Investigating the Ultra-Compact X-ray Binary Candidate SLX 1735-269 with NICER and NuSTAR
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_ | 1866929368891129856 |
|---|---|
| author | Moutard, David Ludlam, Renee Sudha, Malu Buisson, Douglas Cackett, Edward Degenaar, Nathalie Fabian, Andrew Gandhi, Poshak Garcia, Javier Shaw, Aarran Tomsick, John |
| author_facet | Moutard, David Ludlam, Renee Sudha, Malu Buisson, Douglas Cackett, Edward Degenaar, Nathalie Fabian, Andrew Gandhi, Poshak Garcia, Javier Shaw, Aarran Tomsick, John |
| contents | We present two simultaneous NICER and NuSTAR observations of the ultra-compact X-ray binary (UCXB) candidate SLX 1735-269 while the source was in two different spectral states. Using various reflection modeling techniques, we find that xillverCO, a model used for fitting X-ray spectra of UCXBs with high carbon and oxygen abundances is an improvement over relxill or relxillns, which instead contains solar-like chemical abundances. This provides indirect evidence in support of the source being ultra-compact. We also use this reflection model to get a preliminary measurement of the inclination of the system, $i = 57^{+23}_{-7}$ degrees. This is consistent with our timing analysis, where a lack of eclipses indicates an inclination of $i<80^{\circ}$. The timing analysis is otherwise inconclusive, and we can not confidently measure the orbital period of the system. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_12371 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Investigating the Ultra-Compact X-ray Binary Candidate SLX 1735-269 with NICER and NuSTAR Moutard, David Ludlam, Renee Sudha, Malu Buisson, Douglas Cackett, Edward Degenaar, Nathalie Fabian, Andrew Gandhi, Poshak Garcia, Javier Shaw, Aarran Tomsick, John High Energy Astrophysical Phenomena We present two simultaneous NICER and NuSTAR observations of the ultra-compact X-ray binary (UCXB) candidate SLX 1735-269 while the source was in two different spectral states. Using various reflection modeling techniques, we find that xillverCO, a model used for fitting X-ray spectra of UCXBs with high carbon and oxygen abundances is an improvement over relxill or relxillns, which instead contains solar-like chemical abundances. This provides indirect evidence in support of the source being ultra-compact. We also use this reflection model to get a preliminary measurement of the inclination of the system, $i = 57^{+23}_{-7}$ degrees. This is consistent with our timing analysis, where a lack of eclipses indicates an inclination of $i<80^{\circ}$. The timing analysis is otherwise inconclusive, and we can not confidently measure the orbital period of the system. |
| title | Investigating the Ultra-Compact X-ray Binary Candidate SLX 1735-269 with NICER and NuSTAR |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2401.12371 |