Spectral and type I X-ray burst studies of 4U 1702?429 using AstroSat observations
- Title
- Spectral and type I X-ray burst studies of 4U 1702?429 using AstroSat observations
- Creator
- Varun M.; Thomas N.T.; Gudennavar S.B.; Bubbly S.G.
- Description
- 4U 1702?429, an atoll-type neutron star low-mass X-ray binary, was observed twice by the AstroSat/Soft X-ray Telescope (SXT) and Large Area X-ray Proportional Counters (LAXPC-20) on 2018 April 27 and 2019 August 8. Persistent emission spectra of the source were well fitted with the model combination - constant tbabs (thcomp diskbb+powerlaw). The parameters obtained from the spectral analysis revealed the source to be in a hard spectral state during the observations. Time-resolved spectral analyses were performed on the three type I X-ray bursts detected from the source. Burst analysis showed that the source underwent a photospheric radius expansion. Consequently, the radius of the neutron star and distance to the source (with isotropic and anisotropic burst emission) were obtained as 12.65+?008690 km and 6.92+?000916 and 8.43+?001020 kpc, respectively. 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.
- Source
- Monthly Notices of the Royal Astronomical Society, Vol-529, No. 3, pp. 2234-2241.
- Date
- 2024-01-01
- Publisher
- Oxford University Press
- Subject
- accretion, accretion discs; stars: neutron; X-rays: binaries; X-rays: bursts; X-rays: individual: 4U 1702?429
- Coverage
- Varun M., Department of Physics and Electronics, CHRIST University, Karnataka, Bangalore, 560029, India; Thomas N.T., Department of Physics and Electronics, CHRIST University, Karnataka, Bangalore, 560029, India; Gudennavar S.B., Department of Physics and Electronics, CHRIST University, Karnataka, Bangalore, 560029, India; Bubbly S.G., Department of Physics and Electronics, CHRIST University, Karnataka, Bangalore, 560029, India
- Rights
- All Open Access; Gold Open Access
- Relation
- ISSN: 358711; CODEN: MNRAA
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Varun M.; Thomas N.T.; Gudennavar S.B.; Bubbly S.G., “Spectral and type I X-ray burst studies of 4U 1702?429 using AstroSat observations,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 24, 2025, https://archives.christuniversity.in/items/show/13207.