Back to Search
Start Over
Observations of the Ultra-compact X-ray Binary 4U 1543-624 in Outburst with NICER, INTEGRAL, Swift, and ATCA
- Source :
- Ludlam, R M, Shishkovsky, L, Bult, P M, Miller, J M, Zoghbi, A, Strohmayer, T E, Reynolds, M, Natalucci, L, Miller-Jones, J C A, Jaisawal, G K, Guillot, S, Gendreau, K C, García, J A, Fiocchi, M, Fabian, A C, Chakrabarty, D, Cackett, E M, Bahramian, A, Arzoumanian, Z & Altamirano, D 2019, ' Observations of the Ultra-compact X-Ray Binary 4U 1543-624 in Outburst with NICER, INTEGRAL, Swift, and ATCA ', Astrophysical Journal, vol. 883, no. 1, 39 . https://doi.org/10.3847/1538-4357/ab3806, Astrophys.J., Astrophys.J., 2019, 883 (1), pp.39. ⟨10.3847/1538-4357/ab3806⟩
- Publication Year :
- 2019
- Publisher :
- HAL CCSD, 2019.
-
Abstract
- We report on X-ray and radio observations of the ultra-compact X-ray binary 4U 1543-624 taken in August 2017 during an enhanced accretion episode. We obtained NICER monitoring of the source over a $\sim10$ day period during which target-of-opportunity observations were also conducted with Swift, INTEGRAL, and ATCA. Emission lines were measured in the NICER X-ray spectrum at $\sim0.64$ keV and $\sim6.4$ keV that correspond to O and Fe, respectively. By modeling these line components, we are able to track changes in the accretion disk throughout this period. The innermost accretion flow appears to move inwards from hundreds of gravitational radii ($R_{g}=GM/c^{2}$) at the beginning of the outburst to $<br />Comment: 13 pages, 9 figures, 2 tables, accepted for publication in ApJ
- Subjects :
- Accretion
010504 meteorology & atmospheric sciences
Astrophysics::High Energy Astrophysical Phenomena
X-ray binary
Binary number
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Gravitation
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
Emission spectrum
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
0105 earth and related environmental sciences
Line (formation)
Physics
High Energy Astrophysical Phenomena (astro-ph.HE)
Accretion (meteorology)
Plane (geometry)
Astronomy and Astrophysics
neutron [Stars]
Neutron star
13. Climate action
Space and Planetary Science
Accretion disks
Astrophysics::Earth and Planetary Astrophysics
Astrophysics - High Energy Astrophysical Phenomena
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Ludlam, R M, Shishkovsky, L, Bult, P M, Miller, J M, Zoghbi, A, Strohmayer, T E, Reynolds, M, Natalucci, L, Miller-Jones, J C A, Jaisawal, G K, Guillot, S, Gendreau, K C, García, J A, Fiocchi, M, Fabian, A C, Chakrabarty, D, Cackett, E M, Bahramian, A, Arzoumanian, Z & Altamirano, D 2019, ' Observations of the Ultra-compact X-Ray Binary 4U 1543-624 in Outburst with NICER, INTEGRAL, Swift, and ATCA ', Astrophysical Journal, vol. 883, no. 1, 39 . https://doi.org/10.3847/1538-4357/ab3806, Astrophys.J., Astrophys.J., 2019, 883 (1), pp.39. ⟨10.3847/1538-4357/ab3806⟩
- Accession number :
- edsair.doi.dedup.....c169e9cdcaf312ee5b83ad0df9180113