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http://hdl.handle.net/2289/8041Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Sharma, Rahul | - |
| dc.contributor.author | Sanna, Andrea | - |
| dc.contributor.author | Beri, Aru | - |
| dc.date.accessioned | 2023-02-10T07:41:50Z | - |
| dc.date.available | 2023-02-10T07:41:50Z | - |
| dc.date.issued | 2023-03-01 | - |
| dc.identifier.citation | Monthly Notices of the Royal Astronomical Society, 2023, Vol. 519, p3811 | en_US |
| dc.identifier.issn | 0035-8711 | - |
| dc.identifier.issn | 1365-2966 (Online) | - |
| dc.identifier.uri | http://hdl.handle.net/2289/8041 | - |
| dc.description | Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations) | en_US |
| dc.description.abstract | We report on the analysis of the AstroSat data set of the accreting millisecond X-ray pulsar SAX J1808.4–3658, obtained during its 2019 outburst. We found coherent pulsations at ∼401 Hz and an orbital solution consistent with previous studies. The 3–20 keV pulse profile can be well fitted with three harmonically related sinusoidal components with background-corrected fractional amplitudes of ∼3.5 per cent, ∼1.2 per cent and ∼0.37 per cent for the fundamental, second and third harmonics, respectively. Our energy-resolved pulse profile evolution study indicates a strong energy dependence. We also observed a soft lag in the fundamental and hard lags during its harmonic. The broad-band spectrum of SAX J1808.4–3658 can be described well using a combination of the thermal emission component with kT ∼ 1 keV, a thermal Comptonization (Γ ∼ 1.67) from the hot corona and broad emission lines due to Fe. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Oxford University Press | en_US |
| dc.relation.uri | https://ui.adsabs.harvard.edu/abs/2023MNRAS.519.3811S/abstract | en_US |
| dc.relation.uri | https://arxiv.org/abs/2212.10088 | en_US |
| dc.relation.uri | https://doi.org/10.1093/mnras/stac3779 | en_US |
| dc.relation.uri | https://inspirehep.net/literature/2616477 | en_US |
| dc.rights | 2022 The Author(s) | en_US |
| dc.subject | accretion | en_US |
| dc.subject | accretion disks | en_US |
| dc.subject | stars: neutron | en_US |
| dc.subject | x-ray: binaries | en_US |
| dc.subject | SAX J1808.4–3658 | en_US |
| dc.title | AstroSat observation of the accreting millisecond X-ray pulsar SAX J1808.4–3658 during its 2019 outburst | en_US |
| dc.type | Article | en_US |
| Appears in Collections: | Research Papers (A&A) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2023_MNRAS_Vol.519_p3811.pdf Restricted Access | Restricted Access | 1.41 MB | Adobe PDF | View/Open Request a copy |
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