Evolution of QPOs in GX 339–4 and EXO 1846–031 with Insight-HXMT and NICER
Abstract We conduct a spectral and timing analysis of GX 339−4 and EXO 1846−031 with the aim of studying the evolution of type-C quasiperiodic oscillations (QPOs) with spectral parameters. The high-cadence data from Insight-HXMT and NICER allow us to track the evolution of QPOs and spectra simultaneously. Type-C QPOs appear at the end of the low–hard state and/or the hard–intermediate state. Our results reveal that the QPO frequency is closely related to the inner disk radius and mass accretion rate in the two sources. This correlation aligns well with the dynamic frequency model of a truncated disk.
Authors
- Ranjeev Misra (ORCID: https://orcid.org/0000-0002-7609-2779)
- Shuang‐Nan Zhang (ORCID: https://orcid.org/0000-0001-5586-1017)
- Cosimo Bambi (ORCID: https://orcid.org/0000-0002-3180-9502)
- Divya Rawat (ORCID: https://orcid.org/0000-0002-9280-2785)
- Honghui Liu (ORCID: https://orcid.org/0000-0003-2845-1009)
- Long Ji (ORCID: https://orcid.org/0000-0001-9599-7285)
- Pengju Wang (ORCID: https://orcid.org/0009-0001-6193-0258)
- Zuobin Zhang (ORCID: https://orcid.org/0000-0003-0847-1299)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Sun Yat-sen University (CN)
- Chinese Academy of Sciences (CN)
- Fudan University (CN)
- Observatoire astronomique de Strasbourg (FR)
- Institute of High Energy Physics (CN)
- University of Chinese Academy of Sciences (CN)
- New Uzbekistan University (UZ)
- National University of Uzbekistan (UZ)
- Inter-University Centre for Astronomy and Astrophysics (IN)
- Université de Strasbourg (FR)
Publication Details
- Journal
- The Astrophysical Journal
- Published
- 2024-08-01
- DOI
- https://doi.org/10.3847/1538-4357/ad5a00
- Citations
- 4
- Primary Topic
- Astrophysical Phenomena and Observations
- Type
- article
- Field-Weighted Citation Impact
- 1.33
Funders
- Natural Science Foundation of Shanghai
- National Natural Science Foundation of China
- Shanghai Municipal Education Commission