Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Spectral characteristics of the black hole binary 4U 1957+115: a multi mission perspective Subject The topic of the resource accretion; accretion discs; black hole physics - X-rays: low mass X-ray binaries; X-rays: individual: 4U 1957+115 Description An account of the resource We report spectral analysis of the persistent black hole X-ray binary, 4U 1957+115, using AstroSat, Swift, and NuSTAR observations carried out between 2016 and 2019. Modelling with a disc emission, thermal Comptonization, and blurred reflection components revealed that the source was in the high-soft state with the disc flux ?87 per cent of the total and high-energy photon index ?2.6. There is an evidence that either the inner disc radius varied by ?25 per cent or the colour hardening factor changed by ?12 per cent. The values of the inner disc radius imply that for a non-spinning black hole, the black hole mass is &lt; 7 M ? and the source is located &gt; 30 kpc away. On the other hand, a rapidly spinning black hole would be consistent with the more plausible black hole mass of &lt; 10 M ? and a source distance of ?10 kpc. Fixing the distance to 10 kpc and using a relativistic accretion disc model, constrained the black hole mass to 6 M? and inclination angle to 72. A positive correlation is detected between the accretion rate and inner radii or equivalently between the accretion rate and colour factor. 2022 The Author(s). Creator An entity primarily responsible for making the resource Mudambi S.P.; Gudennavar S.B.; Misra R.; Bubbly S.G. Source A related resource from which the described resource is derived Monthly Notices of the Royal Astronomical Society, Vol-517, No. 3, pp. 4489-4496. Publisher An entity responsible for making the resource available Oxford University Press Date A point or period of time associated with an event in the lifecycle of the resource 2022-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1093/mnras/stac2952" target="_blank" rel="noreferrer noopener">https://doi.org/10.1093/mnras/stac2952</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145263083&amp;doi=10.1093%2Fmnras%2Fstac2952&amp;partnerID=40&amp;md5=3ca8d4d72d0e7b16667c03ac66c78df9" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145263083&amp;doi=10.1093%2fmnras%2fstac2952&amp;partnerID=40&amp;md5=3ca8d4d72d0e7b16667c03ac66c78df9</a> Rights Information about rights held in and over the resource All Open Access; Green Open Access Relation A related resource ISSN: 358711; CODEN: MNRAA Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Mudambi S.P., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Bengaluru, 560029, India; Gudennavar S.B., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Bengaluru, 560029, India; Misra R., Inter-University Centre for Astronomy and Astrophysics, Ganeshkhind, Pune, 411007, India; Bubbly S.G., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Bengaluru, 560029, India