Shadows of Sgr A$$^{*}$$ ∗ black hole surrounded by superfluid dark matter halo
Abstract In this paper we construct a black hole solution surrounded by superfluid dark matter and baryonic matter, and study their effects on the shadow images of the Sgr A$$^{*}$$ ∗ black hole. To achieve this goal, we have considered two density profiles for the baryonic matter described by the s...
| Հիմնական հեղինակներ: | , , |
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| Ձևաչափ: | Հոդված |
| Լեզու: | English |
| Հրապարակվել է: |
SpringerOpen
2020-05-01
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| Շարք: | European Physical Journal C: Particles and Fields |
| Առցանց հասանելիություն: | http://link.springer.com/article/10.1140/epjc/s10052-020-7899-5 |
| _version_ | 1828872116827586560 |
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| author | Kimet Jusufi Mubasher Jamil Tao Zhu |
| author_facet | Kimet Jusufi Mubasher Jamil Tao Zhu |
| author_sort | Kimet Jusufi |
| collection | DOAJ |
| description | Abstract In this paper we construct a black hole solution surrounded by superfluid dark matter and baryonic matter, and study their effects on the shadow images of the Sgr A$$^{*}$$ ∗ black hole. To achieve this goal, we have considered two density profiles for the baryonic matter described by the spherical exponential profile and the power law profile including a special case describing a totally dominated dark matter galaxy. Using the present values for the parameters of the superfluid dark matter and baryonic density profiles for the Sgr A$$^{*}$$ ∗ black hole, we find that the effects of the superfluid dark matter and baryonic matter on the size of shadows are almost negligible compared to the Kerr vacuum black hole. In addition, we find that by increasing the baryonic mass the shadow size increases considerably. This result can be linked to the matter distribution in the galaxy, namely the baryonic matter is mostly located in the galactic center and, therefore, increasing the baryonic matter can affect the size of black hole shadow compared to the totally dominated dark matter galaxy where we observe an increase of the angular diameter of the Sgr A$$^{*}$$ ∗ black hole of the magnitude $$10^{-5}\,\upmu $$ 10-5μ arcsec. |
| first_indexed | 2024-12-13T06:47:09Z |
| format | Article |
| id | doaj.art-1909fbcc46944fdcb24533f9a364984f |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-13T06:47:09Z |
| publishDate | 2020-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-1909fbcc46944fdcb24533f9a364984f2022-12-21T23:56:14ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-05-0180511310.1140/epjc/s10052-020-7899-5Shadows of Sgr A$$^{*}$$ ∗ black hole surrounded by superfluid dark matter haloKimet Jusufi0Mubasher Jamil1Tao Zhu2Physics Department, State University of TetovoInstitute for Theoretical Physics and Cosmology, Zhejiang University of TechnologyInstitute for Theoretical Physics and Cosmology, Zhejiang University of TechnologyAbstract In this paper we construct a black hole solution surrounded by superfluid dark matter and baryonic matter, and study their effects on the shadow images of the Sgr A$$^{*}$$ ∗ black hole. To achieve this goal, we have considered two density profiles for the baryonic matter described by the spherical exponential profile and the power law profile including a special case describing a totally dominated dark matter galaxy. Using the present values for the parameters of the superfluid dark matter and baryonic density profiles for the Sgr A$$^{*}$$ ∗ black hole, we find that the effects of the superfluid dark matter and baryonic matter on the size of shadows are almost negligible compared to the Kerr vacuum black hole. In addition, we find that by increasing the baryonic mass the shadow size increases considerably. This result can be linked to the matter distribution in the galaxy, namely the baryonic matter is mostly located in the galactic center and, therefore, increasing the baryonic matter can affect the size of black hole shadow compared to the totally dominated dark matter galaxy where we observe an increase of the angular diameter of the Sgr A$$^{*}$$ ∗ black hole of the magnitude $$10^{-5}\,\upmu $$ 10-5μ arcsec.http://link.springer.com/article/10.1140/epjc/s10052-020-7899-5 |
| spellingShingle | Kimet Jusufi Mubasher Jamil Tao Zhu Shadows of Sgr A$$^{*}$$ ∗ black hole surrounded by superfluid dark matter halo European Physical Journal C: Particles and Fields |
| title | Shadows of Sgr A$$^{*}$$ ∗ black hole surrounded by superfluid dark matter halo |
| title_full | Shadows of Sgr A$$^{*}$$ ∗ black hole surrounded by superfluid dark matter halo |
| title_fullStr | Shadows of Sgr A$$^{*}$$ ∗ black hole surrounded by superfluid dark matter halo |
| title_full_unstemmed | Shadows of Sgr A$$^{*}$$ ∗ black hole surrounded by superfluid dark matter halo |
| title_short | Shadows of Sgr A$$^{*}$$ ∗ black hole surrounded by superfluid dark matter halo |
| title_sort | shadows of sgr a ∗ black hole surrounded by superfluid dark matter halo |
| url | http://link.springer.com/article/10.1140/epjc/s10052-020-7899-5 |
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