NuSTAR and NICER reveal IGR J17591-2342 as a new accreting millisecond X-ray pulsar
| العنوان: | NuSTAR and NICER reveal IGR J17591-2342 as a new accreting millisecond X-ray pulsar |
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| المؤلفون: | A. Marino, Paul S. Ray, Keith C. Gendreau, Deepto Chakrabarty, L. Ducci, R. Iaria, Peter Bult, Alessandro Papitto, Teruaki Enoto, Gaurava K. Jaisawal, Sebastien Guillot, Zaven Arzoumanian, C. B. Markwardt, Carlo Ferrigno, Tod E. Strohmayer, Luciano Burderi, A. Riggio, Diego Altamirano, A. Sanna, Michael T. Wolff, T. Di Salvo, Angelo Gambino, Slavko Bogdanov, Enrico Bozzo |
| المساهمون: | Sanna, A., Ferrigno, C., Ray, P.S., Ducci, L., Jaisawal, G.K., Enoto, T., Bozzo, E., Altamirano, D., Di Salvo, T., Strohmayer, T.E., Papitto, A., Riggio, A., Burderi, L., Bult, P.M., Bogdanov, S., Gambino, A.F., Marino, A., Iaria, R., Arzoumanian, Z., Chakrabarty, D., Gendreau, K.C., Guillot, S., Markwardt, C., Wolff, M.T., Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre National d'Études Spatiales [Toulouse] (CNES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Massachusetts Institute of Technology. Department of Physics, Chakrabarty, Deepto |
| المصدر: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 617, pp.L8. ⟨10.1051/0004-6361/201834160⟩ Astron.Astrophys. Astron.Astrophys., 2018, 617, pp.L8. ⟨10.1051/0004-6361/201834160⟩ Sanna, A, Ferrigno, C, Ray, P S, Ducci, L, Jaisawal, G K, Enoto, T, Bozzo, E, Altamirano, D, Di Salvo, T, Strohmayer, T E, Papitto, A, Riggio, A, Burderi, L, Bult, P M, Bogdanov, S, Gambino, A F, Marino, A, Iaria, R, Arzoumanian, Z, Chakrabarty, D, Gendreau, K C, Guillot, S, Markwardt, C & Wolff, M T 2018, ' NuSTAR and NICER reveal IGR J17591-2342 as a new accreting millisecond X-ray pulsar ', Astronomy and Astrophysics, vol. 617, L8 . https://doi.org/10.1051/0004-6361/201834160Test arXiv |
| بيانات النشر: | EDP Sciences, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Accretion, Astrophysics::High Energy Astrophysical Phenomena, general [Pulsars], FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Spectral line, law.invention, Telescope, X-rays: binaries, Settore FIS/05 - Astronomia E Astrofisica, Pulsar, low-mass [Stars], law, stars: low-mass, 0103 physical sciences, Stars: low-ma, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Neutron Star Interior Composition Explorer, 010308 nuclear & particles physics, Computer Science::Information Retrieval, accretion disks, neutron [Stars], Astronomy and Astrophysics, Astronomy and Astrophysic, Orbital period, Light curve, X-rays: binarie, Stars: neutron, Neutron star, Pulsars: general, Accretion disk, Space and Planetary Science, Accretion disks, binaries [X-rays], Astrophysics::Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], X-ray pulsar |
| الوصف: | We report the discovery by the Nuclear Spectroscopic Telescope Array (NuSTAR) and the Neutron Star Interior Composition Explorer (NICER) of the accreting millisecond X-ray pulsar IGR J17591-2342. Coherent X-ray pulsations around 527.4 Hz (1.9 ms) with a clear Doppler modulation were detected. This implies an orbital period of ∼8.8 h and a projected semi-major axis of ∼1.23 lt-s. With the binary mass function, we estimate a minimum companion mass of 0.42 M, obtained assuming a neutron star mass of 1.4[subscript ⊙] and an inclination angle lower than 60°, as suggested by the absence of eclipses or dips in the light curve of the source. The broad-band energy spectrum, obtained by combining NuSTAR, swift and INTEGRAL observations, is dominated by Comptonisation of soft thermal seed photons with a temperature of ∼0.7 keV by electrons heated to 21 keV. We also detect black-body-like thermal direct emission that is compatible with an emission region of a few kilometers and a temperature compatible with the seed source of Comptonisation. A weak Gaussian line centred on the iron Kα complex can be interpreted as a signature of disc reflection. A similar spectrum characterises the NICER spectra, which was measured when the outburst faded. Key words: accretion, accretion disks / stars: low-mass / pulsars: general / stars: neutron / X-rays: binaries United States. National Aeronautics and Space Administration |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0004-6361 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f97a05732b5ef2cb79694f1f7f6f275Test http://hdl.handle.net/10447/338139Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....9f97a05732b5ef2cb79694f1f7f6f275 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00046361 |
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