Gravitational lensing and shadow around a non-minimally coupled Horndeski black hole in plasma medium.
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| Title: | Gravitational lensing and shadow around a non-minimally coupled Horndeski black hole in plasma medium. |
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| Authors: | Kala, Shubham1 (AUTHOR) shubhamkala871@gmail.com, Singh, Jaswinder2 (AUTHOR) jaswinderbhu08@gmail.com |
| Source: | European Physical Journal C -- Particles & Fields. Sep2025, Vol. 85 Issue 9, p1-18. 18p. |
| Subjects: | Gravitational lenses, Deflection (Light), Supermassive black holes, Low temperature plasmas, Black holes |
| Abstract: | We investigate the light deflection and the shadow characteristics of a non-minimally coupled Horndeski black hole surrounded by a magnetized, cold, pressureless plasma medium, while considering both homogeneous and non-homogeneous plasma distributions. We consider an analytical expression for the deflection angle of light and analyze how it is influenced by the plasma properties and the Horndeski coupling constant. The circular light orbits, which define the photon sphere, are also analyzed for both types of plasma media, highlighting their impact on the shadow boundary. The shadow properties of the black hole are examined in detail, and constraints on the model parameters are derived by comparing the theoretical shadow radius with observational measurements of Sgr A* and M87* obtained by the Event Horizon Telescope Collaboration. We also study the black hole shadow images along with the corresponding intensity profiles produced by a radially infalling accretion flow in the plasma environment. The results are particularly interesting, as they reveal how the modified black hole geometry affects both the plasma distribution and the black hole parameters in a realistic astrophysical context. [ABSTRACT FROM AUTHOR] |
| Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 188719821 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Gravitational lensing and shadow around a non-minimally coupled Horndeski black hole in plasma medium. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kala%2C+Shubham%22">Kala, Shubham</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> shubhamkala871@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Singh%2C+Jaswinder%22">Singh, Jaswinder</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> jaswinderbhu08@gmail.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. Sep2025, Vol. 85 Issue 9, p1-18. 18p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Gravitational+lenses%22">Gravitational lenses</searchLink><br /><searchLink fieldCode="DE" term="%22Deflection+%28Light%29%22">Deflection (Light)</searchLink><br /><searchLink fieldCode="DE" term="%22Supermassive+black+holes%22">Supermassive black holes</searchLink><br /><searchLink fieldCode="DE" term="%22Low+temperature+plasmas%22">Low temperature plasmas</searchLink><br /><searchLink fieldCode="DE" term="%22Black+holes%22">Black holes</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: We investigate the light deflection and the shadow characteristics of a non-minimally coupled Horndeski black hole surrounded by a magnetized, cold, pressureless plasma medium, while considering both homogeneous and non-homogeneous plasma distributions. We consider an analytical expression for the deflection angle of light and analyze how it is influenced by the plasma properties and the Horndeski coupling constant. The circular light orbits, which define the photon sphere, are also analyzed for both types of plasma media, highlighting their impact on the shadow boundary. The shadow properties of the black hole are examined in detail, and constraints on the model parameters are derived by comparing the theoretical shadow radius with observational measurements of Sgr A* and M87* obtained by the Event Horizon Telescope Collaboration. We also study the black hole shadow images along with the corresponding intensity profiles produced by a radially infalling accretion flow in the plasma environment. The results are particularly interesting, as they reveal how the modified black hole geometry affects both the plasma distribution and the black hole parameters in a realistic astrophysical context. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=188719821 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1140/epjc/s10052-025-14793-8 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 1 Subjects: – SubjectFull: Gravitational lenses Type: general – SubjectFull: Deflection (Light) Type: general – SubjectFull: Supermassive black holes Type: general – SubjectFull: Low temperature plasmas Type: general – SubjectFull: Black holes Type: general Titles: – TitleFull: Gravitational lensing and shadow around a non-minimally coupled Horndeski black hole in plasma medium. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kala, Shubham – PersonEntity: Name: NameFull: Singh, Jaswinder IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 14346044 Numbering: – Type: volume Value: 85 – Type: issue Value: 9 Titles: – TitleFull: European Physical Journal C -- Particles & Fields Type: main |
| ResultId | 1 |
