulse profile exhibits a complex dependence on both energy and luminosity.A dip structure at the energy of the cyclotron resonant scattering features (CRSFs) is found for the first time in the pulse fraction-energy relation of 1A 0535+262, when the outburst evolves in a luminosity range from 4.8 $\times 10^{37}$ erg s$^{-1}$ to 1.0 $\times 10^{38}$ erg s$^{-1}$. The observed structure is luminosity dependent and appears around the source critical luminosity ($\sim$ 6.7 $\times 10^{37}$ erg s$^{-1}$). |
| Databáze: |
arXiv |
| Externí odkaz: |
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