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http://hdl.handle.net/2289/6130Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Islam, Nazma | - |
| dc.contributor.author | Maitra, Chandreyee | - |
| dc.contributor.author | Pradhan, Pragati | - |
| dc.contributor.author | Paul, Biswajit | - |
| dc.date.accessioned | 2015-01-05T18:21:24Z | - |
| dc.date.available | 2015-01-05T18:21:24Z | - |
| dc.date.issued | 2015-02-04 | - |
| dc.identifier.citation | Monthly Notices of the Royal Astronomical Society, 2015, Vol. 446, p4148-4154 | en |
| dc.identifier.issn | 0035-8711 | - |
| dc.identifier.issn | 1365-2966 - (online) | - |
| dc.identifier.uri | http://hdl.handle.net/2289/6130 | - |
| dc.description | Open Access. | en |
| dc.description.abstract | The pulsar IGR J16393–4643 belongs to a class of highly absorbed supergiant high-mass X-ray binaries (HMXBs), characterized by a very high column density of absorbing matter. We present the results of simultaneous broad-band pulsation and spectrum analysis from a 44-ks Suzaku observation of the source. The orbital intensity profile created with the Swift Burst Alert Telescope (Swift–BAT) light curve shows an indication of IGR J16393–4643 being an eclipsing system with a short eclipse semi-angle θE ∼ 17°. For a supergiant companion star with a 20-R⊙ radius, this implies an inclination of the orbital plane in the range 39°–57°, whereas for a main-sequence B star as the companion with a 10-R⊙ radius, the inclination of the orbital plane is in the range 60°–77°. Pulse profiles created for different energy bands have complex morphology, which shows some energy dependence and increases in pulse fraction with energy. We have also investigated broad-band spectral characteristics, phase-averaged spectra and resolving the pulse phase into peak and trough phases. The phase-averaged spectrum has a very high NH(∼ 3 × 1023 cm−2) and is described by a power law (Γ ∼ 0.9) with a high-energy cut-off above 20 keV. We find a change in the spectral index in the peak and trough phases, implying an underlying change in the source spectrum. | en |
| dc.language.iso | en | en |
| dc.publisher | Oxford University Press for The Royal Astronomical Society | en |
| dc.relation.uri | http://adsabs.harvard.edu/abs/2015MNRAS.446.4148I | en |
| dc.relation.uri | http://arxiv.org/abs/1411.3108 | en |
| dc.relation.uri | http://dx.doi.org/10.1093/mnras/stu2395 | en |
| dc.rights | 2015 The authors & the Royal Astronomical Society | en |
| dc.subject | Neutron stars | en |
| dc.subject | X-ray binaries | en |
| dc.subject | X-ray:stars | en |
| dc.title | A Suzaku view of IGR J16393-4643 | en |
| dc.type | Article | en |
| Appears in Collections: | Research Papers (A&A) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2015_MNRAS_446_4148.pdf | Open Access | 758.58 kB | Adobe PDF | View/Open |
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