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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7262
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dc.contributor.authorIslam, Nazma-
dc.contributor.authorGhara, Raghunath-
dc.contributor.authorPaul, Biswajit-
dc.contributor.authorChoudhury, Roy T.-
dc.contributor.authorNath, Biman B.-
dc.date.accessioned2019-08-05T17:57:48Z-
dc.date.available2019-08-05T17:57:48Z-
dc.date.issued2019-08-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2019, Vol. 487, p2785–2796en_US
dc.identifier.issn0035-8711-
dc.identifier.issn1365-2966 - (online)-
dc.identifier.urihttp://hdl.handle.net/2289/7262-
dc.descriptionOpen Accessen_US
dc.description.abstractWe have investigated the long-term average spectral properties of galactic X-ray binaries in the energy range of 3–20 keV, using long-term monitoring data from MAXI–Gas Slit Camera (GSC). These long-term average spectra are used to construct separately the composite spectra of galactic high mass X-ray binaries (HMXBs) and low mass X-ray binaries (LMXBs). These composite spectra can be described empirically with piece-wise power law with three components. X-rays from HMXBs are considered as important contributors to heating and ionization of neutral hydrogen in the intergalactic medium during the Epoch of Reionization. Using the above empirical form of the composite HMXB spectra extrapolated to lower energies as an input, we have studied the impact of these sources on the 21-cm signal using the outputs of N-body simulation and 1D radiative transfer. The heating due to the composite spectrum is less patchy compared to power-law spectrum with a spectral index α = 1.5, used in previous studies. The amplitude of the heating peak of large-scale power spectrum, when plotted as a function of the redshift, is less for the composite spectrum.en_US
dc.language.isoenen_US
dc.publisherOxford University Press on behalf of the Royal Astronomical Societyen_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2019MNRAS.487.2785I/abstracten_US
dc.relation.urihttps://arxiv.org/abs/1905.10386en_US
dc.relation.urihttps://doi.org/10.1093/mnras/stz1446en_US
dc.rights2019 The Author(s)en_US
dc.subjectradiative transferen_US
dc.subjectstars: neutronen_US
dc.subjectintergalactic mediumen_US
dc.subjectdark agesen_US
dc.subjectreionizationen_US
dc.subjectfirst starsen_US
dc.subjectX-rays: binariesen_US
dc.subjectX-rays: galaxiesen_US
dc.titleCosmological implications of the composite spectra of galactic X-ray binaries constructed using MAXI dataen_US
dc.typeArticleen_US
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