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http://hdl.handle.net/2289/8108Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Ghosh, Tanuman | - |
| dc.contributor.author | Rana, Vikram | - |
| dc.date.accessioned | 2023-06-15T11:02:59Z | - |
| dc.date.available | 2023-06-15T11:02:59Z | - |
| dc.date.issued | 2023-06-07 | - |
| dc.identifier.citation | The Astrophysical Journal, 2023, Vol. 949, Article No.: 78 | en_US |
| dc.identifier.issn | 0004-637X | - |
| dc.identifier.issn | 1538-4357(Online) | - |
| dc.identifier.uri | http://hdl.handle.net/2289/8108 | - |
| dc.description | Open Access | en_US |
| dc.description.abstract | We analyze broadband X-ray data of NGC 6946 X-1 and probe plausible accretion scenarios in this ULX. NGC 6946 X-1 is a persistent soft source with broadband continuum spectra described by two thermal disk components. The cool accretion disk temperature Tcool ∼ 0.2 keV and the presence of a ∼0.9 keV emission/absorption broad feature suggest evidence of an optically thick wind due to supercritical accretion. The hot geometrically modified accretion disk has an inner temperature of Thot ∼ 2 keV with a radially dependent profile T(r) ∝ r−0.5, expected in a slim-disk scenario. Further, the measurement based on a realistic inclination angle of the disk indicates that the mass of the host compact object is comparable to a ∼6–10 M⊙ nonrotating black hole or the system hosts a moderately magnetized neutron star with a B ≲ 2 × 1011 G magnetic field. Overall, the detected spectral curvature, high luminosity, flux contribution from two thermal disk components, and estimated accretion rate support the super-Eddington accretion scenario. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | IOP Publishing Ltd. | en_US |
| dc.relation.uri | https://ui.adsabs.harvard.edu/abs/2023ApJ...949...78G/abstract | en_US |
| dc.relation.uri | https://arxiv.org/abs/2301.09837 | en_US |
| dc.relation.uri | http://dx.doi.org/10.3847/1538-4357/acccf4 | en_US |
| dc.relation.uri | https://inspirehep.net/literature/2626143 | en_US |
| dc.rights | 2023 The Author(s) | en_US |
| dc.title | Constraint on the Accretion of NGC 6946 X-1 Using Broadband X-Ray Data | en_US |
| dc.type | Article | en_US |
| Appears in Collections: | Research Papers (A&A) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2023_ApJ_949_78.pdf Restricted Access | Open Access | 531.31 kB | Adobe PDF | View/Open Request a copy |
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