Back to Search
Start Over
Timing properties of the X-ray accreting pulsar 1A 0535+262 studied with Insight-HXMT
- Publication Year :
- 2022
- Publisher :
- arXiv, 2022.
-
Abstract
- 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 subcritical-luminosity to the supercritical-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 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 × 1037 to 1.0 × 1038 erg s−1. The observed structure is luminosity dependent and appears around the source critical luminosity (∼6.7 × 1037 erg s−1).
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....7c983a30e482662b5eeab8bff12897d5
- Full Text :
- https://doi.org/10.48550/arxiv.2208.13340