Matches in SemOpenAlex for { <https://semopenalex.org/work/W2912670161> ?p ?o ?g. }
- W2912670161 endingPage "99" @default.
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- W2912670161 abstract "Atoll sources are accreting neutron star (NS) low-mass X-ray binaries. We present a spectral analysis of four persistent atoll sources (GX 3+1, 4U 1702−429, 4U 0614+091, and 4U 1746−371) observed for ∼20 ks each with NuSTAR to determine the extent of the inner accretion disk. These sources range from an apparent luminosity of 0.006–0.11 of the Eddington limit (assuming the empirical limit of 3.8 × 1038 erg s−1). Broad Fe emission features shaped by Doppler and relativistic effects close to the NS were firmly detected in three of these sources. The position of the disk appears to be close to the innermost stable circular orbit (ISCO) in each case. For GX 3+1, we determine (90% confidence level) and an inclination of 27°–31°. For 4U 1702−429, we find a and inclination of 53°–64°. For 4U 0614+091, the disk has a position of and inclination of 50°–62°. If the disk does not extend to the innermost stable circular orbit, we can place conservative limits on the magnetic field strength in these systems in the event that the disk is truncated at the Alfvén radius. This provides the limit at the poles of B ≤ 6.7 × 108 G, 3.3 × 108 G, and 14.5 × 108 G for GX 3+1, 4U 1702−429, and 4U 0614+091, respectively. For 4U 1746−371, we argue that the most plausible explanation for the lack of reflection features is a combination of source geometry and strong Comptonization. We place these sources among the larger sample of NSs that have been observed with NuSTAR." @default.
- W2912670161 created "2019-02-21" @default.
- W2912670161 creator A5012229831 @default.
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- W2912670161 creator A5025169326 @default.
- W2912670161 creator A5029170999 @default.
- W2912670161 creator A5036973720 @default.
- W2912670161 creator A5060928900 @default.
- W2912670161 creator A5081363267 @default.
- W2912670161 creator A5081713242 @default.
- W2912670161 creator A5082652920 @default.
- W2912670161 date "2019-03-07" @default.
- W2912670161 modified "2023-10-12" @default.
- W2912670161 title "<i>NuSTAR</i>Observations of the Accreting Atolls GX 3+1, 4U 1702-429, 4U 0614+091, and 4U 1746-371" @default.
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